3M™ Scotch-Weld™ Gasket Maker GM18

  • 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 (148ºC)
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3M™ Scotch-Weld™ High Temperature Gasket Maker GM18 is a red, flexible, 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.

Eliminates the Need for Pre-Cut Gaskets
Our 3M™ Scotch-Weld™ High Temperature Gasket Maker GM18 can be applied straight from the tube or by tracing, roll coating, or screen printing to provide an instant low pressure seal, eliminating the need for pre-cut gaskets, reducing weight, inventory and costs. In the absence of oxygen and in the presence of metal, this modified urethane acrylate (in paste form) cures quickly to a polymer that seals, secures, and retains. 3M™ Scotch-Weld™ High Temperature Gasket Maker GM18 withstands temperatures as high as 300ºF (148ºC) and does not shrink, crack, sag or run for use on rigid flanges and to seal metal assemblies.
Recommended Applications

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

Understanding Anaerobic Adhesives
Anaerobic adhesives 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. An

  • 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 (148ºC)
  • Does not shrink, crack, sag or run
  • For use on rigid flanges and to seal metal assemblies
Specifications
Adhesive Type
Anaerobic, Dimethacrylate Ester
Brand
Scotch-Weld™
Design Challenges
Impact & Shock Absorption, Noise Vibration & Harshness Control NVH
Flashpoint
>=212 Degree Fahrenheit
Full Cure
24 Hours @ 72 F (22 C)
Indoor/Outdoor
Both
Industries
Construction, Consumer Goods, Electronics, General Industrial, Medical, Metalworking, Military and Government, MRO, Signage, Specialty Vehicle, Transportation, Woodworking
Maximum Operating Temperature (Celsius)
148 Degree Celsius
Physical Form
Paste
Position
Good
Product Form
Cartridge, Tube
Shear Strength at 72 Degrees F (22 Degrees C)
750 psi
Shelf Life in Months (from date of manufacture)
12
Specific Gravity
1.09
Storage Temperature
72 Degree Fahrenheit
Viscosity
Non-Sag
Volume (metric)
50 mL
Work Time
35 Minutes