Mutual Screw & Supply

0.139" CS X 8.484" ID Buna-N Nitrile O-Rings | AS568-270 | Dash 270 | 70 Durometer | Black (40 / Pkg.)

0.139" CS X 8.484" ID Buna-N Nitrile O-Rings | AS568-270 | Dash 270 | 70 - Main image
$37.49 $55.96 In stock

Buna-N Nitrile o-rings in AS568-270, 8.484" 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: 270
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 8.484" (215.49 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 (5.0 / 5 · 5 reviews)

Andrew S. ★★★★★

These o-rings have a nice snug fit in the gland I needed, and the 70 durometer feels firm enough without being brittle. I bought them for a pneumatic cylinder rebuild, and the -40°F to +250°F range gives me confidence for the application.

Timothy Q. ★★★★★

The 8.484" inner diameter was spot-on for my hydraulic cylinder rebuild, and the 70 durometer feels durable enough for the pressure. They seated perfectly without any twisting during installation.

Jason N. ★★★★★

These fit perfectly on a large pneumatic actuator I was rebuilding. The 70 durometer feels just right for the application, and the -40°F to +250°F range gives me confidence it will hold up over time.