Sealing Function

Pre-coating is an innovative and economic technology that replaces advantageously many sealing systems like gaskets, o-rings, sealing pastes, anaerobic resins, Téflon strips.
Our special machinery enable to realize small series (1000 units) as well as large series (1 million units) in a wide range of applications.

Download the technical data sheet


Sealing of the screw threads

Drain plug and smelter plug
Fitting to threads, straight or cone-shaped
Sensor plug
Metrical or self tapping screw thread screw or pin


Sealing of tubes and hafted units

Rigid nozzle and Pump outlet tube
Tight-hafted smooth cap


Underhead sealing on fasteners

Screw or plug socket
Blind nut and settable pin


We depose a resin on one of the unit to assemble in order to garantee the assembly sealing. The resin fills the assembly and guarantees an immediate sealing during an assembly by screwing.

Many fluids will be sealed by the pre-coating technology:

Compressed air and gas

Drinkable water and warn water

Oils and hydrocarbons

Cooling fluids and brake fluids

The authorized pressure may go beyond the 50 bars, only for some assemblies.


Replaces expensive seals to be implemented

Replaces sealing products, fluid or pastes, and difficult to depose

Control of the technical parameters

Excellent quality: the presence of a sealing system is guaranteed

Vibration and shock absorption and noise reduction

Good resistance to chemicals

High admissible pressures

Seals many fluids

Immediate sealing after assembly

Important reduction of assembly costs in workshop or on a
construction site



We dispose of a large scale of products to help you with many sealing problems on fixation units.

SuppliersProductColorApplication on threaded partApplication on fitted partApplication under head of threaded partApplication under head of crimped part
3m3M 4291Light blueok
precotePrecote 5Light blue or whiteokok
precotePrecote 15*Whiteokok
precotePrecote 200Dark blueok
ThreeBondTB 2353Whiteokokok

* Food contact approval DVGW


Our processes are ISO 9001 certified and fulfill specific requirements in the automotive industry.
QAS 9001 Logo


Our products are approved according to many automotive standards:
Renault CDC 39.02.010
PSA B14.12.35
Volvo STD 1262.2
Ford WX 201

The Precote 15 is food certified by the DVGW organism.


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