3MM CS X 145MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 145 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:
H3X145
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Product Specification

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APG stocks the H3X145, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 145 mm (5.709 in), a cross section of 3 mm (0.118 in), and an outside diameter of 151 mm (5.94 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Expect good resistance to propane and butane, greases and lubricants, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.

Typical settings include automotive, construction equipment, and hydraulic and pneumatic systems.

This item is sold individually under part number H3X145. Unit weight is approximately 4.088 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H3X145
Description
3MM CS X 145MM ID BLACK BUNA 70D
Actual Outside Diameter
151 mm (5.94 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
145 mm (5.709 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity