APG stocks the VB90322, an AS568-322 brown Viton® (FKM) 90 Shore A O-Ring built to an inside diameter of 1.225 in (31.12 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.645 in (41.78 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
It resists many acids, aggressive chemicals, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) is specified for long service life in hot, chemically aggressive environments and outstanding high-temperature capability. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in amines or low-molecular-weight organic acids.
You will find this material specified across semiconductor equipment, aerospace, and oil and gas.
Stocked as VB90322 and sold individually. Unit weight is approximately 5.747 g and nominal inside diameter is listed as 1 1/4 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -322 BROWN FKM 90D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 1.225 inch (31.12 mm)
Actual Outside Diameter 1.645 inch (41.78 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity