The H7X475 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 475 mm (18.701 in), a cross section of 7 mm (0.276 in), and an outside diameter of 489 mm (19.25 in). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
The compound resists water, propane and butane, and greases and lubricants. Buna-N (Nitrile) is valued for low compression set under sustained load, reliable performance in both static and dynamic service. 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 strong acids or polar solvents are present.
You will find this material specified across automotive, construction equipment, and fluid power.
This item is sold individually under part number H7X475. Unit weight is approximately 72.388 g. Review your operating media and conditions against this specification before 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 7MM CS X 475MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 489 mm (19.25 inch)
Actual_CS 7 mm (0.276 inch)
Actual_ID 475 mm (18.701 inch)
ProductCode Description O-Rings - Metric - Commodity