2.5MM CS X 68MM ID BLACK BUNA 70D

Buna-N O-Ring, 2.5 x 68 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Unit of Measure
EA
SKU:
H2.5X68
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Product Specification

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APG stocks the H2.5X68, a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 68 mm (2.677 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 73 mm (2.87 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. It resists water, propane and butane, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ketones or strong acids.

You will find this material specified across fluid power, construction equipment, and hydraulic and pneumatic systems.

Reference part number H2.5X68 when ordering; the item is sold individually. Unit weight is approximately 1.36 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
H2.5X68
Description
2.5MM CS X 68MM ID BLACK BUNA 70D
Actual Outside Diameter
73 mm (2.87 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
68 mm (2.677 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity