Black Buna-N O-Ring | 21mm ID x 2.5mm Wide | 70 Durometer
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Black Buna-N O-Ring | 21mm ID x 2.5mm Wide | 70 Durometer

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Black Buna-N O-Ring | 21mm ID x 2.5mm Wide | 70 Durometer (350/Pkg.)

Mutual ScrewSKU: ZMUSH2.5X21B50
Price:
$31.01per 350( $0.09 each)
Pieces 350
Measurement type Metric
Material Nitrile
Color Black
Cross section 2.5
Cross section shape Round
Durometer 70
Inner diameter 21
Outer diameter 26
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

Black Buna-N O-ring with metric size 21 millimeter inside diameter and 2.5 millimeter cross-section, engineered for reliable general-purpose sealing. Bulk-packaged with 50 pieces per pack to support replacement cycles and inventory planning.

Specs

  • Dimensions: Inside Diameter 21 mm; Cross Section 2.5 mm
  • Material: Buna N (Nitrile)
  • Hardness: 70 Shore A
  • Temperature Range: -40°C to 125°C
  • Color: Black

Features

  • Material: Buna N (Nitrile), 70 Shore A hardness provides reliable compression for repeatable seating in assemblies.
  • Size System: Metric sizing with 21 millimeter Inside Diameter and 2.5 millimeter Cross Section ensures compatibility with metric fittings and housings.
  • Temperature Resistance: Operational range from -40°C to 125°C supports automotive, hydraulic, and industrial environments.
  • Oil and Fuel Resistance: Buna-N demonstrates good resistance to petroleum-based oils and fuels within specified conditions, suitable for general purpose seals in oil exposed systems.
  • Seating Precision: Precisely formed ID and CS promote repeatable seating and consistent seal engagement across threaded or bolted assemblies.
  • Packaging: Bulk packaging of 50 pieces per pack enables batch replacements and straightforward inventory planning.
  • Use Cases: Ideal for general sealing in equipment, fixtures, valves, pumps, hydraulic lines, and other metric system assemblies requiring a 21 millimeter ID and 2.5 millimeter CS O-ring.

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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