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Updates found with 'automatic continuous curing'

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Updates found with 'automatic continuous curing'

Platinum Cured Silicone Tubing For critical pharmaceutical, biomedical, cosmetic, and food applications Being manufactured in our Platinum cured silicone gives you a number of advantages over conventional Peroxide cured silicones. We propose a wide range of Platinum Silicone Tubing for pharmaceutical and biotech companies. Platinum Cured silicone tubing offers many benefits over traditional peroxide cured tubing. Platinum Tubing offers extremely high purity and very low leaching of bi-products. Due to the platinum catalyst curing system the crosslink density of the silicone polymer is altered which in turn offers enhanced physical properties along with ultra-smooth surfaces, particularly useful in the bioprocess industry sector where reduced bacterial growth is an added benefit. Platinum addition silicone tubing contains no phthalate plasticizers associated with other types of tubing and is manufactured totally free from animal derived components. Our range of silicone tubing is biocompatible to the ISO 10993 standard and meets fully USP Class VI, FDA and European Pharmacopoeia criteria. Peroxide Cured Tube:- Initially popular as a low cost alternative to platinum cured tube, the use of peroxide tubing in biopharmaceutical industry has largely been phased out due to the presence of toxic by-products formed during the curing process of this material. Typical by -products found in peroxide (2,4-dichlorobenzoyl peroxide) cured tube include: - 2,4-dichlorobenzoic acid dichlorobenzoic acid - dichlorobenzoic acid methyl ester dichlorobenzoyl chloride - dichlorobenzaldehyde trichlorobenzene - chlorinated aliphatics polychlorinated biphenyls (PCBs) - phenol, benzyl alcohol - dichlorobenzene, dichlorophenol Washing of peroxide cured tube with pure water (WFI) to remove these contaminants is largely ineffective as these and other by products continually leach from the silicone rubber matrix, concentrating at the tube surfaces, a process that is exacerbated by autoclaving. Platinum Cured Tube:- Platinum-catalysed addition curing is a faster process than peroxide curing which involves just one controlled reaction and which produces no undesirable by-products. For this reason platinum cured silicone tube is now the tube of choice for biopharmaceutical applications. Care should however still be taken in the selection of your source of platinum tube, as only tube that has been manufactured in a completely dedicated Production facility using dedicated extrusion equipment and curing ovens etc, will be completely free of the peroxide decomposition derivatives from the peroxide curing process. Features:- · Excellent biocompatibility; no leachable additives, DOP, or plasticizers; odorless and nontoxic, fungus resistant. · No taste imparted to transported fluids. Resistant to oxidation, corona, ozone and radiation Does not support bacterial growth Withstands repeated sterilization Non-reactive to body tissue and fluid Non-adherence tissue Retains physical properties in extreme conditions Non Toxic Non Yellowing No peroxide by-products High tear strength as standard High gloss finish Excellent quality Highly hydrophobic Extended life in Peristaltic pumps · Extremely good at low temperatures. Limitations:- · Do not use with concentrated solvents, oils, or acids. · Relatively high gas permeability. · Physical Characteristics and Composition: · Thermal set rubber. · Siloxane polymers and amorphous silica. · Excellent compression strength. · Soft material. · Translucent, clear to light amber. Temperature Range:- -60 to 460°F (-51 to 232°C) Classifications & Certifications:- · DMF No-29761 from US FDA · FDA 21 CFR 177.2600 · USP Class VI · German BFR xv · TSE/BSE · RoHS · France Arrete du 25 · ISO 10993 Cleaning/Sterilization:- · Clean with hot water/soap solution. · Use nonoily soap such as IVORY. · Do not use synthetic detergents or oil-based soaps as they may be absorbed by the tubing and subsequently leach out into the fluid. · Rinse thoroughly with distilled water. · By Sterilization method · Ethylene oxide (ETO) sterilization is not recommended. Sufficient data are not available regarding complete outgassing of residual ETO and ETO byproducts.
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Silicone tubing has made significant strides in the medical device market over the last five years. From surgical instrumentation to implantable drug-delivery systems, silicone tubing is methodically replacing tubing made from more-traditional plastics and thermoplastics such as polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), and nonplastics such as urethanes. Medical device designers are drawn to silicone tubing for a variety of reasons, including biocompatibility and ease of manufacture relative to plastic. In addition, silicone often offers flexibility in design that does not sacrifice quality or durability.The migration from thermoplastic tubing to silicone tubing is occurring for several reasons. From a biocompatibility standpoint, silicone scores very well. This is primarily due to the following characteristics of the material:• Low toxicity.• Physiological inertness.• Low occurrence of leachables and extractables.• Hypoallergenicity.Silicone has been widely used in both implantable applications such as defibrillator and pacemaker lead covers and stents and non-implantable applications such as wound drainage. The material has also found various applications in biological sensors, prosthetics, and drug-delivery systems. It is possible that the long-term implantable product market has played a more significant role in the drive for silicone tubing than previously thought. Medical device manufacturers may look to differentiate their product from those of competitors by opting for silicone tubing instead of more traditionally used materials.Silicone tubing offers medical OEMs a growing selection of custom options. It can be provided in a variety of shapes and sizes, single or multiple lumens, ribbons, and combination materials. It is also available with balloon properties and variable cross sections that are not available in products in the plastic tubing market. Designers can also take advantage of its gas permeability properties. Another unique quality in the processing of silicone tubing is that unlike thermoplastic extrusion, water does not come into contact with silicone during any step of the extrusion process. (In the extrusion of thermoplastics, water is required to size and cool the product.) Water can potentially add pyrogen contaminants to the material, which can negatively affect the bio-compatibility properties of the tubing.Silicone ExtrusionSilicone tubing is available in a wide durometer range (50–80 Shore A hardness), and its color characteristics can include clear, translucent, or opaque versions. In addition, radiopaque tubing in either a striped or solid form can be produced from silicone. The material can be continuously extruded to encompass a broad spectrum of sizes. For example, silicone can be extruded for very small diameters and tolerances (e.g., 0.01-in. outer diameter, ±0.0005 in.). Conversely, the material can be extruded to sizes exceeding 3 in.The tubing can also be tapered (bumped), a process in which the inner or outer diameter is stretched down to smaller diameters and then back up to original size. This is useful in applications in which the tubing may need to be more rigid or withstand higher pressures on one end of the tubing, or where a larger profile would facilitate insert molding operations. Some of these applications include peripherally inserted central (PIC) catheters and 7 FR double-D insert-molded tubing. Both inner and outer diameters can be adjusted by changing the shape or size of the tube on the fly, prior to curing. Extruders can accomplish this by moving the extrusion mandrel or changing the die shape.Designers sometimes desire a specific shape along the tube length. For example, peritoneal dialysis tubing may require a spiral shape to aid in device functionality. Because silicone is a heat-cured material, partially cured or uncured extruded profiles can be placed into forming trays or other specialized molds to help set a specified shape without altering physical properties or crucial dimensions. Expertise gained from working experience with silicone becomes pivotal in achieving desired results, through a combination of extruding, shaping, and curing techniques.Braiding and ReinforcementSilicone tubing carries a reputation for not being able to withstand extreme pressures as well as comparably sized thermoplastic tubing. However, a designer requiring a softer or more flexible tube that still has resistance to pressure can specify a reinforced version. Silicone extrusions can be embedded or reinforced by braiding or spiral winding with a variety of materials. Polyester and stainless steel are common supplemental materials.Braiding occurs as a secondary operation and provides kink resistance as well as an increased working pressure range. The reinforced silicone tube's inner layer is extruded (either hollow or over a core), braided or spiral wrapped, then reextruded with an additional layer of silicone, encapsulating all the components or layers. The process can be repeated for multiple layers.Due to advances in precision braiding equipment, very small stranded materials and steel wire or ribbon can add significant pressure resistance, kink