Part number HQ4341 is an AS568-341 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring built to an inside diameter of 2.475 in (62.87 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.895 in (98.93 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.
The material holds up against water, many alcohols, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. 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 ozone and direct sunlight or polar solvents are present.
You will find this material specified across agricultural equipment, general industrial maintenance, and hydraulic and pneumatic systems.
Reference part number HQ4341 when ordering; the item is sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
description *4341-366Y MINNESOTA RUBBER QUAD RING
Actual_ID 2.475 inch (62.87 mm)
Actual_OD 3.895 inch (98.93 mm)
Actual_CS 0.21 inch (5.33 mm)
ProductCode Description O-Rings - Square/Quad - Premium