Mutual Screw & Supply

0.21" CS X 1.85" ID Buna-N Nitrile O-Rings | AS568-328 | Dash 328 | 70 Durometer | Black (200 / Pkg.)

0.21" CS X 1.85" ID Buna-N Nitrile O-Rings | AS568-328 | Dash 328 | 70 - Main image
$34.83 $56.17 In stock

Buna-N Nitrile o-rings in AS568-328, 1.85" 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: 328
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 1.85" (46.99 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 200 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)

Lucy D. ★★★★★

I needed a bulk supply for a pneumatic actuator rebuild and these hit the price point perfectly. The 70 durometer feels nice and pliable, and the -40 to 250°F range covers everything I’ll ever throw at them.

Emily ★★★★★

The fit on these 328s is spot-on for my application, and the 70 durometer feels firm but still seats easily. I grabbed the 200-pack so I've got spares for the next few rebuilds, and the -40°F to +250°F range covers everything I need.

Emily ★★★★★

I was replacing the seals on my hydraulic cylinder and these 1.85" ID rings fit perfectly without any stretching. The 70 durometer hardness gives a nice firm seal without being too stiff.