3.1MM CS X 59.4MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.1 x 59.4 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:
H3.1X59.4
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Product Specification

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APG stocks the H3.1X59.4, a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 59.4 mm (2.339 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 65.6 mm (2.58 in). An o-ring compresses into its gland to block fluid or gas migration across a joint. The catalog record notes: Metric O-RING, JIS G60.

The compound resists many alcohols, greases and lubricants, and hydraulic fluids. Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ketones or automotive brake fluid.

Typical settings include agricultural equipment, construction equipment, and automotive.

Reference part number H3.1X59.4 when ordering; the item is sold individually. Unit weight is approximately 1.8253 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
H3.1X59.4
Description
3.1MM CS X 59.4MM ID BLACK BUNA 70D
Actual Outside Diameter
65.6 mm (2.58 inch)
Actual Cross Section
3.1 mm (0.122 inch)
Actual Inside Diameter
59.4 mm (2.339 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity