Mutual Screw & Supply

0.139" CS X 3.859" ID PTFE O-Rings | AS568-241 | Dash 241 | 24 Durometer (8 / Pkg.)

0.139" CS X 3.859" ID PTFE O-Rings | AS568-241 | Dash 241 | 24 Durometer (8 / - Main image
$37.78 $55.56 In stock

PTFE o-rings in AS568-241, 3.859" inner diameter by 0.139" cross-section. Service range -350°F to +500°F (-212°C to +260°C). Also known as Teflon, Polytetrafluoroethylene.

Specifications

  • Product type: O-Ring
  • Material: PTFE
  • AS568 dash size: 241
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 3.859" (98.02 mm)
  • Durometer: 24 Shore A
  • Temperature range: -350°F to +500°F (-212°C to +260°C)
  • Measurement type: Imperial
  • Pack quantity: 8 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 (4.8 / 5 · 5 reviews)

Stella ★★★★★

These PTFE o-rings held up perfectly in a high-temp application where standard rubber would have melted. The 500°F rating is no joke—installed them a few weeks ago and they're still sealing tight with zero deformation.

Richard ★★★★★

I was worried the 24 durometer would be too soft, but these PTFE o-rings seal perfectly in my hydraulic manifold. The -350°F to +500°F rating gives me confidence for extreme applications.

Isabella W. ★★★★★

Installed these in a cryogenic valve and they've held perfectly at -300°F without any cracking. The 24 durometer PTFE is way more flexible than I expected for a Teflon seal, yet still firm enough to keep its shape under pressure.