Mutual Screw & Supply

0.21" CS X 0.849" ID Buna-N Nitrile O-Rings | AS568-316 | Dash 316 | 90 Durometer (300 / Pkg.)

0.21" CS X 0.849" ID Buna-N Nitrile O-Rings | AS568-316 | Dash 316 | 90 - Main image
$40.3 $55.97 In stock

Buna-N Nitrile o-rings in AS568-316, 0.849" 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: 316
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 0.849" (21.56 mm)
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 300 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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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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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)

Mia ★★★★★

The 90-durometer hardness is exactly what I needed for a high-pressure seal, and they arrived well-packed with a clean, uniform finish. Slipped right onto the fitting without any hassle, and the -40°F rating gives me confidence for winter use.

Zoe ★★★★★

Ordered these for a hydraulic repair job and the 90 durometer hardness is exactly what we needed—they seat firmly without squishing out under pressure. The 0.21" cross-section feels chunky and consistent across the whole bag, which is reassuring when you're buying 300 at once. Fast shipping too, but

Kevin ★★★★★

Needed the 90 durometer for a high-pressure hydraulic fitting, and these 316s seated perfectly without any distortion. The box of 300 will last me years of rebuilds, and they've handled the 200°F service temps without a single failure so far.