Mutual Screw & Supply

0.139" CS X 5.484" ID Buna-N Nitrile O-Rings | AS568-254 | Dash 254 | 70 Durometer | Black (80 / Pkg.)

0.139" CS X 5.484" ID Buna-N Nitrile O-Rings | AS568-254 | Dash 254 | 70 - Main image
$35.11 $52.4 In stock

Buna-N Nitrile o-rings in AS568-254, 5.484" 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: 254
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 5.484" (139.29 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 80 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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

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Customer Reviews (4.8 / 5 · 5 reviews)

Eli W. ★★★★★

These seals fit perfectly on the hydraulic cylinder I rebuilt, and the -40°F rating gives me peace of mind for winter use. The 70 durometer feels firm yet pliable, and the 80-pack means I have spares for the next job.

Aurora ★★★★★

The 70 durometer is perfect for my application—not too stiff, not too soft. These Buna-N rings seated easily in the grooves and sealed the first time. Glad I bought the 80-pack so I have spares for future repairs.

Julian ★★★★★

Installed these on my hydraulic press and the 70-durometer rubber seals tight with no leaks. For the price of an 80-pack I can keep plenty of spares on hand.