Mutual Screw & Supply

0.139" CS X 3.734" ID Buna-N Nitrile O-Rings | AS568-240 | Dash 240 | 90 Durometer (125 / Pkg.)

0.139" CS X 3.734" ID Buna-N Nitrile O-Rings | AS568-240 | Dash 240 | 90 - Main image
$35.39 $52.05 In stock

Buna-N Nitrile o-rings in AS568-240, 3.734" 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: 240
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.734" (94.84 mm)
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 125 per package
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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 (5.0 / 5 · 5 reviews)

Hannah ★★★★★

The -40°F to +250°F range is exactly why I grabbed these for a outdoor hydraulic line that sees brutal winter temps. The 90 durometer feels stiff enough to keep their shape under pressure, and a full 125 count means I've got spares for the next several repairs.

Joseph U. ★★★★★

The 90 durometer feels just right for our high-pressure pneumatic valves, and the -40°F temp range gave me confidence for the cold storage room install. Sealed up on the first try with no leaks.

Carter ★★★★★

These fit perfectly on the hydraulic cylinder I was rebuilding. The 90 durometer material holds up well under pressure without feeling brittle.