3.5MM CS X 25.7MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 x 25.7 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:
H3.5X25.7
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Product Specification

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Part number H3.5X25.7 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 25.7 mm (1.012 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 32.7 mm (1.29 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope. The catalog record notes: Metric O-RING, JIS P26.

Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The material holds up against many alcohols, propane and butane, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

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

Stocked as H3.5X25.7 and sold individually. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
H3.5X25.7
Description
3.5MM CS X 25.7MM ID BLACK BUNA 70D
Actual Outside Diameter
32.7 mm (1.29 inch)
Actual Cross Section
3.5 mm (0.138 inch)
Actual Inside Diameter
25.7 mm (1.012 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity