Mutual Screw & Supply

0.103" CS X 2.174" ID Buna-N Nitrile O-Rings | AS568-139 | Dash 139 | 70 Durometer | Black (400 / Pkg.)

0.103" CS X 2.174" ID Buna-N Nitrile O-Rings | AS568-139 | Dash 139 | 70 - 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: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 400 per package
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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)

Adam ★★★★★

Finally, an o-ring that actually fits the AS568-139 spec without being too stiff or too squishy. The 0.103" cross-section seats perfectly in my hydraulic fittings, and the black nitrile has held up fine through a few hot cycles. Ordered the 400-pack so I shouldn't run out for years.

Christopher ★★★★★

The 70-durometer hardness is perfect for my hydraulic cylinder rebuild; they seated firmly without any deformation. With 400 in a pack, I've got plenty left for future projects.

Jacob E. ★★★★★

Installed one of these o-rings on a fuel line fitting and the 70-durometer hardness gripped perfectly without deforming. The 0.103-inch cross-section is exactly what I needed for a snug seal in a high-temp application.