Mutual Screw & Supply

0.21" CS X 4.725" ID HNBR O-Rings | AS568-350 | Dash 350 | 80 Durometer (7 / Pkg.)

0.21" CS X 4.725" ID HNBR O-Rings | AS568-350 | Dash 350 | 80 Durometer (7 / - Main image
$34.73 $54.26 In stock

HNBR o-rings in AS568-350, 4.725" 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: 350
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 4.725" (120.01 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)

Emma ★★★★★

The 0.21-inch cross-section fit perfectly into my pump housing, and the 80-durometer hardness feels solid. I've been running them at 250°F for two weeks with no leaks at all.

Mia ★★★★★

Installed these in a hydraulic press that sees some pretty high heat, and the HNBR material held up perfectly where standard nitrile would have cooked. The 80 durometer gives them just enough stiffness to stay seated without being a nightmare to install.

Abigail ★★★★★

Installed these on a pump handling hot oil, and the 80 durometer HNBR holds up perfectly at 300°F without softening. The 4.725" inner diameter fit my flange like a glove.