Plexus MA 425 490 ml cartridge kit is strong adhesive commonly used in boatbuilding and gluing of plastics. This glue has a 10:1 mix ratio and a 30 to 35 minute working time. It is blue in color and features a long open time for ease of use. MA 425 is used often when a the application may take more time. Most other Plexus adhesives have a rapid cure time, and can harden before applied properly. MA 425 does not.