resistance, and rigidity to small extruded shapes. Braiding requires a minimum inner tubing wall thickness and a minimum encapsulation thickness. Dimensional tolerances are typically larger due to stack-ups, which is a term used to describe the addition of different tolerances that must be considered in the production and functionality of each layer of the part. Core removal may also need to be considered to limit piece length.A Sampling of Applications for Silicone TubingSilicone is versatile and has high dielectric strength. It can be electrically insulating or conductive, and manufacturers can harness these potential properties by controlling the additives used during compounding. Silicone is also semipermeable to certain materials, which is helpful in drug-eluting applications. It is gas permeable, a useful trait for devices used to grow cell cultures.Silicone multilumen tubing is used extensively in long-term applications such as cardiac rhythm management. Multilumen silicone tubing is the conduit for electrical leads and provides an insulated path for signals from the pacemaker or defibrillator. It has also found use in short-term applications such as urinary catheters and PIC catheters.Processing the MaterialTypically, extrusion outer diameters are round, but other shapes are possible through wire EDM technology. Interior lumens do not need to be round or balanced, although great care must be exercised to calculate the total stack-up of dimensioned tolerances. Most applications require strict attention to the wall thickness of each lumen, but the webbing and space between the lumens is often neglected. Frequently the lack of land area and eventual loss of total tolerance is not discovered until the tubing manufacturer reviews design specifications for design of the die and mandrel tooling. The Rubber Manufacturers Association's tolerance guidelines are a good starting reference, although precision silicone extrusion manufacturers typically hold significantly tighter specifications. Even though lumen location variations of a few thousandths of an inch may be inconsequential to the functioning of the part, such details are crucial to both tooling design and the process for the extruder and, by extension, for the designer.Radiopaque stripes are required for many tubing applications that require radiographic (x-ray) confirmation of placement within the body. These stripes can be coextruded into the tube wall (either embedded or surface location) with precision, allowing lumen geometry and placement to take precedence. Lumens used for single-lumen or multilumen tubing may be lined with wire, PTFE, PEEK, or other tubing.Another characteristic of silicone tubing is its ability to separate multilumen tubing for multifunctional applications. This strippable tubing is achieved by including a thin web (e.g., 0.007 × 0.010 in.) between discrete tubes. Multilumen tubing, with certain design restrictions, can transition to fewer lumens or change lumen size and location within the same tube. This has multiple uses in the wound-drainage market, for example.Silicone extrusions are ideal for prototype development—not only because they allow for easy feasibility testing but also because start-up costs are manageable. Silicone is a thermoset material that is extruded cold and heat cured. The process allows the extrusion operator to make quick setup and die and mandrel adjustments without the high-temperature hazards inherent with thermoplastics. Silicone extrusion also avoids problems with moisture, pellet mixing and melting, and scorch that challenge plastic operations—resulting in potentially fewer process variables.Identifying and controlling process variables is critical to precise extrusion operations. Silicone processes, whether molding, extrusion, or sheeting, require accurate, stable, and repeatable processes and equipment that minimize variation. Examples of variables are screw speed, infrared oven temperature, die pressure, pot life of catalyzed material, etc. The goal is to minimize such variations because they affect the final dimensions, yield, and the designer's satisfaction with both product performance and cost.LimitationsAlthough characteristics such as inertness and ease of manufacture make this product attractive, silicone does have some limitations, including lower tear strength when compared with its urethane counterparts. It also has a lower burst pressure in an unreinforced state. Silicone tubing also has limitations with respect to the type of fluid that is passing through it. It is not recommended for use with concentrated acids or bases, organic solvents, or oils. However, silicone compounders are working on improved silicone chemistry to enhance its appeal to OEMs.Establishing PartnershipsWhen choosing an extrusion provider, medical OEMs should seek out the following capabilities:• Extrusion tooling design expertise.• Engineering support.