3MM CS X 43MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 43 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:
H3X43
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Product Specification

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The H3X43 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 43 mm (1.693 in), a cross section of 3 mm (0.118 in), and an outside diameter of 49 mm (1.93 in). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs and most widely specified general-purpose sealing elastomer. This material stands up to hydraulic fluids, greases and lubricants, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ozone and direct sunlight.

Common environments for this compound include construction equipment, general industrial maintenance, and fluid power.

H3X43 ships individually. Unit weight is approximately 1.321 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Item
H3X43
Description
3MM CS X 43MM ID BLACK BUNA 70D
Actual Outside Diameter
49 mm (1.93 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
43 mm (1.693 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity