Black Buna-N O-Ring | 21.5mm ID x 3mm Wide | 70 Durometer
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Black Buna-N O-Ring | 21.5mm ID x 3mm Wide | 70 Durometer

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Black Buna-N O-Ring | 21.5mm ID x 3mm Wide | 70 Durometer (225/Pkg.)

Mutual ScrewSKU: ZMUSH3X21.5B25
Price:
$33.30per 225( $0.15 each)
Pieces 225
Measurement type Metric
Material Nitrile
Color Black
Cross section 3
Cross section shape Round
Durometer 70
Inner diameter 21.5
Outer diameter 27.5
Temp range '-40°F to +250°F (-40°C to +121°C)
Weight 0.5 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Professional-grade Buna N O-Ring with 21.5 millimeters inside diameter and 3 millimeters cross-section. The black elastomer is rated at 70 Shore A and formulated for mineral oil-based fluids, delivering static sealing and light dynamic sealing in compact assemblies.

Specs

  • Dimensions: CS 3 millimeters, ID 21.5 millimeters
  • Material: Buna N (Buna 70) nitrile
  • Durometer: 70 Shore A
  • Color: Black

Features

  • Applications: Static sealing and light dynamic sealing in industrial environments, suitable for small-diameter seals and compact assemblies.
  • Seal design: Small-gland sealing with groove dimensions matched to ensure proper compression and sealing performance.
  • Material compatibility: Oil-resistant nitrile formulation optimized for mineral oil-based fluids and common hydraulic or pneumatic lubricants.
  • Packaging: Pack of 25 pieces per pack to simplify stocking and maintenance tasks.
  • Replacement use-case: Ideal for replacing worn O-rings in small-diameter seals and compact assemblies.

Can We Help?

If you’re not sure that this product is right for you, give us a call!
800-222-0324

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