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Vacuum Bonding

CLS-4000 Examples

When you need something ceramic lined, we got you covered with CLS-4000™ Technology or more commonly referred to as “vacuum bonding.” This industry proven method of joining dissimilar materials uses high strength structural aerospace epoxies in place of less effective adhesives. By employing this technology for abrasion resistant applications, the resulting bond strength, increased impact strength and wear resistance material options are unmatched.

CLS-4000™ vacuum bonding provides opportunities to extend equipment life, reduce component weight and provide wear solutions for even the most complicated shapes. Deploying this technology over a wide range of industries has provided our customers money saving opportunities to refurbish old equipment, install wear panels only where needed and reduce downtime by relying on a wear resistant product they can count on.

CLS-4000™ products can withstand temperatures up to 350°F and with bond shear strengths exceeding 5,000 PSI we can provide solutions for your toughest environment.

When, Where and Why choose CLS-4000™ Technology?

CLS-4000 Example

When

  • Other adhesion methods have failed, greater impact resistance is needed and material loss could possibly damage other equipment.
  • Component weight is an issue and using alumina ceramic versus CCO, AR plate or other hardened steels can lessen the load on motors, supports, gears and bearings
  • Complicated shapes require an abrasion resistant lining
CLS-4000 Screw Example

Where

  • Dynamic applications like fans, screw conveyors and airlocks
  • Surfaces that need to be machined, ground or honed to exacting tolerances
  • Guaranteed bonding performance is a must.
CLS-4000 Detailed Example

Why

  • Because CLS-4000™ provides the highest bond strength, improves component flexibility and impact resistance on materials commonly used for severe abrasion applications

Adhesive Comparison Chart

  CLS-111 (White)
or CLS-444 (Red)
CLS-773 CLS-4000
TYPE RTV Silicone High Modulus Gel Epoxy Toughened Epoxy Film
Color White or Red Gray Yellow (250), Tan (350)
Hardness 30 - 32 Shore A 80 - 85 Shore D n/a
Operating Temperature 400° F (White) or 500° F (Red) 180° F (Dry) or 130° F (Wet) 250° F (Yellow) or 350° F (Tan)
Conditions Dry Wet or Dry Wet or Dry
Applications Flexible Substrates, Stationary Parts, Sealing/Gaskets Rigid Substrates, Stationary Parts, Chemical Resistant Flexible or Rigid Substrates, Moving or Stationary Parts, Impact Zones
Installation CLSI Shop or Field CLSI Shop or Field CLSI Shop Only
Lap Shear Bond Strength1 < 500 psi 2,400 psi > 5,000 psi
Adhesion Good Better Best
1. Lap Shear Bond Strength tested per modified version of ASTM D1002. Test performed with alumina ceramic tiles adhered to carbon steel substrate. Disclaimer: All data is for reference only, please contact your CLSI Sales representative to recommend a system suitable for your specific application. Rev 08/29/2019
Before

Fan Application Before

After

Durability
Test

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