Plexus MA300 (30500) is a two-part 1:1 mix ratio, methacrylate adhesive with an included small hand plunger, perfect for single-use or occasional / light-duty dispensing needs. It is designed for structural bonding of thermoplastic, metal, and composite assemblies. Combined at a 1:1 ratio, MA300 has a working time of 3 to 6 minutes and reaches approximately 500 psi in 12 minutes and 1000 psi in 15 minutes at 74°F (23°C). This product offers a combination of high strength and stiffness as well as the ability to bond a wide range of materials. Plexus MA300 is supplied in ready-to-use 50-ml and 400-ml cartridges, 5-gallon (20-liter) pails, or 50-gallon (200-liter) drums to be dispensed as a non-sagging gel. Plexus MA300 replaces an older popular Devcon formula Plastic Welder (14320). It is the same formula inside, but is now branded under the ITW Plexus name. Characteristics Room Temperature Cure Working Time 3 - 6 minutes Fixture Time 12 - 15 minutes Operating Temperature -67°F - 250°F (-55°C - 121°C) Gap Filling 0.03 in. - 0.125 in. (0.75 mm - 3.2 mm) Mixed Density 8.10 lbs/gal (0.97 g/cc) Flash Point 51°F (11°C) Chemical Resistance Excellent resistance to: Hydrocarbons, Acids and Bases (pH 3-10), Salt Solutions Susceptible to: Polar Solvents, Strong Acids and Bases Please Note: These cartridges are designed to work best with a 50ml cartridge Dispenser. We strongly advise you use a 50ml Dispenser for this, and all 50ml cartridges. If you do not have or want this type of gun, this package does include a manual hand plunger that can be used to dispense the epoxy. But it may prove a little hard to push out. If interested, please click on the kit configuration above that includes a Dispenser... or check out the "MixPac 50ml Dispenser"