Mutual Screw & Supply

0.139" CS X 1.234" ID Buna-N Nitrile O-Rings | AS568-218 | Dash 218 | 70 Durometer | Black (500 / Pkg.)

0.139" CS X 1.234" ID Buna-N Nitrile O-Rings | AS568-218 | Dash 218 | 70 - Main image
$35.44 $53.69 In stock

Buna-N Nitrile o-rings in AS568-218, 1.234" 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: 218
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 1.234" (31.34 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 500 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)

Thomas ★★★★★

The 1.234" inner diameter fit perfectly on my hydraulic fitting, sealing tight on the first try. I’ve used cheaper o-rings before that cracked in the cold, but these handled a sub-zero morning without getting brittle.

Mia Q. ★★★★★

The 70 durometer hardness is exactly what I needed for a firm seal on my hydraulic fittings. The entire pack of 500 arrived well-packaged and the rubber feels durable enough to handle the temperature range. I've already used a dozen and they seat perfectly without any leaks.

Claire ★★★★★

The 1.234" inner diameter fit perfectly on my hydraulic cylinder, and the -40°F temperature rating gives me confidence for outdoor winter use. I've already ordered a second pack for spares since these o-rings seal so well under pressure.