Thermal Gap Fillers

Thermal Gap Fillers


Tflex SF800 Series


Tflex SF800 is a high-performance, compliant, silicone free thermal interface material.
By coupling extremely high thermal conductivity with exceptional wetting characteristics, Tflex
SF800 provides some of the lowest thermal resistance values in the industry. This makes it
well-suited for applications where silicone based pads are traditionally used as well as those
applications which are silicone sensitive.

Tflex SF800 is naturally tacky on both sides requiring no additional adhesive coating, which
would inhibit thermal performance. The natural tack allows for the pad to be held in place
during assembly.

• Silicone-free gap filler

• Thermal Conductivity of 7.8 W/mK

• Exceptionally low thermal resistance

• Available in thicknesses from 0.020-inch (0.50mm) through 0.040-inch (1.00mm) in 0.010-inch increments

• RoHS Compliant

Additional Product Description STANDARD THICKNESSES
Standard thickness is 0.020-inch (0.50 mm) through 0.16-inch (4.064mm) in 0.010-inch increments

Tflex™ indicates Laird Technologies’ gap filler product line. SF8XXX indicates Tflex™ SF800 product
line with thickness in mils (0.001-inches).

Tflex™ SF840 = standard 0.040-inch thick Tflex™ SF800 material.
Data for design engineer guidance only. Observed performance varies in application.
Engineers are reminded to test the material in application.

Applications • Silicone-sensitive applications
• Automotive applications
• Optical components
• Flat panel displays
• Hard disk drives
• Medical devices
• Laser equipment
• Aerospace electronics
• Solar energy
Color Grey
Product Line Tflex SF800 Series
Shore Hardness 81
Thermal Conductivity (W/mK) 7.80
Thickness Max (mm) 4.00
Thickness Min (mm) 0.05


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.