This quad-ring is supplied in AS568-146 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 2.612 in (66.34 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.818 in (71.58 mm), catalogued under part number HQ4146. It delivers lower friction and better sealing stability than a comparable round-section o-ring.
The compound resists hydraulic fluids, propane and butane, and greases and lubricants. Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or ozone and direct sunlight will shorten service life. The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.
You will find this material specified across general industrial maintenance, construction equipment, and fluid power.
This item is sold individually under part number HQ4146. Nominal inside diameter is listed as 2 5/8. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
description *4146-366Y MINNESOTA RUBBER QUAD RING
Actual_ID 2.612 inch (66.34 mm)
Actual_OD 2.818 inch (71.58 mm)
Actual_CS 0.103 inch (2.62 mm)
ProductCode Description O-Rings - Square/Quad - Premium