As standard we use high-grade stainless steels such as 1.4404 / 316L or 1.4435. For aggressive media or WFI we also offer high-alloy grades such as 1.4539, 1.4529 or 2.4602 (Hastelloy). Depending on the application, seals are available in EPDM, silicone, Viton or PTFE.