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70 Durometer Buna-N O-Ring, Inch OD, 1-1/4 Inch ID, 0.07 Inch Width

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Description & Features

This 70 Durometer Buna-N O-Ring offers reliable sealing performance in a wide range of industrial applications. Constructed from durable 70 Durometer Buna-N, it provides excellent resistance to oil, water, and other common fluids.

With a nominal ID of 1-1/4 inches and a nominal OD of 1-3/8 inches, this O-ring is designed to fit standard size grooves and provide a tight, leak-free seal. Actual dimensions are 1.239 inch ID and 1.379 inch OD, with a width of 0.07 inch. It is suitable for use in temperatures ranging from -40°F to 240°F.

SKU: A-026

Supplier Part Number (MPN): 568-026

Alternate Part Numbers: 2-026/N70, C1CD31, MI-08740320, MINO-00407X90320

Specifications

Brand
HERCULES® SEALING PRODUCTS
Color
Black
Cross Section Shape
Round
Dash Size
26
Durometer
70A
Inside Diameter
1-1/4 in
Material
Buna-N
Series
568 Series
Suitable For Use With
Hydraulic Cylinders
System of Measurement
Imperial

Product Questions & Answers (2)

Question by: Denise W on Jun 29, 2025, 11:21 AM
these come in a pack of 50, right? just want to make sure before i order -- got a few machines that go through o-rings pretty regular and buying singles gets old real fast
Answer by: Customer Support on Jul 1, 2025, 10:29 AM
they're sold in packs of 50. For anyone running equipment that chews through seals on a regular basis, stocking up at that quantity makes a lot more sense than sourcing them one at a time.
Question by: Curt P on Nov 4, 2025, 8:01 AM
trying to match up an old -026 o-ring, is this the same dash size and what are the real measurements?
Answer by: Customer Support on Nov 6, 2025, 6:52 AM
For a -026 dash size match, you are in the right spot. The nominal size is 1-1/4 inch ID and 1-3/8 inch OD, and the actual measured dimensions are 1.239 inch ID, 1.379 inch OD, with a 0.07 inch cross section (about 1/16 inch).

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