Mutual Screw & Supply

0.139" CS X 2.109" ID Buna-N Nitrile O-Rings | AS568-227 | Dash 227 | 50 Durometer (100 / Pkg.)

0.139" CS X 2.109" ID Buna-N Nitrile O-Rings | AS568-227 | Dash 227 | 50 - Main image
$37.62 $54.52 In stock

Buna-N Nitrile o-rings in AS568-227, 2.109" 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: 227
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 2.109" (53.57 mm)
  • Durometer: 50 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 100 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)

James ★★★★★

The soft 50 durometer compound makes these seat perfectly in a shallow groove without any extra muscle, and the -40°F rating gives me confidence for my outdoor hydraulic lines this winter. Sorted through the whole bag and every one of the 100 rings held its round shape with no flash or deformation.

Penelope I. ★★★★★

The seal on my hydraulic cylinder stopped leaking after I swapped to these 2.109" ID o-rings. They handle the heat from my shop compressor just fine, and the 50 durometer hardness gives just enough flexibility without crushing.

Stella L. ★★★★☆

The packaging had exactly 100 rings, and the 50 durometer hardness is noticeably more forgiving than harder seals I've used—easy to seat in a groove without tweezers. They’ve held up fine so far in a mild hydraulic setup, though I haven’t pushed them near the 250°F limit yet.