Mutual Screw & Supply

0.139" CS X 4.609" ID Buna-N Nitrile O-Rings | AS568-247 | Dash 247 | 70 Durometer | Black (125 / Pkg.)

0.139" CS X 4.609" ID Buna-N Nitrile O-Rings | AS568-247 | Dash 247 | 70 - Main image
$38.63 $55.98 In stock

Buna-N Nitrile o-rings in AS568-247, 4.609" inner diameter by 0.139" 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: 247
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 4.609" (117.07 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 125 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)

Edward B. ★★★★★

Ordered these for a plumbing retrofit and the 70 durometer feels just right—not too stiff, not too soft. The 4.609" ID slipped onto the flanges perfectly without any wrestling. Exactly what I needed for the job.

Ella ★★★★★

I needed a batch of these for a hydraulic cylinder rebuild and the 70 durometer feels just right—firm but not brittle. They seat nicely in the groove without any binding.

Aurora ★★★★★

The 0.139" cross-section on these AS568-247 o-rings feels just right for the hydraulic cylinder I rebuilt—no leaks at all. I’ve got 125 in the pack, so I’ll have spares for other projects, and the 70 durometer seems durable enough for the temperature range I’m working in.