Mutual Screw & Supply

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

0.139" CS X 5.359" ID Viton FKM O-Rings | AS568-253 | Dash 253 | 75 Durometer | - Main image
$39.39 $53.96 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: Brown
  • 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 (4.8 / 5 · 5 reviews)

Julian Z. ★★★★★

These Viton O-rings fit perfectly in my high-temp air compressor setup, and seeing that 400°F rating gave me confidence they'd hold up. The 75 durometer feels firm but not brittle, and the brown color makes them easy to spot during assembly.

Harper ★★★★★

Swapped out the old seal on my hydraulic pump with these and the 75 durometer Viton material fits perfectly. The 0.139" cross-section seated snugly in the groove without any struggle. So far no leaks at our standard operating temperature of 350°F.

Daniel W. ★★★★★

Used these for a hydraulic fitting that sees over 300°F, and the Viton material held up perfectly without any softening. The 5.359" ID was a spot-on match for the groove, making installation easy. Exactly what I needed for a challenging sealing application.