This o-ring is supplied in AS568-338 black Viton® (FKM) 75 Shore A with 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 VITON75338. It compresses into its gland to block fluid or gas migration across a joint.
Expect good resistance to aggressive chemicals, chlorinated solvents, and many acids. Viton® (FKM) is valued for excellent resistance to compression set and permeation, very low compression set at elevated temperature. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service.
Maintenance and OEM teams specify it across chemical processing, automotive fuel systems, and aerospace.
Order part number VITON75338, sold individually. Unit weight is approximately 10.921 g. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Description -338 BLACK CHEMOURS VITON 75D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 3.1 inch (78.74 mm)
Actual Outside Diameter 3.52 inch (89.41 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity