Mutual Screw & Supply

0.139" CS X 5.359" ID Viton FKM O-Rings | AS568-253 | Dash 253 | 75 Durometer | Black (14 / Pkg.)

0.139" CS X 5.359" ID Viton FKM O-Rings | AS568-253 | Dash 253 | 75 Durometer | - Main image
$33.96 $50.68 In stock

Viton FKM o-rings in AS568-253, 5.359" 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
  • Material: Viton FKM
  • AS568 dash size: 253
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 5.359" (136.12 mm)
  • Durometer: 75 Shore A
  • Color: Black
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 14 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)

Edward J. ★★★★★

These are exactly the AS568-253 size I needed for a hydraulic fitting, and the 75 durometer feels sturdy. The tolerance is tight and they seated perfectly on the first try.

Kevin ★★★★★

The high-temperature rating on these Viton FKM o-rings was exactly what I needed for a steam line application; they seated perfectly and haven't shown any signs of degradation.

Natalie P. ★★★★★

Installed these on a hot water valve at work where the old buna ones kept failing—the -15°F to +400°F range is perfect for the steam cycling we deal with. The 75 durometer feels solid but not too stiff to seat easily.