The Nüssle company:

Specialists for stop-off paints

Founded by Erich Nüssle in 1952, the Nüssle company today is a global leader in the development and manufacture of stop-off paints used in the heat treatment industry. 

The Nüssle products are used for reliable partial isolation in the course of various heat treatment processes such as gas and low-pressure carburising, powder and granulate carburization, nitriding and annealing. The stop-off paints are delivered worldwide to more than 20 distributors under the globally protected brands CONDURSAL, CONDURON and VACUCOAT, setting top quality standards.

The medium-sized company from Nagold has been a member of our company group since 1984.

Production / product filling at NÜSSLE

Research and development at NÜSSLE: Chemical development and testing laboratory

Regular exchange on the latest product developments and special applications at our customers

Our products

The stop-off paints for carburizing, gas nitriding, nitrocarburizing, plasma/pulse plasma nitriding and annealing processes set standards when high-quality and complex components have to be protected against diffusion of carbon and / or nitrogen in defined areas prior to heat treatment.

Our services

We offer our customers comprehensive and profound expertise that is unmatched on the market. Our company actively conducts its own research and development and we share our know-how in lectures and training courses. Our consulting services include, among others, technical application support for the use of our products. Our service portfolio is supplemented by an intensive after-sales service.


– Application technical consultancy  

– Problem analyses and development of approaches to finding solutions

– Technical lectures and courses 

– Technical laboratory tests