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Buna-N Nitrile O-Rings | AS568-437 | Dash 437 | 70 Durometer | Black (30 / Pkg.)

Buna-N Nitrile O-Rings | AS568-437 | Dash 437 | 70 Durometer | Black (30 / Pkg.) - Main image
$31.04 $50.06 In stock

Buna-N Nitrile o-rings in AS568-437. 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: 437
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 30 per package
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When it ships

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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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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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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)

Lily ★★★★★

The -40°F to +250°F range covers everything I need for both hot and cold lines, and the durometer feels just right for a snug seat without being brittle. Opened the pack and every ring was clean, uniform, no flash or nicks. These won't be the last I order.

Timothy U. ★★★★★

I needed a standard 70 durometer o-ring for a hydraulic repair and these handled the -40°F spec perfectly during a cold start test. The 30-pack gives you plenty of spares for the price.

Violet J. ★★★★★

These o-rings fit the AS568-437 groove perfectly and the 70 durometer feels just right for my hydraulic application. They handled the 180°F operating temperature without any visible swelling or softening. Very pleased with how well they seal.