Mutual Screw & Supply

0.21" CS X 2.225" ID Viton FKM O-Rings | AS568-331 | Dash 331 | 75 Durometer | Brown (20 / Pkg.)

0.21" CS X 2.225" ID Viton FKM O-Rings | AS568-331 | Dash 331 | 75 Durometer | - Main image
$30.95 $50.74 In stock

Viton FKM o-rings in AS568-331, 2.225" inner diameter by 0.21" 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: 331
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 2.225" (56.52 mm)
  • Durometer: 75 Shore A
  • Color: Brown
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 20 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 (4.6 / 5 · 5 reviews)

Daniel ★★★★★

The 75 durometer is just right for sealing my hydraulic cylinder, and it handles high temps without issue. Fit the groove perfectly right out of the package.

Miles ★★★★★

Used these on a hot oil pump where temperatures regularly hit 300°F, and the Viton FKM held up perfectly without any hardening. The brown color actually made them easier to spot during installation compared to black o-rings.

Matthew ★★★★★

Installed these on a hydraulic manifold that sees constant 300°F steam — the Viton FKM material hasn't softened or cracked after two weeks of daily cycling. The brown color makes them easy to spot during inspection, and the 75 durometer feels firm but not brittle. Exactly what I needed for high-temp