Mutual Screw & Supply

0.21" CS X 3.475" ID HNBR O-Rings | AS568-341 | Dash 341 | 80 Durometer (10 / Pkg.)

0.21" CS X 3.475" ID HNBR O-Rings | AS568-341 | Dash 341 | 80 Durometer (10 / - Main image
$35.71 $52.52 In stock

HNBR o-rings in AS568-341, 3.475" inner diameter by 0.21" 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: 341
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 3.475" (88.27 mm)
  • Durometer: 80 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 10 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)

Sebastian Y. ★★★★★

These fit my hydraulic cylinder perfectly and the 80 durometer feels plenty tough. The -40°F to +300°F range covers everything I throw at them, so I've already ordered another pack.

Madison ★★★★★

I needed a reliable seal for a high-temp pneumatic application, and these HNBR rings handled the 280°F cycles without any degradation. The 80 durometer feels solid but still compressible enough for a tight fit.

Charlotte S. ★★★★★

These sealed perfectly on my hydraulic cylinder that sees constant 250°F oil. The 80 durometer feels noticeably firmer than standard Buna-N, and they haven't leaked a drop after two weeks of hard use.