Thermoloc processed parts prevent loosening due to the vibration of threaded assemblies, including but not limited to:
• Furnace Bolts • Catalytic Converter • Exhaust Manifold • Turbochargers
THERMOLOC:
Burning up the competition
ND’s line of Thermoloc pre-applied processes were developed as chemical alternatives to all metal locking features. When compared, Thermoloc processed parts are more economical in both cost and weight.
Typical Applications
Thermoloc® 450
The Thermoloc 450 process involves the application of a solvent based threadlocker intended for use in high temperature systems. Thermoloc 450 is compatible with either internal or external threads and the factory applied materials will remain inert on the fastener until assembly. Once installed, the resin and hardener mix filling voids in the threads and curing to lock and seal the assembly.
Thermoloc® 1500
ND’s Thermoloc 1500 process applies custom threadlockers to fasteners intended for use in high temperature systems where traditional organic thread lockers fail due to thermal oxidation. Thermoloc 1500 processing is compatible with either internal or external threads and the threadlockers applied will remain inert on the fastener until assembled and heat activated.
Performance of Cured Material
| Installation Torque | < 1.0 N-m |
| Breakaway Torque | 35 N-m |
| Prevailing Off Torque | 11 N-m |
| k-Value | 0.25 |
| Cure time @ 23°C | 24 hours |
| Temperature Range | -54°C to 232°C |
Note that installation, breakaway, and prevailing off-torque data are from test results conducted on an M-10 x 1.5 dry phosphate finish bolts and M010 x 1.5 zinc nuts. Performance may vary depending on fastener finish.
Performance of Cured Material
| Installation Torque | < 12.0 N-m |
| Green Breakaway Torque | 6 N-m |
| Green Prevailing Off Torque | 6 N-m |
| Cured Breakaway Torque | 30 N-m |
| Cured Prevailing Off Torque | 8 N-m |
| Temperature Range | -40°C to 850°C |
Note that installation, breakaway, and prevailing off-torque data are from test results conducted on an M-10 x 1.5 dry phosphate finish bolts and M010 x 1.5 zinc nuts. Performance may vary depending on fastener finish. Green breakaway values are recorded after 24 hours after installation at ambient temperature. Cured breakaway values were determined after exposing the fastener to 400°C for two hours before returning to room temperature. Green hot strength was determined by exposing the assembled fastener to a given temperature for two hours before testing breakaway strength. Cured hot strength was determined by exposing the assembled fastener to 400°C for two hours, followed by two hours at the testing temperature.
| Environment | Temperature | % of Initial Strength |
| Brake Fluid | 150°C | 60% |
| 50/50 Water/Coolant | 100°C | 57% |
| High Temperature Aging | 232°C | 30% |
| Hot Strength | 32°C | 69% |
All environmental and fluid testing was conducted as specified in GMW14657. Chemical resistance testing was conducted at temperature for 168 hours; parts were cooled to room temperature prior to testing. High temperature aging was conducted for 500 hours at temperature; parts were cooled to room temperature prior to testing. Percent of initial strength reported is based upon data collected for M-10×1.5 zinc organic finish bolts and M-10×1.5 zinc nuts with the exception of the hot strength, which is based on M-10×1.5
| Environment | Temperature | % of Initial Strength |
| Brake Fluid | 150°C | 46% |
| 50/50 Water/Coolant | 100°C | 243% |
| 5W30 Synthetic Engine Oil | 150°C | 205% |
| Gasoline | 23°C | 20% |
| Transmission Fluid | 150°C | 202% |
| High Temperature Aging (500hrs) | 600°C | 750% |
| High Temperature Aging (1000hrs) | 600°C | 810% |
| Hot Strength | 200°C | 179% |
| 250°C | 197% | |
| 400°C | 536% |
All environmental and fluid testing was conducted as specified in GMW14657. Chemical resistance testing was conducted at temperature for 168 hours; parts were cooled to room temperature prior to testing. High temperature aging was conducted for 500 and 1000 hours at temperature; parts were cooled to room temperature prior to testing. Percent of initial strength reported is based upon data collected for M-10×1.5 dry phosphate finish bolts and M-10×1.5 zinc nuts.