Mutual Screw & Supply

0.21" CS X 0.599" ID Buna-N Nitrile O-Rings | AS568-312 | Dash 312 | 70 Durometer | Black (400 / Pkg.)

0.21" CS X 0.599" ID Buna-N Nitrile O-Rings | AS568-312 | Dash 312 | 70 - Main image
$34.15 $54.2 In stock

Buna-N Nitrile o-rings in AS568-312, 0.599" inner diameter by 0.21" 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: 312
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 0.599" (15.21 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 400 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)

Lily ★★★★★

The 0.21" cross-section on these seals is noticeably thicker than cheaper o-rings I've used, so they seat into grooves without rolling. I've got a pile of hydraulic fittings on the workbench, and these fit the 0.599" ID perfectly. That 70-durometer Buna-N feels just right for staying supple without

Scarlett F. ★★★★★

The temperature range is exactly what I needed for a steam line repair, and the 70 durometer hardness makes them easy to seat without tools. I've used a few so far and they're holding pressure perfectly.

Evelyn Y. ★★★★★

Needed exactly 400 dash-312 o-rings for a big rebuild and these measured right on spec with my calipers. The 70 durometer feels firm but not brittle, and they slid in without any distortion. Solid buy for the price.