Mutual Screw & Supply

0.21" CS X 1.975" ID Viton FKM O-Rings | AS568-329 | Dash 329 | 75 Durometer | Brown (25 / Pkg.)

0.21" CS X 1.975" ID Viton FKM O-Rings | AS568-329 | Dash 329 | 75 Durometer | - Main image
$42.39 $58.87 In stock

Viton FKM o-rings in AS568-329, 1.975" 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: 329
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 1.975" (50.16 mm)
  • Durometer: 75 Shore A
  • Color: Brown
  • Temperature range: -15°F to +400°F (-26°C to +204°C)
  • Measurement type: Imperial
  • Pack quantity: 25 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)

Kevin U. ★★★★★

Installed these to replace some old seals on a hydraulic press that runs hot, and the 400°F rating gives me peace of mind. The Viton material feels noticeably firmer than standard rubber, and the 0.21" cross-section seated perfectly in the groove. They’ve been holding pressure without a hint of leak

Mia ★★★★★

Had a stubborn leak on a hot oil line that nothing else could seal, and these FKM o-rings handled the 350°F operating temp without any sign of hardening or cracking.

Ruby F. ★★★★★

Put these on a high-temp hydraulic fitting that kept failing with standard Buna-N, and the Viton held up perfectly for weeks now. The 75 durometer has just enough firmness without being brittle. Exactly what I needed for that 400°F range.