Mutual Screw & Supply

0.07" CS X 3.489" ID Buna-N Nitrile O-Rings | AS568-043 | Dash 043 | 70 Durometer | Black (300 / Pkg.)

0.07" CS X 3.489" ID Buna-N Nitrile O-Rings | AS568-043 | Dash 043 | 70 - Main image
$37.21 $59.06 In stock

Buna-N Nitrile o-rings in AS568-043, 3.489" inner diameter by 0.07" 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: 043
  • Cross-section: 0.07" (1.78 mm)
  • Inner diameter: 3.489" (88.62 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 300 per package
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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 (4.6 / 5 · 5 reviews)

Zoe W. ★★★★★

The inner diameter of 3.489 inches fit perfectly into the groove on my hydraulic cylinder, no stretching or forcing needed. The 70 durometer hardness feels just right for this application, and the black color matches the rest of the assembly. I've used cheaper o-rings before, but these seal up tight

Victoria ★★★★★

The cross-section on these o-rings feels firm yet pliable—perfect for the hydraulic system I rebuilt on my old lathe. They seated cleanly and held pressure on the first try.

Lucy ★★★★★

These 70-durometer o-rings are exactly the right hardness for my application—they don't feel too stiff or too soft when I seat them. The pack of 300 should last me through several rebuilds, which is nice for the price.