Mutual Screw & Supply

0.139" CS X 9.984" ID Buna-N Nitrile O-Rings | AS568-276 | Dash 276 | 70 Durometer | Black (35 / Pkg.)

0.139" CS X 9.984" ID Buna-N Nitrile O-Rings | AS568-276 | Dash 276 | 70 - Main image
$36.35 $53.46 In stock

Buna-N Nitrile o-rings in AS568-276, 9.984" 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: 276
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 9.984" (253.59 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 (5.0 / 5 · 5 reviews)

Sebastian ★★★★★

The 0.139" cross-section is exactly what I needed for a stubborn hydraulic seal, and the 70 durometer feels firm but still compresses into place without a fight. I've used them down in the low 20s outside and they haven't cracked. Solid buy for the money.

Penelope Y. ★★★★★

These seals fit perfectly on a large air compressor head I rebuilt last week. The 70 durometer rubber seated nicely without any distortion, and they handled the heat just fine during the first full test run.

John ★★★★★

I work on hydraulic cylinders that see a lot of heat and pressure, and these o-rings are holding up great even at 250°F. The 70 durometer gives just the right balance of sealing force and flexibility for the job.