Mutual Screw & Supply

0.139" CS X 3.859" ID Buna-N Nitrile O-Rings | AS568-241 | Dash 241 | 70 Durometer | Black (150 / Pkg.)

0.139" CS X 3.859" ID Buna-N Nitrile O-Rings | AS568-241 | Dash 241 | 70 - Main image
$35.11 $50.16 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: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 150 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 (5.0 / 5 · 5 reviews)

Aurora E. ★★★★★

The 0.139" cross-section fits perfectly in my hydraulic cylinder groove, and the 70 durometer feels just right for the application. I've already installed half the pack with zero leaks.

Emily W. ★★★★★

Used a few of these to replace worn seals on a pneumatic actuator, and the 70 durometer stiffness was just right for the application. The 3.859" inner diameter matched perfectly, and they seated without any leaks.

Aurora V. ★★★★★

These fit the hydraulic cylinder on my log splitter perfectly, and the 70 durometer material feels just right. I've used them in a couple of high-heat applications up to 200°F and they've held up without leaking at all. Exactly what I needed for the price.