3.1MM CS X 114.4MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.1 x 114.4 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:
H3.1X114.4
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Product Specification

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H3.1X114.4 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 114.4 mm (4.504 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 120.6 mm (4.75 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. This item is further identified as Metric O-RING, JIS G115.

This material stands up to water, propane and butane, and greases and lubricants. Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or automotive brake fluid call for a different compound.

You will find this material specified across construction equipment, hydraulic and pneumatic systems, and fluid power.

Order part number H3.1X114.4, sold individually. Unit weight is approximately 3.3436 g. Review your operating media and conditions against this specification before installation.
Item
H3.1X114.4
Description
3.1MM CS X 114.4MM ID BLACK BUNA 70D
Actual Outside Diameter
120.6 mm (4.75 inch)
Actual Cross Section
3.1 mm (0.122 inch)
Actual Inside Diameter
114.4 mm (4.504 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity