The V75MD345 is an AS568-345 blue Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 3.975 in (100.97 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.395 in (111.63 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
As a material, Viton® (FKM) is known for the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. It resists engine and transmission fluids, aromatic hydrocarbons, and aggressive chemicals. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). It is not the right choice where amines or ketones and esters are present.
This o-ring meets FDA requirements for food contact, carries NSF listing, and is metal detectable for HACCP and foreign-body control programs. Typical settings include aerospace, oil and gas, and semiconductor equipment.
Stocked as V75MD345 and sold individually. Nominal inside diameter is listed as 4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description -345 BLUE FKM 75D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 3.975 inch (100.97 mm)
Actual Outside Diameter 4.395 inch (111.63 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable