Mutual Screw & Supply

0.21" CS X 0.662" ID Buna-N Nitrile O-Rings | AS568-313 | Dash 313 | 70 Durometer | Black (400 / Pkg.)

0.21" CS X 0.662" ID Buna-N Nitrile O-Rings | AS568-313 | Dash 313 | 70 - Main image
$38.84 $59.76 In stock

Buna-N Nitrile o-rings in AS568-313, 0.662" 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: 313
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 0.662" (16.81 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 400 per package
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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 (5.0 / 5 · 5 reviews)

Hannah I. ★★★★★

These are going to seal a leaky hydraulic fitting on my log splitter perfectly. The 70 durometer feels firm but flexible enough to seat easily, and the bag of 400 should last me years.

Emma ★★★★★

The AS568-313 sizing is exactly right, and the 70 durometer feels firm without being brittle when I seat them. I’ve used them on a hydraulic fitting that sees about 180°F and they’ve held up fine so far, no leaks in three weeks. Solid black finish and uniform shape across the whole package.

Madison J. ★★★★★

The 70 durometer rating on these is spot on for the hydraulic cylinder rebuild I just finished—nice firm seal without being too hard to install. The 0.662" inner diameter fit the groove perfectly, and I've got plenty left over for future repairs.