NovaWeld Flex 3HT & 6HT - Innova Solutions
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Products - NovaWeld Flex 3HT & 6HT


NovaWeld Flex 3HT & 6HT 700px x 700px

NovaWeld Flex 3HT & 6HT are two-part structural methacrylate adhesives formulated for applications intended for the powder coating process. Sharing common chemistry, they differ only in the functional cure-speed, allowing diversity of applications.

Both grades offer a high functional tensile shear strength after the initial cure, that further increases following an additional heat cure process (30 min@180ºC / 20 min@200ºC). This unique chemistry allows these grades to not only maintain a high functional strength through the powder coating process, but actually improve in all aspects of functional strength performance.


NovaWeld Flex 3HT & 6HT  are very versatile, and can bond a wide variety of substrates without the need for surface primers or conditioners. Typical examples shown below:

  • Bonding mild steel straps on structural sheet work
  • Sealing weld seams
  • Bonding stainless and aluminum letters and signs
  • Bonding mild steel

 Instructions For Use

  1. Consult the material safety data sheet (MSDS) before using for the first time.
  2. Carry out surface preparation where required.
  3. Remove nut and repeatedly press the gun trigger until both parts are dispensing before attaching mixer nozzle.
  4. This ensures you mix equal amounts of adhesive and activator.
  5. Apply the mixed adhesive to one surface.
  6. Assemble components carefully and clamp if required.
  7. Take care not to over-tighten – you need to leave some adhesive between the joint.
  8. Remove any excess adhesive at this point, before the structural glue starts to cure.
  9. Use a suitable cleaner such as NovaBond Surface Cleaner.
  10. Allow the adhesive sufficient time to achieve handling strength (working time is dependent on grade used and the environmental conditions) before moving or unclamping.

Properties of Uncured Material

ResinMethyl Methacrylate
ColourOff White/Black
AppearanceThixotropic gel
Viscosity Brookfield T Bar200,000- 280,000cps
Cure SystemNon peroxide
Open Time2 - 4 Minutes @20C ( NovaWeld Flex 3HT)
Open Time4 - 6 Minutes @20C ( NovaWeld Flex 6HT)
Fixture Time6 -10 Minutes @20C ( NovaWeld Flex 3HT)
Fixture Time12 - 15 Minutes @20C ( NovaWeld Flex 6HT)


Properties of Cured Material (Pre & Post Heat)

PropertyParameter (Pre-Heat)Parameter (Post Heat)
ASTM D1002 Lapshear (Aluminium)16.09 Nmm218.00 Nmm2
ASTM D1002 Lapshear (Galvanised Steel)15.92 Nmm216.40 Nmm2
ASTM D1002 Lapshear (Stainless Steel)15.5 Nmm216.20 Nmm2
ASTM D1002 Lapshear (Mild Steel)15.02 Nmm219.60 Nmm2
ASTM D1002 Lapshear (GRP)5.80 Nmm2N/a
Gap Fill4mm
Temperature Range-55°C to 125°C
Shore Hardness70 Shore D
Tensile Strength at Break (ISO 527 1A)8.35 Nmm2
%age Elongation at Break (ISO 527 1A)6%
UV StabilityExcellent



NovaWeld Flex 3HT & 6HT  is available in 415ml Nylon cartridges for use with a twin cartridge dispensing gun.


Storage & Shelflife

NovaWeld Flex 3HT & 6HT should be stored unopened in a cool dry location, out of direct sunlight.  Stored correctly this grade can offer a 12 month shelf life from manufacture.


Health and Safety in Use

NovaWeld Flex 3HT & 6HT  is a methyl methacrylate and should not be used without consulting the MSDS, which contains full information regarding the use of this product,  including Transport, Disposal, Toxicological, Exposure Controls, Accidental Release and First Aid measures essential to the safe use of this product.


Please contact us at for further information or to discuss your application.


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Innova Solutions: bonding people, fixing problems: +44 (0)1282 867 390

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Product Downloads

Technical Data Sheet (pdf, 286.53 KB)


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