3.55MM CS X 19MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.55 x 19 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:
H3.55X19
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Product Specification

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The H3.55X19 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 19 mm (0.748 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 26.1 mm (1.03 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. It resists greases and lubricants, petroleum-based oils, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or ozone and direct sunlight are present.

Common environments for this compound include agricultural equipment, general industrial maintenance, and automotive.

Reference part number H3.55X19 when ordering; the item is sold individually. Unit weight is approximately 0.879 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
H3.55X19
Description
3.55MM CS X 19MM ID BLACK BUNA 70D
Actual Outside Diameter
26.1 mm (1.03 inch)
Actual Cross Section
3.55 mm (0.14 inch)
Actual Inside Diameter
19 mm (0.748 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity