Black Buna-N O-Ring | 21.3mm ID x 2.4mm Wide | 70 Durometer
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Black Buna-N O-Ring | 21.3mm ID x 2.4mm Wide | 70 Durometer

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Black Buna-N O-Ring | 21.3mm ID x 2.4mm Wide | 70 Durometer (350/Pkg.)

Mutual ScrewSKU: ZMUSH2.4X21.3B50
Price:
$31.22per 350( $0.09 each)
Pieces 350
Measurement type Metric
Material Nitrile
Color Black
Cross section 2.4
Cross section shape Round
Durometer 70
Inner diameter 21.3
Outer diameter 26.1
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 21.3 millimeter inner diameter and 2.4 millimeter cross-section provides reliable general-purpose sealing for compact assemblies. The 70 Shore A hardness delivers balanced compression for oil and fuel exposure in small-scale sealing tasks.

Specs

  • Dimensions: Cross-section 2.4 millimeter; Inner diameter 21.3 millimeter
  • Finish: Black
  • Material: Buna N (Nitrile rubber)
  • Hardness: 70 Shore A

Features

  • Oil and Fuel Compatibility: Buna N elastomer exhibits resistance to petroleum-based oils and fuels, suitable for hydraulic, automotive, and industrial fluid systems.
  • Sealing Capacity: Designed for general-purpose sealing in small-scale assemblies; provides reliable static and low-frequency dynamic sealing in compact grooves.
  • Size Precision: Metric sizing ensures accurate groove fit for standardized O-ring grooves with 21.3 millimeter ID and 2.4 millimeter cross-section.
  • Packaging: 350 pieces total across seven bags (50 pieces per bag) for stocking and rapid field repairs.
  • Color: Black for visibility and compatibility with common fluids and components.
  • Installation Guidance: Use standard O-ring groove dimensions; lubricate with O-ring compatible lubricant; ensure groove width and depth align with 2.4 millimeter cross-section.
  • Ideal Applications: Small equipment seals, automotive sensor housings, hydraulic line connections, and general-purpose fluid sealing tasks where Buna N is suitable.

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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