Torque Sealant
Developed to visually secure and mark screw connections. Enables early detection of loosening and tampering.
Products
Five ranges for every need. Available in many containers and RAL colours.
Innovative tamper protection
Secure and Topsecure are our answer to the increasing demand for tamper-proof torque sealants.

Secure
Contains a concealed security feature that can be made visible by illuminating the paint with an IR illuminator

Topsecure
Enables clear identification through colour particles in the paint and also contains Secure's concealed security feature.
Application reasons
Our torque sealants can be used in a variety of ways.
Torque loosening indicator
Is this screw connection still tight?
Visual inspection marker
Has this screw connection already been tightened or checked?
Tamper indicator
Was this screw connection loosened without authorisation?
Assignment indicator
Who was the last person to work on this bolted joint?
Threadlocker
Shouldn't this screw connection (M1-M3) be better secured?
Application
It's child's play. We promise.

Apply torque sealant
When applying, the screw and the fastener should be thoroughly cleaned of oil, grease, moisture and rust.

Intact seal
Once the paint system is completely dry, the torque sealant acts as a sealant.

Broken seal
The sealant breaks as soon as the screw connection loosens.
Five extraordinary variants
Compare our torque sealants.
Standard Range | Zero Range | Fast Dry Range | Heat Range | Resist Range | |
Viscosity | 15.000 - 20.000 mPas | 10.000 - 30.000 mPas | 20.000 - 30.000 mPas | 15.000 - 20.000 mPas | 15.000 - 20.000 mPas |
VOC value* | 540 g/L ±20 g/L | 0 g/L | 520 g/L ±20 g/L | 540 g/L ±20 g/L | 540 g/L ±20 g/L |
Application temperature | -20° C - 35° C | 2° C - 35° C | -20° C - 35° C | 2° C - 35° C | -20° C - 35° C |
Temperature stability | -80° C - 160° C | -80° C - 120° C | -80° C - 125° C | -80°C - 600°C | -80°C - 180°C |
pH value | - | ca. 8 - 9 | - | 10 - 11 | 10 - 11 |
Flashpoint | 29° C | - | -4° C | - | - |
Dust-dry after** | approx. 5 min | approx. 10 min | approx. 1 min | ca. 10 - 15 min | ca. 5 - 10 min |
Fully hardened after** | approx. 24 hours | approx. 12 hours | approx. 24 hours | approx. 24 hours | approx. 12 hours |
Density | ca. 1,05 g/cm3 | ca. 0,98 g/cm3 | ca. 1,05 g/cm3 | ca. 1,00 g/cm3 | ca. 1,05 g/cm3 |
Shelf life | 6 - 48 months | 6 - 24 Monate | 6 - 24 Monate | 12 Monate | 12 Monate |
Standard Range | Zero Range | Fast Dry Range | Heat Range | Resist Range | |
Water | |||||
Gasoline | |||||
Super 95 | |||||
White spirit 135/175 | |||||
Special boiling point product 100/140 | |||||
Ethanol | |||||
Isopropyl alcohol (IPA) | |||||
n-Butanol | |||||
2‑Methoxy-1-Propanol | |||||
Butylacetate | |||||
Ethylacetate | |||||
Acetone | |||||
Methyl ethyl ketone (MEK) | |||||
Titanium grease | |||||
WD-40 | |||||
Hydrochloric acid 0,5 mol/l | |||||
Hydrofluorether | |||||
Skydrol LD4 | |||||
Skydrol 5 | |||||
Diesel | |||||
AdBlue | |||||
Novamet 100 |
* May vary slightly depending on the respective colour. ** Drying and through-drying speed are strongly dependent on the layer thickness and the ambient conditions. Please test for your own application.
- Resistant: no or very little impairment
- Bedingt beständig: schwacher bis mäßiger Angrif
- Unstable: strong attack / paint dissolves in medium
Matching accessories
Torque sealant is a varnish that is applied to mechanical fasteners and usually acts as a "visual safety mark" or inspection seal. Torque sealant is available in different colors and in transparent. Most torque sealants currently available on the market are solvent-based but more environmentally friendly variants, for example water-based (VOC-free) torque sealants, have been gaining in importance in recent years as they are much gentler on humans and nature.
Due to the many different fields of application, there are many different terms that can be assigned to the umbrella term "torque sealant". These include: torque seal; torque seal paint; tamper proof sealant; tamper proof indicator paste; torque inspection seal; torque indicator paste; torque stripe; witness mark; marking ink; screw protection varnish.
If you would like to find out more about the topic of torque sealants, we can recommend the article on Wikipedia.