*568-138 FEP ENCAPSULATED SILICONE

Part number TES70138 is an AS568-138 red PTFE-Encapsulated Silicone 70 Shore A O-Ring measuring an inside diameter of 2.112 in (53.64 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.318 in (58.88 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Source specification: ORING 70 Durometer.

PTFE-Encapsulated Silicone is specified here for seamless PTFE jacket over a resilient silicone core and excellent recovery across extreme temperature cycling. The material holds up against steam, nearly all process chemicals, and strong acids and solvents. The material carries a published service range of -75°F (-59.4°C) to 400°F (204.4°C). It is not the right choice where tight-radius dynamic flexing or installation over sharp edges are present.

Common environments for this compound include chemical processing, pharmaceutical manufacturing, and food and beverage processing.

This item is sold individually under part number TES70138. Nominal inside diameter is listed as 2 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.