Services

Surface treatments

Seals can be coated with transparent or colored, elastic, environmentally-friendly bonded coatings made either on a water or solvent basis. For example, we can apply PTFE-based bonded coatings that are applied in a variety of ways: spray drum, dipping, hand coating, plasma treatment, …

Possible areas of application are wherever it is necessary to differentiate between components (e.g. similar O-ring dimensions), to change color without affecting the material properties (e.g. a black material), or the design (color consistency across multiple batches, color choice acc. to specifications)

Moreover, coatings are often applied for functional reasons: reducing friction, simplifying assembly, non-stick properties, altering the electrical surface resistance, noise reduction, reducing wear in dynamic applications, …

Additional surface treatments:

 

Moly coating

Seals can be treated with MoS2 powder. This can, for example, keep components from sticking to one another and significantly improve gliding properties. The coating is applied using a drum.

Talcum powder coating

Seals can be treated with talcum powder. This can, for example, keep components from sticking to one another. This procedure is also very cost-effective. The coating is applied using a drum.

 

Silicon coating

Seals can be treated with a transparent silicon emulsion. This significantly improves the gliding properties while keeping costs low. The coating is applied using a drum.

 

Graphite coating

Seals can be treated with graphite powder. This can, for example, keep components from sticking to one another and significantly improve gliding properties. The coating is applied using a drum.

 

Labels

Labeling components in order to
differentiate between materials with the same color or between similarly sized components
ensure proper installation and assembly

 

Labeling options:
A colored dot on the surface (positioning, color, number of dots based on customer specifications)
Colored coating (See also bullet point/Add link to: Surface treatments)

Cleaning

Various procedures can be used to clean elastomer components in order to perform tasks such as remove any non-vulcanized materials, oils, greases, silicones, production aids or dirt.

 

Surface cleaning options:
High-pressure cleaning with a special cleaning system
Plasma treatment
Ultrasonic bath

 

Purpose of surface cleaning:
Meet cleanliness requirements based on customer specifications
Perform cleanliness analyses in acc. with common industry guidelines (e.g. ISO 16364 or VDA 19)
Remove any substances that are detrimental to paint adhesion
Ensure components are free of silicone