Mutual Screw & Supply

0.139" CS X 4.484" ID Buna-N Nitrile O-Rings | AS568-246 | Dash 246 | 70 Durometer | Black (125 / Pkg.)

0.139" CS X 4.484" ID Buna-N Nitrile O-Rings | AS568-246 | Dash 246 | 70 - Main image
$33.12 $55.2 In stock

Buna-N Nitrile o-rings in AS568-246, 4.484" 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: 246
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 4.484" (113.89 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 125 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 (4.6 / 5 · 5 reviews)

James S. ★★★★★

The 70 durometer rating gave these o-rings just the right firmness for my hydraulic repair job, sealing tightly without any squeezing issues. I’ve worked with nitrile before, and this batch feels consistently well-molded across the whole package.

Andrew Q. ★★★★★

The 70-durometer hardness is spot on for my application, and the -40°F to +250°F rating gives me peace of mind for outdoor equipment. Took a few to check the 4.484" ID against my housing and they seated snug without any forcing.

Hazel ★★★★★

These fit perfectly in my hydraulic cylinder, the 70 durometer feels just right for the pressure range. I've had them in service for a week with oil temps around 180°F and no leaks at all, the -40°F rating gives me peace of mind for winter too.