2.5MM CS X 99MM ID BLACK BUNA 70D

Buna-N O-Ring, 2.5 x 99 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:
H2.5X99
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Product Specification

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Part number H2.5X99 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 99 mm (3.898 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 104 mm (4.09 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. This material stands up to water, petroleum-based oils, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or ozone and direct sunlight will shorten service life.

Common environments for this compound include construction equipment, general industrial maintenance, and agricultural equipment.

Stocked as H2.5X99 and sold individually. Unit weight is approximately 1.955 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H2.5X99
Description
2.5MM CS X 99MM ID BLACK BUNA 70D
Actual Outside Diameter
104 mm (4.09 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
99 mm (3.898 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity