To insure the correct performance of your PUR guns with leaking nozzles we suggest the following:

1. Replace nozzle tips regularly
2. Replace adapters every few weeks
3. Insure that the gun is venting properly
4. Do not use dented cartridges
5. Insure that foil seal in cartridge is punctured properly so that foil is not released into the nozzle
6. Preheat all cartridges with the correct preheater for the correct amount of time
7. Puncture the back of the cartridge before preheating.
8. Insure that the cartridges are thoroughly heated and completely molten before using