1.8MM CS X 4.87MM ID BLACK BUNA 70D

Buna-N O-Ring, 1.8 x 4.87 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:
H1.8X4.87
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Product Specification

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Part number H1.8X4.87 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 4.87 mm (0.192 in), a cross section of 1.8 mm (0.071 in), and an outside diameter of 8.47 mm (0.33 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists propane and butane, petroleum-based oils, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or ozone and direct sunlight call for a different compound.

Common environments for this compound include general industrial maintenance, hydraulic and pneumatic systems, and fluid power.

Order part number H1.8X4.87, sold individually. Unit weight is approximately 0.0647 g. Review your operating media and conditions against this specification before installation.
Item
H1.8X4.87
Description
1.8MM CS X 4.87MM ID BLACK BUNA 70D
Actual Outside Diameter
8.47 mm (0.33 inch)
Actual Cross Section
1.8 mm (0.071 inch)
Actual Inside Diameter
4.87 mm (0.192 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity