Mutual Screw & Supply

0.139" CS X 1.234" ID HNBR O-Rings | AS568-218 | Dash 218 | 80 Durometer (60 / Pkg.)

0.139" CS X 1.234" ID HNBR O-Rings | AS568-218 | Dash 218 | 80 Durometer (60 / - Main image
$38.91 $58.95 In stock

HNBR o-rings in AS568-218, 1.234" 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: 218
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 1.234" (31.34 mm)
  • Durometer: 80 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 60 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)

Daniel A. ★★★★★

O-rings fit perfectly in a temperature cycling test I ran from -20°F to 250°F, no leaks or hardening. The 80 durometer feels just right for a static seal under moderate pressure.

Adam F. ★★★★★

Installed a set in a hydraulic press that sees steam cleaning daily, the 80 durometer holds up way better than the standard Buna-Ns I was using before. These HNBRs haven't hardened or cracked after a month of thermal cycling.

Leo ★★★★★

The -40°F to +300°F rating is exactly what I needed for a hydraulic line near the engine block, and the 80 durometer feels firm without being brittle. These seats are snug and haven’t leaked a drop in two weeks of daily use.