• Engineers and operators with an extensive silicone extrusion background.Extrusion R& D capabilities that provide short turnaround times should be a top priority, especially when determining the feasibility of several designs. Selecting fabricators that have good relationships with raw silicone material suppliers, as well as those possessing a thorough understanding of available silicone compounds, is key. Partnerships should be formed with companies that are willing to invest in the latest technology and test and develop new processes.ConclusionThe market for silicone tubing seems ripe for growth due to its use for wound-drainage devices, catheters, and other easily sterilized disposable products. Silicone enables the creation of products that can be provided in a multitude of designs, shapes, and hardnesses. The ability of silicone tubing to meet current and emerging demands and help forge new ideas depends heavily on the medical OEM's ability to receive consistent, high-quality product. When that happens, OEMs can focus on the more difficult functional aspects of their devices and trust the product designer to understand and apply silicone extrusion processes. 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FDA listed, Food Grade Silicone Rubber Tubing We are manufacturers of top grade silicone rubber tubing of all size and shape. We manufacture rubber tubes including general purpose tubing, medical tubing, surgical tubing, food and beverage tubing, chemical resistance tubing, metric tubing and silicone tubing that can sustain extremely high and extremely low temperature in working conditions. We manufacture it in wide variety of colors and designs. We also accept all kind of custom designs. we can manufacture and deliver products based on your requirements. Availability of Silicone Tubing at Himsan Polymer: Silicone Tubing available from Platinum or Peroxide Cured Silicone Rubber. It is also available in colored or Translucent Material upon your request. We make it available in Cut to Length of your choice. It’s available in hardness range from 50 to 75 Shore-A scale. Silicone tubing Size range from 0.5MM Inside Diameter to 120MM Inside Diameter. We provide thin and Thick wall silicone tubing in various sizes. Wall thickness from 0.50MM up to 10MM depending on size of tubing and your requirements. Silicone tubing are available from USFDA, USP CL VI approved materials. General Property of Silicone : Silicone is suitable for continuous operation at temperatures from -80°C to 250°C No harmful toxic or physiological effects of silicone. Resistant to ozone, UV and corona discharge. Electrically insulating with dielectric strength 500 V/mil. Low flammability and low smoke. High-Purity Silicone Tubing : Here at Himsan Polymer, Silicone Tubing is offered in a variety of different options including standard, pump and extended life pump tubing. These products have been specifically formulated for use with sensitive media found in pharmaceutical and biotech processing. Silicone Tubing is ideal for extended-life pumping and in applications demanding ultimate purity in fluid transfer and peristaltic pump operations.
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Himsan Polymer supply a wide range of Silicone rubber corona treater sleeves ranging in diameters from 50mm to 125mm and in a selection of wall thicknesses to suit your corona treatment unit. Our range of silicone sleeves are designed to give a high level of electrical, chemical and thermal resistance, a detailed specification is set out below. SPECIFICATIONAppearance: Translucent.Hardness : 60-70 Shore ADensity: 1.2Temperature range: 80º to 250º C. (-110º to 480º F)Elongation at break: 500%Tensile Strength: 11.0MpaTear Strength: 24kgf/cmFEATURESDo not break or crack under unusual web tension.Require much lower web tension.Due to sleeve treat can be operated with much smaller air gap.Easy to replaceGood Electrically InsulationOzone Corona discharge resistanceSuitable for continuous operation at 180º C & can be also operated at higher temperature without loss of any mechanical & dielectric properties.Having high dielectric strength 20 kV/mmResilient & flexible for case of Insulation on to treatment roll Long LifeSize available from 2” ID to 5” ID & wall thickness 2.00mm to 5.00mm (±0.2mm)Normally available from stock in opaque colorSpecial size & colors available on request.Keywords:- corona silicone sleevesilicone corona treater sleevessilicone sleeve for corona treatercorona roller sleevescorona silicone sleevecorona sleevecorona treater silicone sleevescorona treater sleevecorona treater sleevessilicone heat sleevesilicone hose sleevesilicone insulation sleevesilicone rubber sleevesilicone rubber sleeve indiasilicone rubber sleeve manufacturerssilicone shrink sleevesilicone sleevesilicone sleeve 5 ozsilicone sleeve adssilicone sleeve aventsilicone sleeve avent glass bottlesilicone sleeve baby bottlesilicone sleeve dealers in delhisilicone sleeve ebaysilicone sleeve evic vtc minisilicone sleeve for achilles tendonsilicone sleeve for amputeesilicone sleeve for aspire pegasussilicone sleeve for avent natural glass bottlessilicone sleeve for born free glass bottlessilicone sleeve for cool fire 4silicone sleeve for corona treatersilicone sleeve for dr brown's glass bottlessilicone sleeve for drinking glassessilicone sleeve for e cigsilicone sleeve for eleaf istick 100wsilicone sleeve for eleaf istick 50wsilicone sleeve for evenflo glass bottlesilicone sleeve for evic minisilicone sleeve for evic vtsilicone sleeve for glass