Solid Silicone Rubber Series 300 :: Silicone :: Gasket and Sheet Materials

COHRlastic® solid silicone rubber general-purpose molded sheet form has a smooth, blemish-free surface. Available in 36" x 36" sheets only. It is available in relatively soft, 30 durometer on the Shore A scale, in thicknesses up to 1/2". It withstands temperatures from -100 degrees F to +500 degrees F. Available only in red. This product can be purchased plain, with Acrylic PSA or with Silicone PSA.
COHRlastic® is the trade name for CHR's family of high performance silicone rubber products. Flexible, resilient silicone rubber has a unique chemical structure which gives it a high temperature stability and general inertness unavailable in any other elastomer. As a result, silicone rubber works in applications where no other material can be used.
Thermal Stability:
Silicone's physical properties are not adversely affected by prolonged exposure to temperatures from -100 degrees F to +500 degrees F. In addition, it can withstand intermittent exposure to even higher temperatures. Silicone far out-distances other elastomers in resistance to thermal degradation and outperforms other elastomers in general service life, compression set-resistance, electrical strength and non-stick properties. Silicone also has good chemical and fluid resistance. Although it may swell in contact with some solvents, the rubber will return to its original dimensions, usually without permanent deterioration, after the solvent has evaporated. At elevated temperatures, SGPPL silicone will outgas far less than other silicone elastomers. And, if it should burn, it produces a non-conductive white ash and ordorless, non-toxic smoke.
Inertness:
COHRlastic® silicone rubber is odorless, tasteless and non-toxic. It contains no acid producing chemicals and therefore is non-corrosive and non-staining. Silicone rubber has excellent weather-ability because it is unaffected by sunlight, ozone and/or extreme moist or dry conditions. It will not support the growth of fungus. The service life of COHRlastic® silicone rubber in room temperature applications is virtually unlimited.
Silicone variations for specific applications:
General purpose silicone rubber itself is versatile material. Beyond that, there are different types available for specific applications. Silicone rubber compounded from a phenyl base will function down to -130 degrees F, with specialty formulations that will allow -170 degrees F usage. The benefit is greater strength, flexibility and compressibility at those temperatures than could be achieved with the more common methylvinyl compounds. Applications involving high heat and pressure call for a general purpose silicone rather than a high strength variety. Reversion can result from high temperature and pressure, and the general purpose compounds have better resistance to this phenomenon. When fuel and solvents are present, a florinated silicone rubber is the best choice. This polymer affords maximum resistance to swelling and degradation associated with those fluids.