Ordered as V75380, this is an AS568-380 black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 11.475 in (291.47 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 11.895 in (302.13 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.
The material holds up against engine and transmission fluids, aromatic hydrocarbons, and many acids. That behavior comes from the compound itself: Viton® (FKM) is specified 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. It is not the right choice where hot water and steam or low-molecular-weight organic acids are present.
You will find this material specified across high-temperature process equipment, semiconductor equipment, and chemical processing.
Stocked as V75380 and sold individually. Nominal inside diameter is listed as 11 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
description -380 BLACK FKM 75D O-RING
uf_description2 0.210" (5.33MM) CS X 11.475" (291.46MM) ID
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 11.475 inch (291.47 mm)
Actual_OD 11.895 inch (302.13 mm)
ProductCode Description O-Rings - Bulk - Commodity