HQ4236 is an AS568-236 black Buna-N (Nitrile) 70 Shore A Quad-Ring built to an inside diameter of 3.234 in (82.14 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.512 in (89.2 mm). In service, this quad-ring provides a dual sealing band on each contact face for improved reliability.
Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. This material stands up to many alcohols, petroleum-based oils, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where automotive brake fluid or ketones are present. The profile itself contributes two sealing bands per contact face rather than one and a parting line located away from the sealing surface.
Common environments for this compound include hydraulic and pneumatic systems, general industrial maintenance, and automotive.
Stocked as HQ4236 and sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description 4236-366Y MINNESOTA RUBBER QUAD RING
Actual Inside Diameter 3.234 inch (82.14 mm)
Actual Outside Diameter 3.512 inch (89.2 mm)
Actual Cross Section 0.139 inch (3.53 mm)
Measurement System Imperial
Product Category O-Rings - Square/Quad - Premium