Mutual Screw & Supply

0.21" CS X 13.475" ID Buna-N Nitrile O-Rings | AS568-380 | Dash 380 | 70 Durometer | Black (25 / Pkg.)

0.21" CS X 13.475" ID Buna-N Nitrile O-Rings | AS568-380 | Dash 380 | 70 - Main image
$38.22 $52.35 In stock

Buna-N Nitrile o-rings in AS568-380, 13.475" 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: 380
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 13.475" (342.26 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°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 (5.0 / 5 · 5 reviews)

Aurora M. ★★★★★

The cross-section is exactly 0.21" as specified, so it sealed my hydraulic cylinder without any slop. I’ve been running it near 200°F and the Buna-N material hasn’t hardened up at all.

Eli J. ★★★★★

The 13.475" ID fit my large flange perfectly, and the 70 durometer feels firm enough to hold pressure without being a bear to squeeze into place. Took a bit of fiddling to seat them evenly, but they seated true and should handle the 200°F fluid here without complaint.

Aurora L. ★★★★★

Popped these onto a Parker seal groove at work and they seated neatly — the 70 durometer feels just right for the pressure we're running. No leaks so far after a week of cycling.