Mutual Screw & Supply

0.21" CS X 15.475" ID Buna-N Nitrile O-Rings | AS568-384 | Dash 384 | 70 Durometer | Black (15 / Pkg.)

0.21" CS X 15.475" ID Buna-N Nitrile O-Rings | AS568-384 | Dash 384 | 70 - Main image
$36.04 $54.6 In stock

Buna-N Nitrile o-rings in AS568-384, 15.475" 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: 384
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 15.475" (393.06 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 15 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)

Lucy ★★★★★

I’ve been using these o-rings for a hydraulic system rebuild, and the 70 durometer feels just right for the pressure range I need. They slid into the groove easily and sealed perfectly on the first try. Temperature hasn’t been an issue even with the fluid heating up to 180°F.

Leo D. ★★★★★

The ID measured exactly 15.475" with my calipers, so the sizing is dead-on for my application. These seals handled a hydraulic leak I'd been chasing for weeks, and the -40°F to +250°F range gives me confidence for winter use.

Owen K. ★★★★★

The 70 durometer hardness is spot on for my application, and the -40°F rating gives me peace of mind for the cold months. These seals sit firmly in the groove without any distortion, and the black finish looks clean against my equipment.