-440 BLACK FKM 75D O-RING

This o-ring is supplied in AS568-440 black Viton® (FKM) 75 Shore A supplied with an inside diameter of 6.725 in (170.82 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 7.275 in (184.79 mm), catalogued under part number V75440. It remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to chlorinated solvents, engine and transmission fluids, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) delivers the industry benchmark where nitrile reaches its thermal limit and outstanding high-temperature capability. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). Exposure to hot water and steam or ketones and esters will shorten service life.

Common environments for this compound include aerospace, automotive fuel systems, and high-temperature process equipment.

Order part number V75440, sold individually. Nominal inside diameter is listed as 6 3/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.