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
uf_description2 90 DUROMETER
Actual_CS 0.103 inch (2.62 mm)
Actual_ID 7.987 inch (202.87 mm)
Actual_OD 8.193 inch (208.1 mm)
ProductCode Description O-Rings - Bulk - Premium