This o-ring is supplied in AS568-338 black Viton® (FKM) 75 Shore A measuring an inside diameter of 3.1 in (78.74 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.52 in (89.41 mm), catalogued under part number V75338. It remains the most cost-effective sealing element available for pressurized assemblies.
Viton® (FKM) is specified here for long service life in hot, chemically aggressive environments and industry benchmark where nitrile reaches its thermal limit. It resists petroleum oils and fuels, chlorinated solvents, and engine and transmission fluids. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). It is not the right choice where ketones and esters or low-molecular-weight organic acids are present.
Typical settings include chemical processing, automotive fuel systems, and aerospace.
Reference part number V75338 when ordering; the item is sold individually. Unit weight is approximately 11.08 g and nominal inside diameter is listed as 3 1/8 inch. Check the compound against your process media, pressure and temperature before committing to a design.
description -338 BLACK FKM 75D O-RING
uf_description2 0.210" (5.33MM) CS X 3.100" (78.74MM) ID
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 3.1 inch (78.74 mm)
Actual_OD 3.52 inch (89.41 mm)
ProductCode Description O-Rings - Bulk - Commodity