3.5MM CS X 49MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 x 49 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:
H3.5X49
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Product Specification

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H3.5X49 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 49 mm (1.929 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 56 mm (2.2 in). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) offers strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. This material stands up to many alcohols, hydraulic fluids, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

Typical settings include construction equipment, automotive, and agricultural equipment.

Order part number H3.5X49, sold individually. Unit weight is approximately 1.9539 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
H3.5X49
Description
3.5MM CS X 49MM ID BLACK BUNA 70D
Actual Outside Diameter
56 mm (2.2 inch)
Actual Cross Section
3.5 mm (0.138 inch)
Actual Inside Diameter
49 mm (1.929 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity