5.7MM CS X 99.2MM ID BLACK BUNA 70D

Buna-N O-Ring, 5.7 x 99.2 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:
H5.7X99.2
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Product Specification

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Part number H5.7X99.2 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 99.2 mm (3.906 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 110.6 mm (4.35 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. This material stands up to hydraulic fluids, water, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or polar solvents call for a different compound.

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

H5.7X99.2 ships individually. Unit weight is approximately 10.248 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
H5.7X99.2
Description
5.7MM CS X 99.2MM ID BLACK BUNA 70D
Actual Outside Diameter
110.6 mm (4.35 inch)
Actual Cross Section
5.7 mm (0.224 inch)
Actual Inside Diameter
99.2 mm (3.906 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity