The H4X74 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 74 mm (2.913 in), a cross section of 4 mm (0.157 in), and an outside diameter of 82 mm (3.23 in). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. It resists many alcohols, hydraulic fluids, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with polar solvents or ozone and direct sunlight.
You will find this material specified across construction equipment, hydraulic and pneumatic systems, and agricultural equipment.
This item is sold individually under part number H4X74. Unit weight is approximately 3.819 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
description 4MM CS X 74MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 82 mm (3.23 inch)
Actual_CS 4 mm (0.157 inch)
Actual_ID 74 mm (2.913 inch)
ProductCode Description O-Rings - Metric - Commodity