Mutual Screw & Supply

Buna-N Nitrile O-Rings | AS568-406 | Dash 406 | 70 Durometer | Black (55 / Pkg.)

Buna-N Nitrile O-Rings | AS568-406 | Dash 406 | 70 Durometer | Black (55 / Pkg.) - Main image
$35.94 $52.08 In stock

Buna-N Nitrile o-rings in AS568-406. 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: 406
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 55 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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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 (5.0 / 5 · 5 reviews)

Penelope ★★★★★

I needed a solid set of backup o-rings for a hydraulic repair, and these dash 406s fit the groove perfectly with that 70 durometer feel. The temperature range down to -40°F gives me confidence they’ll hold up in cold weather.

Sophia ★★★★★

The 70 durometer hardness is spot-on for the AS568-406 sizing I needed, and they slid into place without any fuss. Handled my hot water line up to about 180°F with zero leaks so far, which gives me confidence in that 250°F rating.

Avery E. ★★★★★

Had a stubborn water line valve that kept seeping, but these 406 o-rings did the trick once I matched the dash size. The 70 durometer feels like the right balance of firmness and flexibility for a snug seal.