valve gaskets offer a unique double convex ring design that gives optimum sealing with only one third the torque commonly required with flat faced gaskets. Asahi offers EPDM gaskets from 1/ 2" to 12" ....

100% virgin, expanded PTFE, soft, flexible .with one side self adhesive strip. Chemical resistance against all chemicals from pH 0-14 except molten alkali metals and elemental fluorine at high....