SVKS has the capability of bonding a Teflon coating to the rubber diaphragm. This technique produces a diaphragm that is more suitable for harsh environments. 

All nonstandard rubber seals with different types and dimensions can be customized. Tianjin SVKS seal is supplying professional rubber seals, standard or nonstandard seals. We make those rubber seals exactly with your drawings and request. Materials can be NBR, VMQ, FKM, EPDM, PTFE, fabric reinforced material and also can be with your request. Teflon rubber diaphragm