High-purity peroxide-cured silicone avoids 2,4-dichlorobenzoic acid formation common in standard peroxide systems. It achieves ultra-low extractables required for ophthalmic and parenteral applications. Transparent grades allow visual inspection of seal integrity in syringes and vials. Hardness 30–70 Shore A covers both soft gaskets and rigid stoppers https://globalsealstech.com/medical/