Thermal Gap Fillers

Thermal Gap Fillers


Soft And Low Abrasion Gap Filler

Tputty 403 is a single-part silicone-based thermal gap filler that is soft and low abrasion. Tputty 403 is ideal for applications where large or uneven gap tolerances are present. The soft and compliant nature of this material allows for the transfer of little to no pressure on mating parts. Tputty 403 provides excellent thermal performance and compliance.

• Soft and compliant

• 2.3 W/mK thermal conductivity

• Dispensable

• Available in 75 cc 180 cc 360 cc and 600 cc dispensing cartridges

• Available in 20 kg pails

Additional Product Description Data for design engineer guidance only. Observed performance varies in application. Engineers are reminded to test the material in application.
Applications • Automotive electronics
• LED Lighting
• Graphic chips
• Telecom Base Stations
• Microprocessors
Colour White
Flow Rate (g/min) 29
Min Bondline Thickness (mm/in) 0.005

Flow Rate (75 cc taper tip 0.125” orifice 40 psi) – 29 grams/min

Minimum Bondline thickness – 0.002 in

Deflection vs compression force (see curve) – %deflection

Product Line Tputty 403 Series
Specific Gravity (g/cc)
Temperature Range (Max Celsius) 150.00
Temperature Range (Min Celsius) -45.00
Thermal Conductivity (W/mK)
Volume Resistivity Volume Resistivity Del 1,013


A service that is competitive, responsive and reliable

Our sales team and engineers are happy to work directly on site with clients always providing a personal and direct approach to fulfilling customer needs

  • High quality products that are produced in the UK (not China).
  • Local Sales team and engineers available 5 days per week.
  • Comprehensive back up and after sales service, with an actual technician ready to listen and help on the telephone 5 days a week. (No automated phone queuing system)
  • All products are REACH and ROHS compliant.
  • A Reliable, discreet and trustworthy partner with a proven track record in design and engineering.
  • Very competitive compared to overseas competition.
  • A huge reduction in air miles and lead times compared to overseas suppliers.
  • Able to deliver to most destinations in the European Union within 24hrs.

Microwave Absorbers

Microwave Absorbers & Dielectrics Range from Techni3

Microwave Absorbers

Microwave Absorbers & Dielectrics Range from Techni3

NOTICE: The information contained herein is to the best of our knowledge true and accurate. However, since the varied conditions of potential use are beyond our control, all recommendations or suggestions are presented without guarantee or responsibility on our part and users should make their own tests to determine the suitability of our products in any specific situation. This product is sold without warranty either expressed or implied, of fitness for a particular purpose or otherwise, except that this product shall be of standard quality, and except to the extent otherwise stated Techni3’s invoice, quotation, or order acknowledgement. We disclaim any and liability incurred in connection with the use of information contained herein, or otherwise. All risks of such are assumed by the user. Furthermore, nothing contained herein shall be construed as a recommendation to use any process or to manufacture or to use any product in conflict with existing or future patents covering any product or material or its use.