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70 Durometer Buna-N O-Ring, Inch OD, 1-1/4 Inch ID, 0.10 Inch Width

Description & Features

Rated at 70 durometer, this Buna-N O-ring is a standard choice for hydraulic and industrial sealing applications where resistance to petroleum-based fluids, oils, and fuels is required. With a nominal 1-1/4 inch ID and 1-7/16 inch OD, actual dimensions of 1.237 inch ID and 1.443 inch OD, and a 3/32 inch nominal width (0.103 inch actual), the 70 Durometer Buna-N O-Ring, Inch OD, 1-1/4 Inch ID, 0.10 Inch Width seats reliably in standard AN/MS dash -124 grooves.

The Buna-N compound handles a temperature range of -40°F to 240°F, making it suitable for a broad range of hydraulic cylinders, pumps, valves, and fluid fittings. Manufactured by Hercules Sealing Products and cataloged under dash size -124, this O-ring is packaged in quantities of 20.

SKU: A-124

Supplier Part Number (MPN): 568-124

Alternate Part Numbers: C1CD80, MI-08740362, MINO-00407X90362

Specifications

Brand HERCULES® SEALING PRODUCTS	Color Black	Cross Section Shape Round	Dash Size 124	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 (3)

Question by: Connie W on May 4, 2025, 12:01 PM

these come in a pack of 20, right? just wanna make sure before i order cause i need enough to do a full seal kit rebuild on a couple cylinders

Answer by: Customer Support on May 6, 2025, 11:25 AM

each order ships as a pack of 20 o-rings. For a multi-cylinder rebuild, that quantity tends to go quick, so worth ordering accordingly if you've got several units to work through.

Question by: Steve B on May 26, 2025, 7:05 AM

Trying to match up an AN dash -124 groove here, is this the right O-ring size or am I gonna be fighting it?

Answer by: Customer Support on May 27, 2025, 10:32 AM

For an AN/MS dash -124 gland, this one is the matching dash size and it’s called out as seating reliably in standard -124 grooves. Dimensions are 1.237 inch actual ID, 1.443 inch actual OD, and 0.103 inch actual width, with nominal 1-1/4 inch ID and 1-7/16 inch OD.

Question by: Jerry M on Sep 20, 2025, 5:30 PM

I need an o-ring that can handle hydraulic fluid, will this one work okay?

Answer by: Customer Support on Sep 22, 2025, 3:40 PM

This 70 Durometer Buna-N O-ring is a standard choice for sealing applications involving petroleum-based fluids, oils, and fuels, so it should be suitable for your hydraulic fluid application.

70 Durometer Buna-N O-Ring, Inch OD, 1-1/4 Inch ID, 0.10 Inch Width

Description & Features

Specifications

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Product Questions & Answers (3)