-281 BROWN FKM 75D O-RING

The VB75281 is an AS568-281 brown Viton® (FKM) 75 Shore A O-Ring supplied with an inside diameter of 14.984 in (380.59 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 15.262 in (387.65 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against aromatic hydrocarbons, engine and transmission fluids, and aggressive chemicals. That behavior comes from the compound itself: Viton® (FKM) is known for excellent resistance to compression set and permeation, very low compression set at elevated temperature. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). Applications involving amines or hot water and steam call for a different compound.

Maintenance and OEM teams specify it across aerospace, high-temperature process equipment, and oil and gas.

Stocked as VB75281 and sold individually. Unit weight is approximately 23.666 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.