This o-ring is supplied in AS568-218 black Viton® (FKM) 75 Shore A measuring an inside diameter of 1.234 in (31.34 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.512 in (38.4 mm), catalogued under part number VITON75218. It delivers dependable bidirectional sealing in a compact groove envelope.
Viton® (FKM) is known for the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. The compound resists aromatic hydrocarbons, aggressive chemicals, and engine and transmission fluids. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Applications involving ketones and esters or amines call for a different compound.
Maintenance and OEM teams specify it across chemical processing, aerospace, and high-temperature process equipment.
Stocked as VITON75218 and sold individually. Unit weight is approximately 1.9942 g and nominal inside diameter is listed as 1 1/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.
description -218 BLACK CHEMOURS VITON 75D O-RING
uf_description2 0.139" (3.53MM) CS X 1.234" (31.34MM) ID
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 1.234 inch (31.34 mm)
Actual_OD 1.512 inch (38.4 mm)
ProductCode Description O-Rings - Bulk - Commodity