70 Durometer Buna-N O-Ring, Inch OD, 7/8 Inch ID, 0.07 Inch Width

Actual I.D.
0.86
Actual O.D.
1.00
Actual Width
0.07 in
Dash Size
-020
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Pack Size
1.00
UOM
EA
Nominal I.D. (in)
7/8
Nominal O.D.
1
Nominal Width
1/16
Package Qty.
50
Supplier Part Number
568-020
Alternate Part Numbers
Alternate Part Number 568-020, Alternate Part Number C1CD24, Alternate Part Number FMC515-1836-020, Alternate Part Number H90020, Alternate Part Number MI-08740314, Alternate Part Number MINO-00407X90314
Product Weight
0.01 lbs

Product Questions & Answers

got an old -020 o-ring i’m swapping out. is this the right dash size and what are the actual measurements on it?
Question by: Merle M on Nov 2, 2025, 6:04 AM
For a dash size -020, this one matches that designation and is listed with an actual inside diameter of 0.864 inch, an actual outside diameter of 1.004 inch, and an actual width of 0.07 inch.
Answer by: Customer Support on Nov 3, 2025, 2:03 PM
does this o-ring work down to freezing temps or below? got some equipment that sees some real cold mornings
Question by: Rod B on May 27, 2025, 7:35 AM
Buna-N at 70 durometer handles a range from negative 40 degrees Fahrenheit up to 240 degrees Fahrenheit, so cold mornings are well within what this material can take. As long as your application stays inside that window, you should be fine.
Answer by: Customer Support on May 28, 2025, 10:29 AM
trying to match up an old -020 o-ring, is this one the right dash size and how big is it really
Question by: Earl B on Apr 6, 2025, 9:46 PM
It is a dash size -020 Buna-N o-ring, 70 durometer. The nominal size is 7/8 inch ID, 1 inch OD, and 1/16 inch width, and the actual measured dimensions are about 0.864 inch ID, 1.004 inch OD, and 0.07 inch width.
Answer by: Customer Support on Apr 8, 2025, 6:09 AM

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