avent bottlesilicone sleeve for glass bottlesilicone sleeve for hammer toesilicone sleeve for iphone 4silicone sleeve for ipv d2silicone sleeve for kangertech subox minisilicone sleeve for kboxsilicone sleeve for kindle paperwhitesilicone sleeve for klean kanteensilicone sleeve for led stripsilicone sleeve for mason jarsilicone sleeve for neboxsilicone sleeve for polesilicone sleeve for pura kikisilicone sleeve for rx200silicone sleeve for sigelei 100wsilicone sleeve for sigelei 150 tcsilicone sleeve for sigelei 50wsilicone sleeve for sigelei 75 wattsilicone sleeve for toessilicone sleeve for tommee tippeesilicone sleeve for travel mugsilicone sleeve for tumblrsilicone sleeve for vapesilicone sleeve for vape modssilicone sleeve for vapor flasksilicone sleeve for voss bottlesilicone sleeve for voss water bottlesilicone sleeve for voyager airsilicone sleeve for water bottlesilicone sleeve for wii balance boardsilicone sleeve for wii remotesilicone sleeve for x cube 2silicone sleeve for xcube 2silicone sleeve glass baby bottlesilicone sleeve glass water bottlesilicone sleeve glasswaresilicone sleeve home depotsilicone sleeve hs codesilicone sleeve hydro flasksilicone sleeve indiasilicone sleeve iphone 6silicone sleeve ipv minisilicone sleeve ipv mini 2silicone sleeve ipv3silicone sleeve ipv3 lisilicone sleeve ipv4silicone sleeve istick 50wsilicone sleeve joyetech cuboidsilicone sleeve kbox minisilicone sleeve macbook prosilicone sleeve malaysiasilicone sleeve manufacturersilicone sleeve manufacturer delhisilicone sleeve manufacturer in indiasilicone sleeve mason jarsilicone sleeve ml classsilicone sleeve moldsilicone sleeve mugsilicone sleeve prosthetic legsilicone sleeve reuleauxsilicone sleeve rx200silicone sleeve scarsilicone sleeve scrunchiessilicone sleeve sigelei 150silicone sleeve smok aliensilicone sleeve snow wolfsilicone sleeve straight razorsilicone sleeve sx minisilicone sleeve tea cupsilicone sleeve toesilicone sleeve tubingsilicone sleeve uksilicone sleeve walmartsilicone sleeve water bottlesilicone sleeve wine glassessilicone sleeves 3mmsilicone sleeves for glass bottlessilicone wire sleeve
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Silicone tubing has increased its market share due to its performanceSome of the most useful properties of silicone include:• Good electrical insulation making it suitable for a wide range of electrical applications• Thermal stability• Though not a hydrophobe, it has the ability to repel water and form watertight seals• Excellent resistance to oxygen, ozone and UV light leading to widespread use in the construction industry (coatings, fire protection, glazing seals), and automotive industry• Non-stick• Low chemical reactivity• Low toxicity, but does not support microbiological growth• High gas permeability: at room temperature (25 °C) the permeability of silicone rubber for gases like oxygen is approximately 400 times that of butyl rubber, making silicone useful for medical applicationsIt has become more popular in the medical device market over the last five years. Silicone is gradually replacing tubing from other polymers such as PTFE in surgical instrumentation to implantable drug-delivery systems. Silicone tubing offers biocompatibility and ease of manufacturing and also offers good choice in design without sacrificing quality or durability. Good biocompatibility compared to other thermoplastic has finally given silicone tubing a boost. Silicone tubing, mainly due to the following characteristics offers advantages over thermoplastic tubing:• Low toxicity• Physiological inertness• Low occurrence of leachable and extractable• HypoallergenicitySilicone has been widely used in both implantable applications such as defibrillator and pacemaker lead covers and stents and non implantable applications such as wound drainage. The material has also found various applications in biological sensors, prosthetics, and drug-delivery systems. Silicone tubing is available in a wide durometer range (20–90 Shore A hardness), and its color characteristics can include clear, translucent, or opaque versions. In addition, radiopaque tubing in either a striped or solid form can be produced from silicone. The material can be continuously extruded to encompass a broad spectrum of sizes. For example, silicone can be extruded for very small diameters and tolerances (0.01-in. outer diameter, ±0.0005 in.). Conversely, the material can be extruded to sizes exceeding 3 in. Designers sometimes desire a specific shape along the tube length. Silicone is a heat-cured material; partially cured or uncured extruded profiles can be placed into forming trays or other specialized molds to help set a specified shape without altering physical properties or crucial dimensions.Silicone tubing carries a reputation for not being able to withstand extreme pressures as well as comparably sized thermoplastic tubing. However, a designer requiring a softer or more flexible tube that still has resistance to pressure can specify a reinforced version. Silicone extrusions can be embedded or reinforced by braiding or spiral winding with a variety of materials. Polyester and stainless steel are common supplemental materials.Braiding occurs as a secondary operation and