Mutual Screw & Supply

0.139" CS X 8.734" ID Buna-N Nitrile O-Rings | AS568-271 | Dash 271 | 70 Durometer | Black (40 / Pkg.)

0.139" CS X 8.734" ID Buna-N Nitrile O-Rings | AS568-271 | Dash 271 | 70 - Main image
$42.2 $57.03 In stock

Buna-N Nitrile o-rings in AS568-271, 8.734" 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: 271
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 8.734" (221.84 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 40 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 (4.8 / 5 · 5 reviews)

Miles ★★★★★

These 271-sized rings fit my air compressor manifold perfectly, the 70-durometer rubber feels flexible but sturdy when seating. Exactly what I needed to stop a slow pressure drop.

Robert ★★★★★

Had a small leak on an old hydraulic cylinder, and these 271s sealed it perfectly on the first try. The 70 durometer feels just right for high-pressure applications, and the temperature range covers everything I need.

Julian C. ★★★★★

Finally got the right fit for my hydraulic ram—the 8.734" ID matches exactly, and the 70 durometer feels firm but not brittle. Installed these without any trouble, and they sealed perfectly on the first try.