568-238 FEP ENCAPSULATED SILICONE

This o-ring is supplied in AS568-238 red PTFE-Encapsulated Silicone 70 Shore A measuring an inside diameter of 3.484 in (88.49 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.762 in (95.55 mm), catalogued under part number TES70238. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. This item is further identified as ORING 70 Durometer.

PTFE-Encapsulated Silicone is specified here for excellent recovery across extreme temperature cycling and strong resistance to permeation. The material holds up against nearly all process chemicals, strong acids and solvents, and wide temperature swings. Service temperature is rated from -75°F (-59.4°C) through 400°F (204.4°C).

Common environments for this compound include food and beverage processing, cryogenic and high-temperature equipment, and pharmaceutical manufacturing.

Reference part number TES70238 when ordering; the item is sold individually. Nominal inside diameter is listed as 3 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.