Mutual Screw & Supply

0.07" CS X 3.989" ID Buna-N Nitrile O-Rings | AS568-045 | Dash 045 | 70 Durometer | Black (250 / Pkg.)

0.07" CS X 3.989" ID Buna-N Nitrile O-Rings | AS568-045 | Dash 045 | 70 - Main image
$37.81 $57.29 In stock

Buna-N Nitrile o-rings in AS568-045, 3.989" 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: 045
  • Cross-section: 0.07" (1.78 mm)
  • Inner diameter: 3.989" (101.32 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 250 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 (5.0 / 5 · 5 reviews)

Amelia ★★★★★

I needed o-rings that could handle my hydraulic cylinder rebuild, and these Buna-N 045s fit the groove perfectly with that 0.07" cross-section. The 70 durometer feels just right for sealing, and the box of 250 means I’ve got spares for future projects.

Avery ★★★★★

The 70 durometer stiffness is spot on for holding a seal without being a hassle to install, and the 3.989" ID fit my housing perfectly the first try. I've got a 250-count box now, so I won't be running out for a while, and the black finish looks clean in the assembly.

William ★★★★★

The temperature range on these covers everything I need, from the cold garage in winter to the hot engine bay in summer. The 70 durometer hardness feels solid and they seated perfectly into the groove without any stretching issues.