Mutual Screw & Supply

0.103" CS X 2.174" ID Buna-N Nitrile O-Rings | AS568-139 | Dash 139 | Metal Detectable | 70 Durometer (55 / Pkg.)

0.103" CS X 2.174" ID Buna-N Nitrile O-Rings | AS568-139 | Dash 139 | Metal - Main image
$36.42 $51.29 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
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Metal detectable: Yes
  • Pack quantity: 55 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)

Jacob P. ★★★★★

Bought a pack for a pneumatic cylinder rebuild, and the 70 durometer feel is just right—soft enough to seat well but firm enough to hold pressure. All fifty-five fit perfectly, no issues. Exactly what I needed.

Jacob C. ★★★★★

I was worried about plastic o-rings failing again in a hot oil line, but these nitrile ones are rated up to 250°F, so they've held up perfectly this week. The 70 durometer hardness feels solid, and having 55 in the pack means I've got spares for the next two rebuilds.

Mia Q. ★★★★★

Exactly 55 pieces in the bag, which is perfect for a full rebuild kit. The 70 durometer feels firm but not brittle, and they seat nicely in the groove without any distortion.