3MM CS X 300MM ID BLACK FKM 75D

APG stocks the V3X300, a black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 300 mm (11.811 in), a cross section of 3 mm (0.118 in), and an outside diameter of 306 mm (12.05 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

It resists aromatic hydrocarbons, aggressive chemicals, and petroleum oils and fuels. That behavior comes from the compound itself: Viton® (FKM) is widely chosen for outstanding high-temperature capability and very low compression set at elevated temperature. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Applications involving ketones and esters or low-molecular-weight organic acids call for a different compound.

Common environments for this compound include aerospace, semiconductor equipment, and high-temperature process equipment.

Reference part number V3X300 when ordering; the item is sold individually. Unit weight is approximately 12.271 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.