APG stocks the H8.4X254.5, a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 254.5 mm (10.02 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 271.3 mm (10.68 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Additional detail on this item: Metric O-RING, JIS P255.
Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. This material stands up to greases and lubricants, propane and butane, and water. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).
It sees regular use in automotive, fluid power, and general industrial maintenance.
This item is sold individually under part number H8.4X254.5. Unit weight is approximately 56.183 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
description 8.4MM CS X 254.5MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING, JIS P255
Actual_OD 271.3 mm (10.68 inch)
Actual_CS 8.4 mm (0.331 inch)
Actual_ID 254.5 mm (10.02 inch)
ProductCode Description O-Rings - Metric - Commodity