3MM CS X 118MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 118 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
1 Nov 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:
H3X118
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Product Specification

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Part number H3X118 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 118 mm (4.646 in), a cross section of 3 mm (0.118 in), and an outside diameter of 124 mm (4.88 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, strong abrasion and tear resistance. The compound resists many alcohols, hydraulic fluids, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with polar solvents or ketones.

It sees regular use in automotive, hydraulic and pneumatic systems, and agricultural equipment.

Reference part number H3X118 when ordering; the item is sold individually. Unit weight is approximately 3.404 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
H3X118
Description
3MM CS X 118MM ID BLACK BUNA 70D
Actual Outside Diameter
124 mm (4.88 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
118 mm (4.646 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity