Mutual Screw & Supply

0.103" CS X 1.486" ID PTFE O-Rings | AS568-128 | Dash 128 | 12 Durometer (35 / Pkg.)

0.103" CS X 1.486" ID PTFE O-Rings | AS568-128 | Dash 128 | 12 Durometer (35 / - Main image
$39.33 $55.4 In stock

PTFE o-rings in AS568-128, 1.486" inner diameter by 0.103" 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: 128
  • Cross-section: 0.103" (2.62 mm)
  • Inner diameter: 1.486" (37.74 mm)
  • Durometer: 12 Shore A
  • Temperature range: -350°F to +500°F (-212°C to +260°C)
  • Measurement type: Imperial
  • Pack quantity: 35 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 (4.8 / 5 · 5 reviews)

Christopher E. ★★★★★

I was worried about finding o-rings that could handle the extreme temps in my lab's liquid nitrogen setup, but these PTFE ones seal perfectly at -350°F. The 12 durometer feels just right—firm enough to hold position, yet pliable for installation. Worked flawlessly on my first test run.

Avery ★★★★★

Took a chance on these for a cryo application down near -300°F, and they sealed perfectly on the first try without any leaks. The 12 durometer softness actually made installation easier than I expected for a PTFE ring.

Chloe C. ★★★★★

Needed a high-temp seal for a steam line repair, and these PTFE o-rings handled the 400°F service without any issues. The 0.103" cross-section fit perfectly into the groove, and the 12 durometer material made installation easy. Glad I grabbed a 35-pack for future projects.