-344 BROWN FKM 75D O-RING

APG stocks the VB75344, an AS568-344 brown Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 3.85 in (97.79 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.27 in (108.46 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against aromatic hydrocarbons, chlorinated solvents, and petroleum oils and fuels. 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).

You will find this material specified across semiconductor equipment, chemical processing, and high-temperature process equipment.

This item is sold individually under part number VB75344. Unit weight is approximately 14.826 g and nominal inside diameter is listed as 3 7/8 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.