Mutual Screw & Supply

0.139" CS X 2.609" ID Viton FKM O-Rings | AS568-231 | Dash 231 | X-Ring | 70 Durometer (15 / Pkg.)

0.139" CS X 2.609" ID Viton FKM O-Rings | AS568-231 | Dash 231 | X-Ring | 70 - Main image
$33.59 $50.9 In stock

Viton FKM o-rings in AS568-231, 2.609" 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 (X-Ring)
  • Material: Viton FKM
  • AS568 dash size: 231
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 2.609" (66.27 mm)
  • Durometer: 70 Shore A
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 15 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 (5.0 / 5 · 5 reviews)

Jacob T. ★★★★★

I needed o-rings that could handle higher heat for a seal repair on an industrial dryer, and these Viton FKM ones fit the bill perfectly. The 0.139" cross-section seated snugly in the groove, and they've held up fine through several hot cycles so far.

Elizabeth C. ★★★★★

The temperature rating is exactly what I needed for a high-heat seal application, and the 70 durometer feels just right—not too stiff, not too soft. These Viton FKM rings slid into place perfectly and show no signs of swelling after a week of use.

Benjamin D. ★★★★★

Finally got these to replace some worn-out standard o-rings on a hot oil system, and the FKM material is handling the 350°F operating temps perfectly so far. The 70 durometer feels just right for sealing without being too stiff.