Mutual Screw & Supply

0.139" CS X 0.609" ID HNBR O-Rings | AS568-208 | Dash 208 | 80 Durometer (100 / Pkg.)

0.139" CS X 0.609" ID HNBR O-Rings | AS568-208 | Dash 208 | 80 Durometer (100 / - Main image
$36.65 $59.11 In stock

HNBR o-rings in AS568-208, 0.609" 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: 208
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 0.609" (15.47 mm)
  • Durometer: 80 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 100 per package
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Standard Shipping · United States: $0.00

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)

Claire P. ★★★★★

The 80 durometer on these HNBR rings is noticeably firmer than standard Buna-N, which is exactly what I needed for a high-temp application. They seated perfectly in the groove and the pack of 100 gives me plenty of spares for future repairs.

Julian H. ★★★★★

Had to replace some old seals in a hot oil system and these HNBR rings handled the 250°F operating temp without issue. The 80 durometer feels stiffer than what I pulled out, but they're holding pressure perfectly so far.

Miles ★★★★★

Put these in a high-temp hydraulic fitting on a press that runs near 250°F, and they've held up perfectly without any softening. The 80 durometer feels just right—stiff enough to stay seated but not so hard that they crack during installation.