5.7MM CS X 174.3MM ID BLACK FKM 75D

APG stocks the V5.7X174.3, a black Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 174.3 mm (6.862 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 185.7 mm (7.31 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. The catalog record notes: Metric O-RING, JIS G175.

It resists aromatic hydrocarbons, petroleum oils and fuels, and aggressive chemicals. That behavior comes from the compound itself: Viton® (FKM) delivers the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Applications involving low-molecular-weight organic acids or ketones and esters call for a different compound.

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

Order part number V5.7X174.3, sold individually. Unit weight is approximately 26.578 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.