This o-ring is supplied in AS568-171 black PTFE-Encapsulated Viton® 90 Shore A built to an inside diameter of 7.987 in (202.87 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 8.193 in (208.1 mm), catalogued under part number TEV80171. It creates a positive seal at flange, piston and rod interfaces without added hardware.
It resists steam, aggressive oxidizers, and strong acids and solvents. That behavior comes from the compound itself: PTFE-Encapsulated Viton® is widely chosen for a seamless PTFE jacket over a resilient elastomer core and long service life in aggressive chemical duty. The material carries a published service range of -75°F (-59.4°C) to 400°F (204.4°C).
Common environments for this compound include aggressive-media valves and pumps, food and beverage, and pharmaceutical manufacturing.
Order part number TEV80171, sold individually. Nominal inside diameter is listed as 8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Description 568-171 FEP ENCAPSULATED VITON ORING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 7.987 inch (202.87 mm)
Actual Outside Diameter 8.193 inch (208.1 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Premium