Mastic: your sealing, bonding and protection solution

What is putty?

Le sealant is a flexible sealing or assembly material that polymerises to form a strong, flexible material. 
Formulated with silicone, polyurethane, hybrid polymer or in two-componentputty allows you to fill the joints, paste elements or provide lasting protection surfaces against moisture, vibration and chemical attack. 

It is widely used in the construction, industry, shipbuilding, automotive and aerospace sectors. 
Each type of sealant has specific properties adapted to precise technical constraints. 

Find out more about our sealants on this page: 
👉 Silicone | Bi-component | Polyurethane | Polymer 

Advantages of sealants

Professional sealants offer many benefits: 

  • Excellent multi-substrate adhesion metal, concrete, glass, plastic, wood. 
  • High mechanical strength withstands vibration, expansion and movement. 
  • Perfect seal water, air and certain chemicals. 
  • Lasting flexibility even after hardening. 
  • Adaptability extreme environments: UV, heat, humidity, cold. 
  • Easy to apply to the cartridge or pump. 

Each formulation (silicone, polyurethane, polymer, etc.) meets specific needs depending on the intended application. 

Building and construction 

Sealants ensurewaterproofing façade joints, gluing joinery, insulation of partitions or fixing composite panels. They are essential for guaranteeing the durability of structures. 

Automotive and transport 

They are used for l'assembly of bodywork, tightness of glazing, fixing internal partsor corrosion protection. 

Industry and manufacturing 

In industry, sealants are used to gluing mechanical parts, assembling composite materialsor protect electrical systems against water and dust. 

Aeronautics, naval and rail 

High-performance sealants for withstand thermal cycles, to impacts, extreme vibrationsThe result is a product that is easy to install, while providing reliable sealing and bonding properties over the long term. 

Silicone 

Le silicone sealant is ideal forwaterproofing and the bonding in environments exposed to humidity (bathrooms, kitchens, outdoors).

  • Resistant to UV, mould and high temperatures.
  • Excellent flexibility over time. 

Bi-component 

Le two-component sealant (a mixture of a base + a hardener) is perfect for complex industrial applications.

  • Controlled drying, superior adhesion.
  • Very high mechanical and chemical resistance. 

Polyurethane 

Le polyurethane sealant is used for structural bonding and applications subject to high mechanical stress.

  • Excellent compromise between elasticity and strength.
  • Strong adhesion to a wide range of substrates, even porous ones. 

Polymer 

The hybrid polymer sealants combine the advantages of silicones and polyurethanes.

  • Solvent-free, low VOC content.
  • Bonding and sealing on damp or wet surfaces. 

At ADDEV Materialswe select high-performance sealants adapted to your most demanding environments: 

  • Wide choice of technologies silicone, two-component, polyurethane, hybrid polymer. 
  • Certified products for building, automotive, aerospace and industrial standards. 
  • Personalised technical advice to choose the right package for your needs. 
  • Standard formats (cartridge, pouch, barrel) or customised to suit your process. 
  • Partnerships with leading brands recognised for their reliability. 

 

We put our materials expertise at the service of your industrial performance. 

Contact our ADDEV Materials experts ! 
We can help you choose the ideal sealant for your application. 
📞 Contact us now for personalised advice! 

Our strategic sealant suppliers

3M logo
Bostik logo
BLUESTAR SILICONES logo
Henkel logo

FAQ - Putty

A sealant is a flexible paste which, after application, hardens to form a watertight, elastic joint or solid assembly between two surfaces. It is used to seal, bond or protect. 

  • Le silicone sealant is ideal for waterproofing and UV resistance. 
  • Le polyurethane sealant is more mechanically resistant and bonds better to porous substrates. 
  • Le polymer mastic combines elasticity and strong adhesion, solvent-free. 

A two-component sealant is used when you need a high level of protection. controlled drying time and a very high mechanical strength. It is common in heavy industry, aeronautics and shipbuilding. 

Yes, some sealants such as silicones and certain polymers can withstand high temperatures (up to 250°C) without deteriorate or lose their elasticity. 

Yes, but it depends on the type of sealant. Polyurethane and polymer sealants are generally paintable when completely dry, whereas conventional silicones are not.