3.55MM CS X 112MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.55 x 112 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:
H3.55X112
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Product Specification

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H3.55X112 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 112 mm (4.409 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 119.1 mm (4.69 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, most widely specified general-purpose sealing elastomer. Expect good resistance to petroleum-based oils, greases and lubricants, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to polar solvents or ozone and direct sunlight will shorten service life.

Common environments for this compound include construction equipment, fluid power, and agricultural equipment.

This item is sold individually under part number H3.55X112. Unit weight is approximately 4.4648 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
H3.55X112
Description
3.55MM CS X 112MM ID BLACK BUNA 70D
Actual Outside Diameter
119.1 mm (4.69 inch)
Actual Cross Section
3.55 mm (0.14 inch)
Actual Inside Diameter
112 mm (4.409 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity