- Used as form-in-place gaskets
- Eliminates the need for pre-cut gaskets, reducing weight, inventory and cost
- Cure at room temperature and seal rigid assemblies of any shape or size
- Withstands temperatures up to 300ºF (149ºC)
- Does not shrink, crack, sag or run
- For use on rigid flanges and to seal metal assemblies
3M™ Scotch-Weld™ Gasket Maker GM74 is an orange, one-component anaerobic sealant formulated to replace pre-cut gaskets, O-rings or used as form-in-place gaskets. They cure at room temperature and seal rigid assemblies of any shape or size. They can be used to fill pits, scratches, and gouges in the flange surface without having to grind or skim the mating surfaces.
Understanding Anaerobic Adhesives
- Vehicle repair and maintenance
- Gearbox and engine casings
- Fuel and water pumps
- Auto thermostats
- Air and liquid filters
- Fluid handling equipment
- Heat exchangers
- Ball joints
(PDF, 2.27 Mb) are uniquely formulated to cure in the absence of oxygen. The term "anaerobic" means "living without air" and when the oxygen is excluded, a chemical chain reaction begins that causes the adhesive to polymerize. Contact with metal speeds the polymerization process and rapidly accelerates the curing process, forming tough cross-linked plastic that provides aggressive adhesion with effective shear strength.
More commonly referred to as threadlockers, pipe sealants, retaining compounds, and gasket makers, these adhesives are often used to enhance the seal, or holding force, in the threads of joined fastener systems such as nut-and-bolt assemblies. A nut-and-bolt assembly may have as little as 15% metal-to-metal contact and even a small amount of anaerobic adhesive readily fills any air voids between the threads and then hardens to a thermoset plastic. These unique adhesives are easy-to-dispense, cure rapidly, and provide effective torque strength while resisting temperature and vibration and sealing out moisture and gasses to protect against corrosion. Anaerobic adhesives can decrease manufacturing costs, enhance equipment reliability, minimize aftermarket breakdown, and reduce warranty claims.
Click here for more information on 3M Structural Adhesives.
(PDF, 15.87 Mb)