The V90243 is an AS568-243 black Viton® (FKM) 90 Shore A O-Ring with an inside diameter of 4.109 in (104.37 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.387 in (111.43 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
As a material, Viton® (FKM) offers very low compression set at elevated temperature and long service life in hot, chemically aggressive environments. The compound resists aromatic hydrocarbons, petroleum oils and fuels, and chlorinated solvents. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Applications involving hot water and steam or ketones and esters call for a different compound.
It sees regular use in high-temperature process equipment, semiconductor equipment, and chemical processing.
This item is sold individually under part number V90243. Unit weight is approximately 6.011 g and nominal inside diameter is listed as 4 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description -243 BLACK FKM 90D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 4.109 inch (104.37 mm)
Actual Outside Diameter 4.387 inch (111.43 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity