568-422 FEP ENCAPSULATED SILICONE

Ordered as TES70422, this is an AS568-422 red PTFE-Encapsulated Silicone 70 Shore A O-Ring with an inside diameter of 4.1 in (104.14 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.65 in (118.11 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Additional detail on this item: ORING 70 Durometer.

It resists wide temperature swings, strong acids and solvents, and steam. That behavior comes from the compound itself: PTFE-Encapsulated Silicone is widely chosen for a seamless PTFE jacket over a resilient silicone core and strong resistance to permeation. Published continuous service range is -75°F (-59.4°C) to 400°F (204.4°C). Verify compatibility before use with installation over sharp edges or tight-radius dynamic flexing.

It sees regular use in pharmaceutical manufacturing, food and beverage processing, and cryogenic and high-temperature equipment.

Stocked as TES70422 and sold individually. Nominal inside diameter is listed as 4 1/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.