-249 BROWN FKM 75D O-RING

Part number VB75249 is an AS568-249 brown Viton® (FKM) 75 Shore A O-Ring measuring an inside diameter of 4.859 in (123.42 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.137 in (130.48 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

This material stands up to many acids, petroleum oils and fuels, and chlorinated solvents. That behavior comes from the compound itself: Viton® (FKM) is known for the industry benchmark where nitrile reaches its thermal limit, excellent resistance to compression set and permeation. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Verify compatibility before use with low-molecular-weight organic acids or ketones and esters.

It sees regular use in aerospace, oil and gas, and semiconductor equipment.

This item is sold individually under part number VB75249. Unit weight is approximately 8.0792 g and nominal inside diameter is listed as 4 7/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.