APG stocks the VQ4365, an AS568-365 black Viton® (FKM) 75 Shore A quad profile Quad-Ring built to an inside diameter of 6.975 in (177.17 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 7.395 in (187.83 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.
As a material, Viton® (FKM) is known for outstanding high-temperature capability, excellent resistance to compression set and permeation. It resists aromatic hydrocarbons, aggressive chemicals, and chlorinated solvents. 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.
You will find this material specified across high-temperature process equipment, oil and gas, and semiconductor equipment.
This item is sold individually under part number VQ4365. Nominal inside diameter is listed as 7 inch. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
description *4365-514AD MINNESOTA RUBBER QUAD RING
Actual_ID 6.975 inch (177.17 mm)
Actual_OD 7.395 inch (187.83 mm)
Actual_CS 0.21 inch (5.33 mm)
ProductCode Description O-Rings - Square/Quad - Premium