AC-665 Class B is a two-part, manganese-cured, chromated, corrosion inhibiting sealant. This sealant provides an effective barrier against the common causes of corrosion on aluminum and between dissimilar metals. Ac-665 Class B has outstanding resistance to aviation gasoline and jet fuel, as well as resistance to chemicals, hydraulic fluids and petroleum products common to the aircraft industry. The mixed compound is a thixotropic paste, easily applied by spatula, extrusion gun or injection gun. It maintains its flexibility and bond strength on most metal substrates under extremes of temperature, weathering and stress.
- Two Part Sealant: 1. Holding the cartridge, grasp the dasher rod and pull back approximately one inch.
- 2. Insert the ramrod into the hollow of the dasher rod, break the piston loose, and inject about 1/3 of the contents into the cartridge.
- Note: Do not inject all of the catalyst in one location. Distribute evenly throughout base material.
- 3. Repeat steps 2 and 3 until all the contents of the rod are emptied into the cartridge. Remove the ramrod.
- 4. Mix for the required number of strokes (hand mixing) or for the required amount of time (machine mixing) indicated in the kit intructions.
- 5. When mixing is complete, remove bottom cap.
- 6. Pull the dasher rod back to the neck of the cartridge, grasp the cartridge firmly at the neck, unscrew the dasher rod and remove.
- 7. Screw the nozzle into the cartridge, insert into the extrusion gun and use as required. For hand extrusion, press the used dasher rod against the plunger to force the material from the cartridge.
Storage
The shelf life of AC-665 Class B is at least 9 months from date of packaging, when stored at temperatures below 80 degrees F in its original container.
Mixed AC-665 Class B may be stored under refrigeration as follows: 15 days at -10 degrees F, 30 days at -40 degrees F. It is important to remember that freezing, storing and thawing procedures reduce application life. Also, frozen storage will reduce application life by varying amounts depending on the storage temperature and length of storage time. All aspects of storage, freezing and thawing should be planned carefully and it is not recommended to mix and freeze with less than 1/2 hour application time.
Health and Safety Precautions
AC-665 Class B sealant is safe to use and apply when recommended precautions are followed. Before using this product, read and understand the Material Safety Data Sheet (MSDS), which provides information on health, physical and environmental hazards, handling precautions and first aid recommendations. An MSDS is available upon request. Avoid overexposure. Obtain medical care in case of extreme overexposure.
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