Mutual Screw & Supply

Buna-N Nitrile O-Rings | AS568-173 | Dash 173 | 70 Durometer | Black (75 / Pkg.)

Buna-N Nitrile O-Rings | AS568-173 | Dash 173 | 70 Durometer | Black (75 / Pkg.) - Main image
$37.03 $59.72 In stock

Buna-N Nitrile o-rings in AS568-173. 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: 173
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 75 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 (4.8 / 5 · 5 reviews)

Alexander J. ★★★★★

Ordered these for a hydraulic repair job and the -40°F to +250°F range gives me solid peace of mind for winter operation. The 70 durometer feel is nicely firm without being brittle, and having 75 in the pack means I won't be scrambling for spares mid-project.

Brian ★★★★★

The 70 durometer hardness is exactly what I needed for a consistent seal on a hydraulic fitting, and the pack of 75 means I’ve got spares for the next few jobs. These should handle the temperature swings in my shop without any issues.

John ★★★★★

Ordered these for a fuel system rebuild and the 70 durometer feels tough yet pliable enough to seat perfectly. The -40°F to +250°F range gives me confidence they'll hold up in both summer heat and winter cold.