Mutual Screw & Supply

0.139" CS X 6.234" ID Buna-N Nitrile O-Rings | AS568-260 | Dash 260 | 70 Durometer | Black (70 / Pkg.)

0.139" CS X 6.234" ID Buna-N Nitrile O-Rings | AS568-260 | Dash 260 | 70 - Main image
$37.39 $54.99 In stock

Buna-N Nitrile o-rings in AS568-260, 6.234" 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: 260
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 6.234" (158.34 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 70 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 (5.0 / 5 · 5 reviews)

Sofia L. ★★★★★

I needed a large batch for a pneumatic seal replacement, and the 70-durometer material feels just right for the pressure. The 6.234" ID matched my cylinder groove perfectly with no stretching issues.

Lily ★★★★★

These fit perfectly in my hydraulic cylinder rebuild kit; the inner diameter measured spot on at 6.234". They’re also holding up well so far at 200°F, which gives me confidence for continuous use.

James ★★★★★

The 70-durometer hardness feels exactly right for the pressure I’m putting on these, and the 6.234" ID seats perfectly in the groove without any wrestling. I’ve had them cycling between hot oil and cold mornings for a few weeks now, and not a single leak or crack yet.