3.55MM CS X 25MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.55 x 25 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:
H3.55X25
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 25 mm (0.984 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 32.1 mm (1.26 in), catalogued under part number H3.55X25. It delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for low compression set under sustained load, strong abrasion and tear resistance. Expect good resistance to many alcohols, water, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or automotive brake fluid.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, fluid power, and agricultural equipment.

Reference part number H3.55X25 when ordering; the item is sold individually. Unit weight is approximately 1.0916 g. Check the compound against your process media, pressure and temperature before committing to a design.
Item
H3.55X25
Description
3.55MM CS X 25MM ID BLACK BUNA 70D
Actual Outside Diameter
32.1 mm (1.26 inch)
Actual Cross Section
3.55 mm (0.14 inch)
Actual Inside Diameter
25 mm (0.984 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity