2.5MM CS X 108MM ID BLACK BUNA 70D

Buna-N O-Ring, 2.5 x 108 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:
H2.5X108
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Product Specification

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Part number H2.5X108 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 108 mm (4.252 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 113 mm (4.45 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. This material stands up to greases and lubricants, petroleum-based oils, and hydraulic fluids. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

Common environments for this compound include construction equipment, general industrial maintenance, and hydraulic and pneumatic systems.

Reference part number H2.5X108 when ordering; the item is sold individually. Unit weight is approximately 2.08 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Item
H2.5X108
Description
2.5MM CS X 108MM ID BLACK BUNA 70D
Actual Outside Diameter
113 mm (4.45 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
108 mm (4.252 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity