Mutual Screw & Supply

0.21" CS X 7.725" ID Buna-N Nitrile O-Rings | AS568-362 | Dash 362 | 70 Durometer | Black (40 / Pkg.)

0.21" CS X 7.725" ID Buna-N Nitrile O-Rings | AS568-362 | Dash 362 | 70 - Main image
$37.69 $52.35 In stock

Buna-N Nitrile o-rings in AS568-362, 7.725" 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: 362
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 7.725" (196.21 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 40 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)

Christopher ★★★★★

I needed a replacement for a hydraulic ram seal, and the 0.21" cross-section matched the old one exactly. The 70 durometer feels like the right balance of firmness and flexibility for my application.

Jacob ★★★★★

I needed a specific size to repair an old industrial valve, and these AS568-362 o-rings fit perfectly with their 7.725" inner diameter. The 70 durometer rubber feels sturdy but not too stiff, and they haven't leaked a drop since installation.

Emma ★★★★★

The 0.21" cross-section seals perfectly on my hydraulic cylinder, and the 70 durometer feels firm but flexible enough for a snug fit. These buna-n rings handled a 200°F fluid test without any softening—exactly what I needed for a long-term seal.