3.5MM CS X 145MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 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:
H3.5X145
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Product Specification

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APG stocks the H3.5X145, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 145 mm (5.709 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 152 mm (5.98 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and low compression set under sustained load. Expect good resistance to greases and lubricants, petroleum-based oils, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ketones.

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

Reference part number H3.5X145 when ordering; the item is sold individually. Unit weight is approximately 5.617 g. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H3.5X145
Description
3.5MM CS X 145MM ID BLACK BUNA 70D
Actual Outside Diameter
152 mm (5.98 inch)
Actual Cross Section
3.5 mm (0.138 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