-253 BROWN FKM 75D O-RING

Ordered as VB75253, this is an AS568-253 brown Viton® (FKM) 75 Shore A O-Ring supplied with an inside diameter of 5.359 in (136.12 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.637 in (143.18 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Viton® (FKM) is valued for the industry benchmark where nitrile reaches its thermal limit and outstanding high-temperature capability. The compound resists aromatic hydrocarbons, petroleum oils and fuels, and engine and transmission fluids. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Applications involving low-molecular-weight organic acids or ketones and esters call for a different compound.

You will find this material specified across chemical processing, aerospace, and automotive fuel systems.

VB75253 ships individually. Unit weight is approximately 8.9131 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.