The enclosed data sheet contains information about the various sizes, materials and approvals for the O ring seals of Zimmerlin covers. The majority of dimensions are available in the warehouse, but intermediate sizes must be ordered and may deviate with regard to approvals, color and durability.
Zimmerlin current seal materials include: silicone, EPDM, viton and FEP (similar to PTFE) coated seals with silicone, EPDM or viton core. Further PFA coated seals are also available (for temperatures up to 260°C).
Zimmerlin durability lists for the various seal qualities can be downloaded here (specifications without guarantee).