Mutual Screw & Supply

0.139" CS X 2.859" ID PTFE O-Rings | AS568-233 | Dash 233 | 23 Durometer (12 / Pkg.)

0.139" CS X 2.859" ID PTFE O-Rings | AS568-233 | Dash 233 | 23 Durometer (12 / - Main image
$40.39 $54.58 In stock

PTFE o-rings in AS568-233, 2.859" 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: 233
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 2.859" (72.62 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 (4.8 / 5 · 5 reviews)

Amelia C. ★★★★★

The 23 durometer softness makes these PTFE rings surprisingly easy to seat without tools, yet they hold their shape perfectly. Already swapped out a set of brittle ones in a hot chemical line and they’ve been flawless for two weeks straight.

Ruby ★★★★★

The temperature range on these is what sold me, and so far they hold up perfectly in a high-heat application where my old rubber rings kept melting. The 23 durometer gives them just enough give to seat properly without deforming.

Adam F. ★★★★★

Needed a soft seal for a cryogenic valve repair, and these 23 durometer PTFE rings compressed just right without cracking. The -350°F rating gives me confidence they'll hold up in liquid nitrogen service.