3.5MM CS X 39MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 x 39 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:
H3.5X39
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Product Specification

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APG stocks the H3.5X39, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 39 mm (1.535 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 46 mm (1.81 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs and most widely specified general-purpose sealing elastomer. This material stands up to many alcohols, petroleum-based oils, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or polar solvents.

Typical settings include agricultural equipment, fluid power, and general industrial maintenance.

Order part number H3.5X39, sold individually. Unit weight is approximately 1.5689 g. 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
H3.5X39
Description
3.5MM CS X 39MM ID BLACK BUNA 70D
Actual Outside Diameter
46 mm (1.81 inch)
Actual Cross Section
3.5 mm (0.138 inch)
Actual Inside Diameter
39 mm (1.535 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity