Organic

Organic coatings can be supplied, which consist of a coloured pigment bonded with a heat curing polymer. PTFE or molybdenum disulphide can also be included to give controlled lubricity.

These coatings give:

A coloured coating
An insulated coating
Good corrosion resistance
In some cases high temperature resistance
Controlled lubricity, if required
High wear resistance
No risk of hydrogen embrittlement

They can be applied by dipping and centrifuging off excess material, by spraying or dip coating.



Typical applications are:

Machine screws
Self tappers
Thread-forming screws
Door hinge pins
Automotive clutch-brake pedal assemblies
Automotive disc-brake callipers and pistons
Suspension units
Clips and bracketing on domestic appliances
Splines

For lubricative coatings, the amount and type of lubricant can be varied to give 8μ values between 0.08 to 0.20.


Note:
Tightness may be experienced with small threaded fasteners having fine threads, e.g. below M5. This need not necessarily inhibit assembly, however. Blind holes should be avoided wherever possible. Components with flat surfaces, such as plain flat washers, may give rise to sticking, but can be for example Xylan® or Deltaseal® coated by using specialist processes or methods.

A range of proprietary processes are used to enable the supply of a coating to satisfy customer requirements and be able to be applied using the most economic method. These coatings range from Xylan®, Deltaseal®, Emralon® , Molykote® and Molydag®, E- Cote Polyseal® and others as specified.