provides kink resistance as well as an increased working pressure range. The reinforced silicone tube’s inner layer is extruded (either hollow or over a core), braided or spiral wrapped, then re extruded with an additional layer of silicone, encapsulating all the components or layers. The process can be repeated for multiple layers.The developments in precision braiding equipment, very small stranded materials and steel wire or ribbon can impart significant pressure resistance, kink resistance, and rigidity to small extruded shapes. Braiding requires a minimum inner tubing wall thickness and a minimum encapsulation thickness. Dimensional tolerances are typically larger due to stack-ups, which is a term used to describe the addition of different tolerances that must be considered in the production and functionality of each layer of the part. Core removal may also need to be considered to limit piece length.Another characteristic of silicone tubing is its ability to separate multilumen tubing for multifunctional applications. This strippable tubing is achieved by including a thin web (0.007 × 0.010 in.) between discrete tubes. Multilumen tubing, with certain design restrictions, can transition to fewer lumens or change lumen size and location within the same tube. This has multiple uses in the wound-drainage market.Inertness and ease of manufacture provides advantages to silicone tubing. Silicone tubing has some limitations, including lower tear strength when compared with PU tubing. Low burst pressure of silicone tubing without reinforcement compared to the other thermoplastic tubing is another limitation. Silicone tubing also has limitations in chemical resistance to fluids like concentrated acids or bases, organic solvents, or oils.
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Differences between Platinum-Cured and Peroxide-Cured Silicone Himsan Polymer provides silicone gaskets in various styles to meet many requirements. These are for use in specialty applications such as in Pharmaceutical or other sanitary applications. The curing processes differ in that they produce gaskets with different physical characteristics. Unlike the traditional Peroxide-Cured Silicone, Platinum-Cured Silicone does not produce peroxides or ketones as part of the catalyzing process which can affect taste tests. As a result, Platinum-Cured Silicone is becoming a more popular choice in medical, food, drink, and dairy applications. Platinum-Cured Silicone also offers improved clarity, particularly important in translucent products, where it is possible to tint with a specified color to achieve a unique look. A smoother surface finish can also be achieved, which again is important in certain industries. Platinum-Cured Silicone is superior in physical properties over Peroxide-Cured Silicone. In some cases, increases in tensile strength, elongation, and tear strength can be experienced. Silicone Tubing is one of the most widely used materials in the high purity process industry. As the industry shifts away from exclusively stainless fluid paths and introduces more and more single use options, silicone tubing shines for a couple of major reasons. First, and foremost, is safety. Silicone tubing does not contain plasticizers or other additives that can leach into product and cause toxicological issues. Second, silicone tubing is highly flexible, resistant to kinking and tearing, and a good choice for use with peristaltic pumps. Other key tubing performance characteristics, such as tensile strength, elongation, and tear strength are slightly better with platinum cured products, but not overwhelmingly so. Peristaltic pump life is typically longer for peroxide cured tubing product than with platinum cured products of similar formulation, however special long pump life platinum cured silicone products are available. The chief advantage to platinum cured silicone products are the extremely low levels of extractables and leachables. While post-cure methods are effective in reducing levels of siloxanes present in peroxide-cured methods, some organic acids remain. Because of ability to control platinum cured products, by-products are not an issue. This gives platinum cured products the reputation for being the highest purity products. All good silicone tubing products should have full characterization and validation profiles, including total organic carbon profiles and relative levels of extractables and leachables, to help aide in selection of tubing. To conclude, there are two major types of silicone tubing available for use in the high purity process world. Both free radical (peroxide) and addition (platinum) cured mechanisms offer safe, durable, and effective means for fluid transport and handling. The two cure systems do, however, produce materials with different characteristics whose impact should be considered before tubing selection. Peroxide cured silicones, while less translucent, tend to have lower spallation tendencies and better pump life. Platinum cured products offer ultra-high purity characteristics with extremely low extractables and leachables. Email us to get more details info@himsanpolymer.com. URL:- www.himsanpolymer.com
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