Ordered as H4X41, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 41 mm (1.614 in), a cross section of 4 mm (0.157 in), and an outside diameter of 49 mm (1.93 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. It resists many alcohols, water, and greases and lubricants. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ozone and direct sunlight or strong acids call for a different compound.
You will find this material specified across general industrial maintenance, construction equipment, and automotive.
Reference part number H4X41 when ordering; the item is sold individually. Unit weight is approximately 2.2151 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
description 4MM CS X 41MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 49 mm (1.93 inch)
Actual_CS 4 mm (0.157 inch)
Actual_ID 41 mm (1.614 inch)
ProductCode Description O-Rings - Metric - Commodity