Mutual Screw & Supply

0.21" CS X 16.475" ID Buna-N Nitrile O-Rings | AS568-386 | Dash 386 | 70 Durometer | Black (15 / Pkg.)

0.21" CS X 16.475" ID Buna-N Nitrile O-Rings | AS568-386 | Dash 386 | 70 - Main image
$40.85 $58.36 In stock

Buna-N Nitrile o-rings in AS568-386, 16.475" 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: 386
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 16.475" (418.47 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)

Jacob D. ★★★★★

The 16.475" inner diameter was spot-on for my hydraulic cylinder rebuild, and the 70 durometer feels plenty firm without being brittle. These handled a full day of hot oil service up near the 250°F mark without any visible wear or swelling.

Ryan ★★★★★

The seal fits perfectly into my hydraulic cylinder’s gland, and the 70 durometer hardness feels just right for a firm yet flexible seat. I’ve used it on a line that runs hot and cold, and the -40°F to 250°F range covered what I needed without any hardening.

Sofia ★★★★★

The 0.21" cross-section made installation in the deep groove much easier than I expected from an o-ring this size. They seal perfectly on my hydraulic cylinder, and the rubber feels durable without being too stiff. Exactly what I needed for a tough application.