Mutual Screw & Supply

0.139" CS X 0.859" ID HNBR O-Rings | AS568-212 | Dash 212 | 90 Durometer (50 / Pkg.)

0.139" CS X 0.859" ID HNBR O-Rings | AS568-212 | Dash 212 | 90 Durometer (50 / - Main image
$37.88 $54.12 In stock

HNBR o-rings in AS568-212, 0.859" inner diameter by 0.139" cross-section. Service range -40°F to +300°F (-40°C to +149°C). Also known as HSN, Highly Saturated Nitrile.

Specifications

  • Product type: O-Ring
  • Material: HNBR
  • AS568 dash size: 212
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 0.859" (21.82 mm)
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 50 per package
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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)

Christopher ★★★★★

Replaced the worn-out seals on a pneumatic cylinder and they seated perfectly in the groove—the 90 durometer feels plenty firm for the job. Nice to have the AS568-212 sizing spelled out so I didn't have to guess.

Chloe ★★★★★

The -40°F to +300°F range is exactly what I needed for a high-heat pump application, and the 90 durometer holds its shape nicely under compression. These 50-packs are my new go-to for any sealing job.

Sophia ★★★★★

These HNBR o-rings feel a lot tougher than the standard Buna-N ones I've used before, and the 90 durometer really locks in place without deforming. They fit perfectly on the hydraulic fitting I needed to repair, and the temperature range is exactly what my application requires.