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b518 - flexible gasket

Bondloc B518 cures when air is excluded between close-fitting metal surfaces.

B518 is a semi-flexible medium strength gasketing product for use on stainless steel, aluminium, and steel flanged jointed surfaces.

Fills gaps up to 0.25mm and is chemically resistant.

Ideal for use on rigid metal faces and flanges i.e. pumps, motor housings and transmissions.

  • Colour: Red
  • Viscosity: 200,000 – 800,000cps
  • Gap Fill: 0.25mm
  • Shear Strength: 5N/mm2
  • Fixture Speed: < 2 hours with activator
  • Full Cure Time: 12 hours
  • Min / Max Temp: -55°C – +150°C
  • B518-50ml (6)
  • B518C-50ml Clam (6)
  • B518-65ml (6)
  • B518-250ml (1)
Quick tips
Dr Stuk
  • Cures with the absence of air and contact with metal or copper ions
  • Excess deposits will not cure and can be easily wiped away
  • Clean surfaces prior to use with B7063 Cleaner for improved performance
  • Not suitable for use on Plastics or Oxygen rich systems
  • The bottle is only half full, as air space maintains product stability
  • Apply localised heat to remove high strength grades
  • Colour of the product helps denote the product strength - Red and Green are high strength
  • To increase cure speed on passive and inert materials use B7649 Activator
How to video
Dr Stuk

Dr Stuk’s currently filming more product video’s with his crew.
Check back soon!

Quick tips
Dr Stuk
  • Cures with the absence of air and contact with metal or copper ions
  • Excess deposits will not cure and can be easily wiped away
  • Clean surfaces prior to use with B7063 Cleaner for improved performance
  • Not suitable for use on Plastics or Oxygen rich systems
  • The bottle is only half full, as air space maintains product stability
  • Apply localised heat to remove high strength grades
  • Colour of the product helps denote the product strength - Red and Green are high strength
  • To increase cure speed on passive and inert materials use B7649 Activator
How to video


We're currently hard at work preparing a how to video for this product so you can see how it works and all the applications it can be used for.

related products

b7063 - solvent cleaner

key features

  • Function: For use prior to bonding and sealing applications
  • Applications: Solvent based spray that cleans and degreases any surface before repairing or assembly with Bondloc adhesives

b7649 - anaerobic activator

key features

  • Function: Used to increase cure speeds
  • Applications: Increases cure speeds of anaerobic liquids and pastes, works well on inert materials like stainless steel and aluminium

b7782 - gasket remover

key features

  • Function: Used to remove anaerobic gaskets and paint
  • Applications: Gasket remover lifts formed-in-place gaskets, carbon deposits, dried oil, grease and paint from any type of metal

product range

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Bondloc adhesives and engineering products are available to buy at a wide range of online or in store stockists.
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