Mutual Screw & Supply

0.21" CS X 5.725" ID HNBR O-Rings | AS568-354 | Dash 354 | 80 Durometer (7 / Pkg.)

0.21" CS X 5.725" ID HNBR O-Rings | AS568-354 | Dash 354 | 80 Durometer (7 / - Main image
$41.63 $57.82 In stock

HNBR o-rings in AS568-354, 5.725" 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: 354
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 5.725" (145.41 mm)
  • Durometer: 80 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 7 per package
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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)

Ryan H. ★★★★★

The -40°F to +300°F range is exactly what I needed for my outdoor equipment, and the 80 durometer feels plenty sturdy. Fit the groove perfectly on the first try, no wrestling needed.

Steven L. ★★★★★

The 0.21" cross-section seals perfectly in my hydraulic fitting where thinner rings always leaked. I've used them in a hot oil application reaching nearly 280°F and they haven't hardened or cracked like standard nitrile.

Sofia V. ★★★★★

The -40°F rating was the whole reason I grabbed these for a cold-weather hydraulic setup, and the 80 durometer feels firm enough to hold a seal without being a pain to squeeze into the groove. Fit the AS568-354 spec dead on.