3MM CS X 124MM ID BLACK BUNA 70D

Buna-N O-Ring, 3 x 124 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:
H3X124
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Product Specification

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Part number H3X124 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 124 mm (4.882 in), a cross section of 3 mm (0.118 in), and an outside diameter of 130 mm (5.12 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, economical choice for high-volume maintenance programs. It resists many alcohols, water, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in automotive brake fluid or ozone and direct sunlight.

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

Reference part number H3X124 when ordering; the item is sold individually. Unit weight is approximately 3.4875 g. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Item
H3X124
Description
3MM CS X 124MM ID BLACK BUNA 70D
Actual Outside Diameter
130 mm (5.12 inch)
Actual Cross Section
3 mm (0.118 inch)
Actual Inside Diameter
124 mm (4.882 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity