Mutual Screw & Supply

0.139" CS X 3.609" ID HNBR O-Rings | AS568-239 | Dash 239 | 80 Durometer (14 / Pkg.)

0.139" CS X 3.609" ID HNBR O-Rings | AS568-239 | Dash 239 | 80 Durometer (14 / - Main image
$30.14 $50.24 In stock

HNBR o-rings in AS568-239, 3.609" 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: 239
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.609" (91.67 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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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Ella ★★★★★

These fit perfectly in the hydraulic cylinder on my old press, and the 300°F temp rating gives me peace of mind during heavy use. The 80 durometer feels firm and durable, exactly what I needed.

Ella ★★★★★

The 0.139" cross-section on these HNBR o-rings fits perfectly in my Parker 2-bolt flange groove where standard nitrile was too loose. They've held up through several heat cycles up to 250°F without any hardening or cracking.

Grace ★★★★★

The 3.609" inner diameter was exactly what I needed for a stubborn hydraulic repair, and the HNBR material handles the heat without issue. Installed a few days ago and they’re sealing perfectly under pressure.