-437 BLUE FKM 75D O-RING

Ordered as V75MD437, this is an AS568-437 blue Viton® (FKM) 75 Shore A O-Ring measuring an inside diameter of 5.975 in (151.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.525 in (165.74 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

It resists aromatic hydrocarbons, many acids, and chlorinated solvents. That behavior comes from the compound itself: Viton® (FKM) is widely chosen for excellent resistance to compression set and permeation, 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). It should not be specified for service in low-molecular-weight organic acids or amines.

The compound meets FDA requirements for food contact, carries NSF listing, and is metal detectable for HACCP and foreign-body control programs. Typical settings include chemical processing, automotive fuel systems, and aerospace.

Reference part number V75MD437 when ordering; the item is sold individually. Nominal inside diameter is listed as 6 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.