PSM Thread Locking and Sealing is the leader in the world of pre-applied adhesives. We are constantly working with our material suppliers to develop new processes and offer innovative solutions to meet the ever changing demands from our customer base.
Our pre-applied adhesive products contain thousands of micro-capsules of adhesive material which is coated onto the screw threads, forming a bright coloured, dry to touch and ready to use coating.
Advantages
- High breakaway torque pre-applied adhesives
- Low installation torque
- Fast curing
- Plate and patch service
- Easy identification
- Not effected by most oils and solvents
- Working temperatures -560C to +2000C
- Controlled patch position
- Replaces liquid adhesives
- Replaces mechanical locking devices
Pre-Applied Adhesives
This is a range of insert, dry to touch and ready to use high performance adhesive products.
The thread covered with the adhesive develops its desired locking and sealing properties when compression or shear stress ruptures the micro-capsules after the assembly of the screw. The adhesive is released and within a short time the system hardens. The threads become locked, bonded together and reliably sealed.
- The pre-applied process consists of applying the micro-encapsulated adhesive onto a defined area of the male thread surface.
- The adhesive coating is inert, dry to touch, ready to use.
- Upon assembly into the mating threaded component the micro-capsules rupture, developing a secure locking of the two components with a high strength adhesive bond.
Recommendations
HOLE PREPARATION
In all cases the female thread of the mating components should have the lead thread de-burred or countersunk to avoid damage to the patch material upon assembly.
THREAD PREPARATION
To obtain optimum patch performance both male and female threads should be in accordance with class 6g/h (metric) or class 2 a/b (unified).
FINISHES
Pre-applied adhesives can be applied to most popular plated finishes, as well as polymer and organic coatings. Epoxy products should be avoided with Aluminium as the resultant reaction can cause assembly problems.
SCOTCHGRIP® 2353
Uses a hardening product which is hydroscopic, and therefore contact with moisture (which may exhibit a whitening effect) prior to assembly should be avoided.
We currently process a range of Headed Components, Studs, Plugs and similar parts. We can apply our coating to ferrous or non-ferrous materials (Steel, Aluminium, Brass or Stainless Steel and some plastic materials).
With our on site Plating Division we offer a complete Plate and Patch service.
This is a general guide to the products we currently process. We are able to process other components subject to evaluation. Reusability of micro-encapsulated adhesives is not recommended.
Product Recommendations
Table: extract from BS 7795:1995
