2.5MM CS X 6.5MM ID BLACK BUNA 70D

Buna-N O-Ring, 2.5 x 6.5 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:
H2.5X6.5
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Product Specification

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Part number H2.5X6.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 6.5 mm (0.256 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 11.5 mm (0.45 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against many alcohols, water, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) delivers strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Common environments for this compound include construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

Reference part number H2.5X6.5 when ordering; the item is sold individually. Unit weight is approximately 0.1739 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
H2.5X6.5
Description
2.5MM CS X 6.5MM ID BLACK BUNA 70D
Actual Outside Diameter
11.5 mm (0.45 inch)
Actual Cross Section
2.5 mm (0.098 inch)
Actual Inside Diameter
6.5 mm (0.256 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity