Nicrobraz Green Stop-Off Type I, 2.2 lbs. Aluminum Container is designed to protect metal surfaces from the flow of molten brazing filler metal or to prevent metal surfaces from adhering to each other during furnace, flux & torch, and molten-salt dip brazing of aluminum. The Green Stop-Off Type I is fast drying (solvent-based).  Click here for a MSDS Sheet.

Type I-

The solvent-based Type I materials are flammable and should be handled as such. Normal caution should be exercised in their use. They should only be used in well-ventilated areas. Use if there is a chance of oil on the surface from the shop air. Type I is much thinner than Type II. Generally has a better bond to the base metal surface after application. 

Uses:

*Used for a variety of industrial heat-resistant applications.

*Prevents the flow of molten metal into threads, holes, cast surfaces and finished surfaces.

*Can be used with almost any base metal, ferrous or non-ferrous. **except reactive metals such as titanium, zirconium and their alloys**

Removal:

Residue left over after the thermal process can be removed by-

*Vapor Blasting

*Grit Blasting

*Wire Brush

*Polishing

*Pickling