Mutual Screw & Supply

0.139" CS X 8.984" ID Buna-N Nitrile O-Rings | AS568-272 | Dash 272 | 70 Durometer | Black (35 / Pkg.)

0.139" CS X 8.984" ID Buna-N Nitrile O-Rings | AS568-272 | Dash 272 | 70 - Main image
$37.21 $50.28 In stock

Buna-N Nitrile o-rings in AS568-272, 8.984" inner diameter by 0.139" cross-section. Service range -40°F to +250°F (-40°C to +121°C). Also known as NBR, Buna-N, Chemigum, Hycar, Perbunan.

Specifications

  • Product type: O-Ring
  • Material: Buna-N Nitrile
  • AS568 dash size: 272
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 8.984" (228.19 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 35 per package
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.4 / 5 · 5 reviews)

Violet ★★★★★

I needed a large o-ring for a hydraulic cylinder rebuild, and the 70 durometer stiffness feels perfect for the seal I'm replacing. These fit snugly into the groove and the black rubber has no visible flash or imperfections across the pack.

Daniel L. ★★★★★

Had to replace a worn-out seal on an old hydraulic cylinder and these AS568-272 o-rings fit perfectly with their 8.984-inch inner diameter. The 70 durometer rubber feels dense enough to hold pressure without being too stiff to install.

Leo T. ★★★★★

The 8.9-inch inner diameter makes this a perfect fit for the big flange I needed to seal on a pump housing. The 70 durometer is exactly right—firm enough to hold pressure but still easy to work into the groove.