Mutual Screw & Supply

0.139" CS X 3.859" ID Buna-N Nitrile O-Rings | AS568-241 | Dash 241 | 50 Durometer (70 / Pkg.)

0.139" CS X 3.859" ID Buna-N Nitrile O-Rings | AS568-241 | Dash 241 | 50 - Main image
$38.58 $57.58 In stock

Buna-N Nitrile o-rings in AS568-241, 3.859" 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: 241
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.859" (98.02 mm)
  • Durometer: 50 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 70 per package
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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 (4.6 / 5 · 5 reviews)

Emma ★★★★★

These fit perfectly on the hydraulic cylinder I rebuilt, and the 50-durometer squish makes seating them in the groove a breeze. The -40°F rating is a huge plus since my equipment sits in an unheated shop all winter.

Kevin X. ★★★★★

The 50-durometer softness is perfect for a snug seal without needing to wrestle them into place. I’ve got a full 70-pack for spares, and the -40°F rating gives me peace of mind for winter storage.

Madison O. ★★★★★

My old engine gaskets finally gave up, and these AS568-241 o-rings fit the compressor perfectly with that 3.859" ID. The 50-durometer rubber seals into the groove nicely without being too stiff.