3.1MM CS X 119.4MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.1 x 119.4 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:
H3.1X119.4
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Product Specification

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The H3.1X119.4 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 119.4 mm (4.701 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 125.6 mm (4.94 in). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Source specification: Metric O-RING, JIS G120.

As a material, Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. This material stands up to water, propane and butane, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound.

Typical settings include construction equipment, automotive, and fluid power.

Order part number H3.1X119.4, sold individually. Unit weight is approximately 3.5896 g. Review your operating media and conditions against this specification before installation.
Item
H3.1X119.4
Description
3.1MM CS X 119.4MM ID BLACK BUNA 70D
Actual Outside Diameter
125.6 mm (4.94 inch)
Actual Cross Section
3.1 mm (0.122 inch)
Actual Inside Diameter
119.4 mm (4.701 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity