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2.5MM CS X 165MM ID BLACK BUNA 70D

Buna-N O-Ring, 2.5 x 165 mm, 70A, Black, -40 to 250°F

Status
Out of Stock
Est. Ship Date
22 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:
H2.5X165

Product Specification

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The H2.5X165 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 165 mm (6.496 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 170 mm (6.69 in). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists hydraulic fluids, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.

It sees regular use in construction equipment, general industrial maintenance, and automotive.

Order part number H2.5X165, sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
H2.5X165
Description
2.5MM CS X 165MM ID BLACK BUNA 70D
Actual Outside Diameter
170 mm (6.69 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
165 mm (6.496 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity