Mutual Screw & Supply

0.139" CS X 0.359" ID Viton FKM O-Rings | AS568-204 | Dash 204 | 75 Durometer | Brown (200 / Pkg.)

0.139" CS X 0.359" ID Viton FKM O-Rings | AS568-204 | Dash 204 | 75 Durometer | - Main image
$40.03 $56.38 In stock

Viton FKM o-rings in AS568-204, 0.359" 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: 204
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 0.359" (9.12 mm)
  • Durometer: 75 Shore A
  • Color: Brown
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 200 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 (5.0 / 5 · 5 reviews)

Ruby J. ★★★★★

Had a small steam leak on a line that kept melting standard rubber gaskets, so I grabbed these Viton o-rings. The 75 durometer feels solid, and the 400°F rating gives me peace of mind. So far, not a single drip since the swap.

Robert L. ★★★★★

Needed high-temp seals for a hydraulic line near the exhaust, and these Viton rings have held up perfectly at 350°F without any hardening or cracking. The 75 durometer feels firm but still seats easily, and the brown color makes them easy to spot during assembly.

Riley N. ★★★★★

Been using these for a few weeks in a hot oil environment and they're holding up perfectly, no swelling or cracking. The 75 durometer feels just right for sealing without being too stiff.