3MM CS X 28.5MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 28.5 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:
H3X28.5
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Product Specification

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Ordered as H3X28.5, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 28.5 mm (1.122 in), a cross section of 3 mm (0.118 in), and an outside diameter of 34.5 mm (1.36 in). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) offers reliable performance in both static and dynamic service, strong abrasion and tear resistance. The material holds up against propane and butane, greases and lubricants, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Maintenance and OEM teams specify it across agricultural equipment, construction equipment, and hydraulic and pneumatic systems.

This item is sold individually under part number H3X28.5. Review your operating media and conditions against this specification before installation. 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
H3X28.5
Description
3MM CS X 28.5MM ID BLACK BUNA 70D
Actual Outside Diameter
34.5 mm (1.36 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
28.5 mm (1.122 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity