Mutual Screw & Supply

0.103" CS X 2.174" ID Buna-N Nitrile O-Rings | AS568-139 | Dash 139 | 90 Durometer (300 / Pkg.)

0.103" CS X 2.174" ID Buna-N Nitrile O-Rings | AS568-139 | Dash 139 | 90 - Main image
$34.78 $54.35 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: 90 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 300 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 (4.2 / 5 · 5 reviews)

Emma ★★★★★

I needed o-rings that could handle both hot and cold without getting brittle, and these Buna-N ones have been perfect for sealing a hydraulic line on my tractor. The 90 durometer gives them a solid feel when compressed, and the 300-count pack means I've got plenty of spares for future repairs.

Madison K. ★★★★★

These came in a sealed pack of 300 which is exactly what I needed for a big rebuild. The 90 durometer hardness feels really sturdy, and the 2.174" ID fit snugly into the groove without any stretching issues.

Edward ★★★★☆

The dash 139 size fits perfectly on my hydraulic cylinder’s gland nut, and the 90 durometer provides a nice, firm seal without being too hard to install. Only minor gripe is the packaging could be a bit sturdier for storing leftover rings.