This o-ring is supplied in AS568-395 black PTFE-Encapsulated Viton® 90 Shore A measuring an inside diameter of 25.94 in (658.88 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 26.36 in (669.54 mm), catalogued under part number TEV80395. It remains the most cost-effective sealing element available for pressurized assemblies.
The compound resists aggressive oxidizers, strong acids and solvents, and nearly all process chemicals. That behavior comes from the compound itself: PTFE-Encapsulated Viton® is specified for chemical inertness of PTFE with the memory of a rubber o-ring and a non-stick sealing surface that resists fouling. Continuous operating temperature is published at -75°F (-59.4°C) to 400°F (204.4°C). It is not the right choice where service requiring tight-radius dynamic flexing or installation over sharp edges without care are present.
You will find this material specified across chemical processing, aggressive-media valves and pumps, and pharmaceutical manufacturing.
Reference part number TEV80395 when ordering; the item is sold individually. Nominal inside diameter is listed as 26 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description *568-395 FEP ENCAPSULATED VITON ORING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 25.94 inch (658.88 mm)
Actual Outside Diameter 26.36 inch (669.54 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium