This o-ring is supplied in AS568-412 black Viton® (FKM) 75 Shore A supplied with an inside diameter of 2.85 in (72.39 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 3.4 in (86.36 mm), catalogued under part number VITON75412. It creates a positive seal at flange, piston and rod interfaces without added hardware.
The compound resists petroleum oils and fuels, aromatic hydrocarbons, and aggressive chemicals. That behavior comes from the compound itself: Viton® (FKM) is known for the industry benchmark where nitrile reaches its thermal limit and outstanding high-temperature capability. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). Verify compatibility before use with hot water and steam or low-molecular-weight organic acids.
Common environments for this compound include automotive fuel systems, aerospace, and semiconductor equipment.
Order part number VITON75412, sold individually. Unit weight is approximately 17.513 g and nominal inside diameter is listed as 2 7/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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 -412 BLACK CHEMOURS VITON 75D O-RING
uf_description2 0.275" (6.99MM) CS X 2.850" (72.39MM) ID
Actual_CS 0.275 inch (6.99 mm)
Actual_ID 2.85 inch (72.39 mm)
Actual_OD 3.4 inch (86.36 mm)
ProductCode Description O-Rings - Bulk - Commodity