-255 BLACK FKM 75D O-RING

APG stocks the V70255, an AS568-255 black Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 5.609 in (142.47 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.887 in (149.53 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Viton® (FKM) is specified for the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. It resists many acids, chlorinated solvents, and engine and transmission fluids. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). It should not be specified for service in low-molecular-weight organic acids or ketones and esters.

It sees regular use in oil and gas, automotive fuel systems, and high-temperature process equipment.

Reference part number V70255 when ordering; the item is sold individually. Unit weight is approximately 8.318 g and nominal inside diameter is listed as 5 5/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.