*Q-251 FLUOROELASTOMER 75 Q RING

This quad-ring is supplied in AS568-251 black Viton® (FKM) 75 Shore A with an inside diameter of 5.109 in (129.77 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.387 in (136.83 mm), catalogued under part number QV70251. It seats in a standard o-ring gland while offering improved dynamic performance.

The compound resists aggressive chemicals, aromatic hydrocarbons, and many acids. Viton® (FKM) delivers very low compression set at elevated temperature and outstanding high-temperature capability. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Applications involving amines or ketones and esters call for a different compound. The profile itself contributes lower compressive load required to achieve a seal and a parting line located away from the sealing surface.

Maintenance and OEM teams specify it across high-temperature process equipment, semiconductor equipment, and oil and gas.

Stocked as QV70251 and sold individually. Unit weight is approximately 8.264 g and nominal inside diameter is listed as 5 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.