3.5MM CS X 340MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 x 340 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:
H3.5X340
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Product Specification

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This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 340 mm (13.386 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 347 mm (13.66 in), catalogued under part number H3.5X340. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

It resists petroleum-based oils, water, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or ketones.

It sees regular use in general industrial maintenance, automotive, and agricultural equipment.

Order part number H3.5X340, sold individually. Unit weight is approximately 12.68 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
H3.5X340
Description
3.5MM CS X 340MM ID BLACK BUNA 70D
Actual Outside Diameter
347 mm (13.66 inch)
Actual Cross Section
3.5 mm (0.138 inch)
Actual Inside Diameter
340 mm (13.386 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity