-342 BLACK FKM 75D O-RING

The V75342 is an AS568-342 black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 3.6 in (91.44 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.02 in (102.11 mm). This o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against aromatic hydrocarbons, engine and transmission fluids, and petroleum oils and fuels. That behavior comes from the compound itself: Viton® (FKM) is valued for the industry benchmark where nitrile reaches its thermal limit, excellent resistance to compression set and permeation. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. It is not the right choice where hot water and steam or amines are present.

Maintenance and OEM teams specify it across automotive fuel systems, oil and gas, and chemical processing.

Order part number V75342, sold individually. Unit weight is approximately 12.56 g and nominal inside diameter is listed as 3 5/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.