2.5MM CS X 73MM ID BLACK BUNA 70D

Buna-N O-Ring, 2.5 x 73 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:
H2.5X73
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 73 mm (2.874 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 78 mm (3.07 in), catalogued under part number H2.5X73. It compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Expect good resistance to petroleum-based oils, water, and hydraulic fluids. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or ketones.

Common environments for this compound include fluid power, general industrial maintenance, and agricultural equipment.

Reference part number H2.5X73 when ordering; the item is sold individually. Unit weight is approximately 1.418 g. Review your operating media and conditions against this specification before installation.
Item
H2.5X73
Description
2.5MM CS X 73MM ID BLACK BUNA 70D
Actual Outside Diameter
78 mm (3.07 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
73 mm (2.874 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity