Mutual Screw & Supply

0.139" CS X 1.234" ID Viton FKM O-Rings | AS568-218 | Dash 218 | Square Profile | 70 Durometer (40 / Pkg.)

0.139" CS X 1.234" ID Viton FKM O-Rings | AS568-218 | Dash 218 | Square Profile - Main image
$37.75 $54.71 In stock

Viton FKM o-rings in AS568-218, 1.234" inner diameter by 0.139" cross-section. Service range -15°F to +400°F (-26°C to +204°C). Also known as FKM, Fluoroelastomer.

Specifications

  • Product type: O-Ring (Square Profile)
  • Material: Viton FKM
  • AS568 dash size: 218
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 1.234" (31.34 mm)
  • Durometer: 70 Shore A
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 40 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 (4.6 / 5 · 5 reviews)

William J. ★★★★★

Finally got around to replacing the old round-profile seals in my hydraulic press with these square ones, and they seat perfectly without rolling. The viton material handles the 200°F operating temperature without any swelling or hardening after a week of heavy use.

Richard ★★★★★

I'm using these square profile rings in a high-temp pneumatic fitting, and the 70 durometer feels just right for a snug seal without being too hard to install. They've held up perfectly under continuous 300°F exposure so far.

Emily G. ★★★★★

I’ve used these o-rings in a high-temp pump application, and they’ve held up perfectly against continuous exposure to aggressive fluids. The Viton material seems tougher than standard nitrile—no swelling or cracking after a month. Solid value for a 40-pack.