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1.8MM CS X 3.75MM ID BLACK BUNA 70D

Buna-N O-Ring, 1.8 x 3.75 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
23 Oct 2026
Material
Buna-N (Nitrile / NBR)
Dash Size
null
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
null
Nominal Inside Diameter
null
Nominal Outside Diameter
null
Unit of Measure
EA
SKU:
H1.8X3.75
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Product Specification

-
Part number H1.8X3.75 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 3.75 mm (0.148 in), a cross section of 1.8 mm (0.071 in), and an outside diameter of 7.35 mm (0.29 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. This material stands up to many alcohols, greases and lubricants, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or polar solvents will shorten service life.

Maintenance and OEM teams specify it across agricultural equipment, fluid power, and automotive.

Stocked as H1.8X3.75 and sold individually. Unit weight is approximately 0.058 g. Review your operating media and conditions against this specification before installation.
Item
H1.8X3.75
Description
1.8MM CS X 3.75MM ID BLACK BUNA 70D
Actual Outside Diameter
7.35 mm (0.29 inch)
Actual Cross Section
1.8 mm (0.071 inch)
Actual Inside Diameter
3.75 mm (0.148 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity