Mutual Screw & Supply

0.103" CS X 2.174" ID Buna-N Nitrile O-Rings | AS568-139 | Dash 139 | 50 Durometer (200 / Pkg.)

0.103" CS X 2.174" ID Buna-N Nitrile O-Rings | AS568-139 | Dash 139 | 50 - Main image
$44.03 $63.81 In stock

Buna-N Nitrile o-rings in AS568-139, 2.174" inner diameter by 0.103" 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: 139
  • Cross-section: 0.103" (2.62 mm)
  • Inner diameter: 2.174" (55.22 mm)
  • Durometer: 50 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 200 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 (4.4 / 5 · 5 reviews)

Olivia ★★★★★

Needed a batch of AS568-139s for a hydraulic repair job and these hit the spec dead-on—the 2.174" inner diameter seated perfectly in the groove. The 50 durometer gives them just enough give for a snug seal without fighting the install. At 200 per pack, I won't be rationing them for a while.

Joseph J. ★★★★★

The 50-durometer material is noticeably pliable, making these o-rings easier to seat than the harder ones I've used. They seated perfectly in my hydraulic fitting, and the 200-count box is great value for the price.

Elizabeth O. ★★★★★

Exactly the right fit for a Parker 8-1/2 O-ring boss I'm rebuilding—the 2.174" ID matches perfectly. Good quality Buna-N material that should handle the hydraulic oil and temperature swings without issue.