Ordered as H2.5X7, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 7 mm (0.276 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 12 mm (0.47 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The compound resists greases and lubricants, propane and butane, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or strong acids.
Common environments for this compound include construction equipment, hydraulic and pneumatic systems, and automotive.
H2.5X7 ships individually. Unit weight is approximately 0.1829 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
description 2.5MM CS X 7MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 12 mm (0.47 inch)
Actual_CS 2.5 mm (0.098 inch)
Actual_ID 7 mm (0.276 inch)
ProductCode Description O-Rings - Metric - Commodity