1.78MM CS X 3.17MM ID BLACK FKM 75D

Part number V1.78X3.17 is a black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 3.17 mm (0.125 in), a cross section of 1.78 mm (0.07 in), and an outside diameter of 6.73 mm (0.26 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

This material stands up to aggressive chemicals, 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 and very low compression set at elevated temperature. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). It should not be specified for service in ketones and esters or low-molecular-weight organic acids.

You will find this material specified across oil and gas, semiconductor equipment, and automotive fuel systems.

Reference part number V1.78X3.17 when ordering; the item is sold individually. Unit weight is approximately 0.077 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.