-278 BROWN FKM 75D O-RING

APG stocks the VB75278, an AS568-278 brown Viton® (FKM) 75 Shore A O-Ring measuring an inside diameter of 11.984 in (304.39 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 12.262 in (311.45 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to aggressive chemicals, engine and transmission fluids, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) offers outstanding high-temperature capability and long service life in hot, chemically aggressive environments. 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 ketones and esters or hot water and steam.

Typical settings include automotive fuel systems, chemical processing, and aerospace.

Reference part number VB75278 when ordering; the item is sold individually. Unit weight is approximately 19.035 g and nominal inside diameter is listed as 12 inch. Review your operating media and conditions against this specification before installation.