1.6MM CS X 4.1MM ID BLACK FKM 75D

The V1.6X4.1 is a black Viton® (FKM) 75 Shore A O-Ring supplied with an inside diameter of 4.1 mm (0.161 in), a cross section of 1.6 mm (0.063 in), and an outside diameter of 7.3 mm (0.29 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against chlorinated solvents, aggressive chemicals, and engine and transmission fluids. That behavior comes from the compound itself: Viton® (FKM) is known for very low compression set at elevated temperature and the industry benchmark where nitrile reaches its thermal limit. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). Applications involving ketones and esters or amines call for a different compound.

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

Order part number V1.6X4.1, sold individually. Unit weight is approximately 0.0672 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.