2.5MM CS X 124MM ID BLACK BUNA 70D

Buna-N O-Ring, 2.5 x 124 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:
H2.5X124
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Product Specification

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H2.5X124 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 124 mm (4.882 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 129 mm (5.08 in). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against water, many alcohols, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or strong acids will shorten service life.

It sees regular use in automotive, agricultural equipment, and hydraulic and pneumatic systems.

This item is sold individually under part number H2.5X124. Unit weight is approximately 2.5 g. Review your operating media and conditions against this specification before 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
H2.5X124
Description
2.5MM CS X 124MM ID BLACK BUNA 70D
Actual Outside Diameter
129 mm (5.08 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
124 mm (4.882 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity