Mutual Screw & Supply

0.21" CS X 2.225" ID HNBR O-Rings | AS568-331 | Dash 331 | 80 Durometer (14 / Pkg.)

0.21" CS X 2.225" ID HNBR O-Rings | AS568-331 | Dash 331 | 80 Durometer (14 / - Main image
$40.03 $54.09 In stock

HNBR o-rings in AS568-331, 2.225" 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: 331
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 2.225" (56.52 mm)
  • Durometer: 80 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 14 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 (5.0 / 5 · 5 reviews)

Penelope K. ★★★★★

The heat range on these is the big win for me — the -40°F to +300°F spec covers everything I run, and the 80 durometer feels stiff enough for a snug seal without being brittle. Dropped one on the garage floor and it held its shape perfectly.

Ellie ★★★★★

The 0.21" cross-section on these fits snugly in my hydraulic fitting, and the 80 durometer feels just right for the pressure. I used them in a high-temp application, and they sealed perfectly without any softening. Exactly what I needed for this size.

Chloe A. ★★★★★

The -40°F to +300°F temperature range was exactly what I needed for my steam application, and the 80 durometer feels noticeably more durable than the standard Buna-N rings I used before. These Houston-polyurethane-based seals installed easily and haven't leaked a drop after a week of use.