Mutual Screw & Supply

0.139" CS X 0.859" ID Buna-N Nitrile O-Rings | AS568-212 | Dash 212 | 90 Durometer (600 / Pkg.)

0.139" CS X 0.859" ID Buna-N Nitrile O-Rings | AS568-212 | Dash 212 | 90 - Main image
$36.97 $57.77 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: 90 Shore A
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 600 per package
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Benjamin I. ★★★★★

The temperature range is exactly why I grabbed these—they’ve been living in a hot oil bath for weeks now and still seal perfectly. The 90 durometer stiffness makes them easy to pop in without deforming. A full 600 count means I won't be reordering anytime soon, which is a nice peace of mind.

Charlotte ★★★★★

These 90-durometer rings are holding up perfectly in a cold fluid line that's seen some vibration. The -40°F rating gave me confidence, and so far they haven't leaked a drop. Exactly what I needed for a stubborn fitting.

Violet S. ★★★★★

I needed o-rings for a high-temp hydraulic pump and these AS568-212s in 90 durometer handle up to 250°F perfectly, and the 600-count pack means I won’t run out anytime soon.