Silicone gasket

flexible

Silicone is widely used in pharmaceutical applications for two major reasons. First, and foremost, is safety. Silicone does not contain plasticizes or other additives that could leach into a drug product and cause toxicological issues. Second, silicone is highly flexible and tear-resistant, making it a good choice for sealing fluids in down stream processes. ​ In order to make Silicone gaskets there are two cure system options with silicones, however, that produce materials with different characteristics, whose impact should be considered before selection. Silicone materials may be cured using free radical (peroxide) or addition (platinum) cure mechanisms. ​ Platinum-cured and peroxide-cured silicone gaskets can both be made to USP Class VI and other industry specifications, but a platinum-cured gasket has a higher purity and lower leach ability than peroxide-cured silicone. Snap-On 1.5" Platinum Silicone CMD-1012 TRANS PLATINUM SILICONE TYPE-II CMD-1084 WHITE PLATINUM SILICONE CMD-1012 MINI PLATINUM SILICONE Out of gallery Click on the above photo for more details Platinum vs Peroxide Peroxide-cured gaskets contains a small residue of 2,4 DCBA (dichlorobenzoic acid) as a by-product of the curing reaction, platinum-cured gaskets has no 2,4 DCBA residues, its only by-product is H2O. In some critical bioprocesses the small amount of DCBA might have a negative impact on the media that is made. The relative value and impact of these characteristics should be evaluated carefully when selecting the silicone type for fluid handling applications. ​