Mutual Screw & Supply

0.21" CS X 3.475" ID Buna-N Nitrile O-Rings | AS568-341 | Dash 341 | 70 Durometer | Black (100 / Pkg.)

0.21" CS X 3.475" ID Buna-N Nitrile O-Rings | AS568-341 | Dash 341 | 70 - Main image
$39.46 $53.33 In stock

Buna-N Nitrile o-rings in AS568-341, 3.475" inner diameter by 0.21" cross-section. Service range -40°F to +250°F (-40°C to +121°C). Also known as NBR, Buna-N, Chemigum, Hycar, Perbunan.

Specifications

  • Product type: O-Ring
  • Material: Buna-N Nitrile
  • AS568 dash size: 341
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 3.475" (88.27 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 100 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

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)

William ★★★★★

These seals handled the heat in my hydraulic press without any deformation, and the -40°F to +250°F range gives me real confidence for outdoor gear. The 70 durometer feels firm but not brittle when I seat them into the groove.

Benjamin E. ★★★★★

The 0.21 inch cross section fits perfectly into the groove on my old air compressor, finally stopping a small leak I'd been chasing for weeks. The rubber feels dense and pliable, and they handled 200°F without any issues during testing.

Avery ★★★★★

Finally got a proper seal on my hydraulic pump after swapping out the old worn ones; these 70-durometer rings handle the 250°F operating temperature just fine. The 3.475" inner diameter fits snugly, and the bag of 100 should last me through several rebuilds.