Mutual Screw & Supply

0.21" CS X 2.975" ID Viton FKM O-Rings | AS568-337 | Dash 337 | 75 Durometer | Black (14 / Pkg.)

0.21" CS X 2.975" ID Viton FKM O-Rings | AS568-337 | Dash 337 | 75 Durometer | - Main image
$38.26 $51.01 In stock

Viton FKM o-rings in AS568-337, 2.975" 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: 337
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 2.975" (75.56 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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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)

Aurora Y. ★★★★★

These fit perfectly in a fluid coupling on my press, much better than the Buna-N ones I had been using. The 75 durometer is firm enough to hold pressure without being too hard to seat.

Harper R. ★★★★★

Needed to replace a leaking o-ring on my hydronic heating manifold and these Viton FKM seals handled the high temp system perfectly. The 2.975" inner diameter was a precise fit, and the 75 durometer feels suitably firm without being brittle. Glad I found these in a 14-pack so I have spares for the r

Nicholas ★★★★★

The 400°F service rating was the deciding factor for me, and these have held up perfectly in a hot oil application that killed my old Buna rings. The 75 durometer feels right for the groove we're using, and the pack of 14 means I've got spares for the next rebuild.