Mutual Screw & Supply

0.139" CS X 0.859" ID Buna-N Nitrile O-Rings | AS568-212 | Dash 212 | 70 Durometer | Black (600 / Pkg.)

0.139" CS X 0.859" ID Buna-N Nitrile O-Rings | AS568-212 | Dash 212 | 70 - Main image
$31.94 $50.7 In stock

Buna-N Nitrile o-rings in AS568-212, 0.859" 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: 212
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 0.859" (21.82 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 600 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 (4.8 / 5 · 5 reviews)

Scarlett ★★★★★

The 600-count pack is a solid value, and the 70-durometer hardness feels just right for my hydraulic fittings. The -40°F to +250°F range gives me confidence for outdoor equipment, and they seated snugly without any distortion.

Alexander K. ★★★★★

The 70 durometer is exactly right for my compressor's check valves, and the 0.859" ID fit snugly on the first try. Handled the hot oil without any swelling.

Samuel X. ★★★★★

Used these to rebuild a pneumatic actuator on an old press, and the temperature range covers the hot oil perfectly. The 70 durometer feels just right for a snug seal without being too stiff.