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70 Durometer Buna-N O-Ring, Inch OD, 1-1/8 Inch ID, 0.14 Inch Width

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Description & Features

This 70 Durometer Buna-N O-Ring offers reliable sealing performance in a wide range of hydraulic applications. Constructed from durable Buna-N (Nitrile) rubber, this O-ring provides excellent resistance to oil, fuels, and many common industrial fluids. It maintains its sealing properties in temperatures ranging from -40°F to 240°F.

With a nominal ID of 1-1/8 inches and a nominal OD of 1-3/8 inches, this O-ring conforms to the -216 dash size standard. Actual dimensions are 1.109 inch ID, 1.387 inch OD, and 0.139 inch width. Each package contains 20 O-rings.

SKU: A-216

Supplier Part Number (MPN): 568-216

Alternate Part Numbers: C1CE65, H90216, MI-08740422, MINO-00407X90422

Specifications

Brand
HERCULES® SEALING PRODUCTS
Color
Black
Cross Section Shape
Round
Dash Size
216
Durometer
70A
Inside Diameter
1-1/8 in
Material
Buna-N
Series
568 Series
Suitable For Use With
Hydraulic Cylinders
System of Measurement
Imperial

Product Questions & Answers (2)

Question by: Neal M on Feb 18, 2026, 7:49 PM
Reckon these'll hold up alright against regular hydraulic oil?
Answer by: Customer Support on Feb 20, 2026, 12:49 PM
This 70 Durometer Buna-N O-ring offers good resistance to oil, fuels, and common industrial fluids, so it should work well in hydraulic applications. It's made from durable Buna-N (Nitrile) rubber.
Question by: Rick A on Sep 11, 2025, 12:42 PM
trying to match up an old -216 o-ring. are the real measurements on this one 1.109 id and 1.387 od?
Answer by: Customer Support on Sep 12, 2025, 1:39 PM
For dash size -216, the actual dimensions for this ring are 1.109 inch ID, 1.387 inch OD, and 0.139 inch width, with nominal sizes listed as 1-1/8 inch ID, 1-3/8 inch OD, and 1/8 inch width.

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