Mutual Screw & Supply

0.139" CS X 2.734" ID PTFE O-Rings | AS568-232 | Dash 232 | 23 Durometer (12 / Pkg.)

0.139" CS X 2.734" ID PTFE O-Rings | AS568-232 | Dash 232 | 23 Durometer (12 / - Main image
$32.76 $52 In stock

PTFE o-rings in AS568-232, 2.734" 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: 232
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 2.734" (69.44 mm)
  • Durometer: 23 Shore A
  • Temperature range: -350°F to +500°F (-212°C to +260°C)
  • Measurement type: Imperial
  • Pack quantity: 12 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)

Jacob W. ★★★★★

The 23 durometer PTFE is noticeably softer than standard Teflon, which made installation in a tight vacuum port much easier. Handles repeated thermal cycling from liquid nitrogen to 400°F without any visible wear.

John ★★★★★

For a high-temp application in a lab furnace, these PTFE o-rings held up perfectly at 450°F without any softening. The 23 durometer feels surprisingly firm yet still seals nicely against the groove. Exactly what I needed for a static seal.

Elizabeth Y. ★★★★★

The temperature range is what sold me—needing something that holds up at -350°F is rare, and these fit perfectly on the flange. The 23 durometer PTFE feels firmer than rubber but seals without fighting you. I've already ordered a second pack.