Mutual Screw & Supply

0.139" CS X 0.796" ID Buna-N Nitrile O-Rings | AS568-211 | Dash 211 | 50 Durometer (150 / Pkg.)

0.139" CS X 0.796" ID Buna-N Nitrile O-Rings | AS568-211 | Dash 211 | 50 - Main image
$32.45 $54.08 In stock

Buna-N Nitrile o-rings in AS568-211, 0.796" 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: 211
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 0.796" (20.22 mm)
  • Durometer: 50 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 150 per package
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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)

Adam ★★★★★

These seals fit perfectly for rebuilding a pneumatic manifold at work, and the 50-durometer material compresses just enough for a reliable seal without being squishy. The -40°F low-temp rating is exactly what I needed for outdoor equipment that sees winter service.

Sophia C. ★★★★★

The 50-durometer hardness strikes a great balance—soft enough to seal well on my air fittings, but firm enough to stay put. I've used them in a valve rebuild that sees temps from freezing to over 200°F with no issues. Pack of 150 should last me through several projects.

Sophia M. ★★★★★

These fit perfectly on my hydraulic cylinder rebuild, and the 50 durometer is noticeably softer and seals better than the harder ones I've used before. The 150-count pack gives me plenty of spares for the price.