View Similar Products

General Purpose Oil-Resistant Buna-N O-Ring: Round, Black, 3.5 mm Actual Wd, 3 1/2 mm Nominal Wd, 29.7 mm Actual ID, 25 PK

Item # 412Z490

$9.90 Pack of 25

Product Specs

Cross Section Shape: Round
Color: Black
Actual Width: 3.5 mm
Nominal Width: 3 1⁄2 mm
Minimum Operating Temperature: -30 ° F
Maximum Operating Temperature: 250 ° F
Material: Buna-N
Actual ID: 29.7 mm
Nominal ID: 29 7⁄10 mm
Hardness Rating (Durometer): Medium
Durometer: 70 Shore A
Package Quantity: 25
Measurement System: Metric
Resistance Properties: Transmission Fluid Resistant; Hydraulic Fluid Resistant; Alkali Resistant; Acid Resistant; Petroleum Oil Resistant; Silicone Lubricant Resistant; Water Resistant
Actual OD: 36.7 mm
Application: Lawn & Garden; Automotive; Air-Powered Machines; Hydraulics; Connections; Machines; Sprayers; Engines; Faucets; Valves; Fluids; Gas
For Use With: Gas; Fluids; Hydraulics
Maximum ID Tolerance: 0.11 mm
Minimum ID Tolerance: -0.11 mm
Nominal OD: 36 7⁄10 mm
Pack Unit: PK
RoHS Compliant: Yes
Specifications Met: ASTM D2000; SAE J200

Compliance and Restrictions

Country Of Origin

  • China

About This Product

These General Purpose Oil-Resistant Buna-N O-Rings are metric. They have a round cross section shape, which is the standard shape for an O-ring for general purpose use. They are black and have a 3.5 mm actual width. They have a 3 1/2 mm nominal width and a 29.7 mm actual ID. They have a nominal ID of 29 7/10 mm. Pack of 25.

About General Purpose O-Rings

Take on a range of tasks such as sealing faucets, valves, and flanges with these multipurpose O-rings. They are available in different elastomers to provide the chemical resistances and physical properties needed for your application. All inch sizes conform to AS568 standards for dimensions and tolerances.

With excellent resistance to petroleum oils and gasoline, these Buna-N O-rings are a good choice for general use and low-pressure hydraulic and pneumatic seals. Buna-N, also known as nitrile rubber, is a strong, abrasion-resistant material that also offers good compression set resistance to minimize loss of resiliency.