Method and combination for dispensing two part sealing material

A combination for use in dispensing a sealing composition, said combination comprising:

• a flexible package comprising two opposite flexible walls having peripheries firmly attached to each other to form a main chamber between the walls with the walls having a separable attachment to each other along a line extending between spaced parts of said peripheries to divide the main chamber into two temporary main chamber portions;
• predetermined quantities of two low viscosity liquid components, each of said components being in a different one of said temporary main chamber portions and being adapted, upon being mixed with each other, to react with each other to form a sealing composition that while reacting is a higher viscosity, non-sag, non-flowing, thixotropic sealant composition for a period of time and to then form a resiliently flexible solid sealing composition;
• and
• a dispensing assembly comprising an elongate barrel having a through opening with a generally uniform cross sectional area and opposite front and rear ends, a plunger adapted to move along the through opening between the rear end and the front end of the barrel, manually activatable driving means for forcefully driving the plunger from the rear end to the front end of the barrel, a nozzle having inlet and outlet ends, a through passageway smoothly converging from said inlet to said outlet end and having a cross sectional area at said inlet end that is about the same as the cross sectional area of the through opening, and means for removably mounting the inlet end of said none on the front end of said barrel so that when the separable attachment of the walls of said package is manually broken along line and the liquids are mixed together within the main chamber by manually manipulating the flexible walls, the flexible package containing the mixed liquids is inserted into the through opening in the barrel, a portion of the periphery of the flexible package adjacent the front end of the barrel is removed, the inlet end of the nozzle is attached to the front end of the barrel by said means for removably mounting;
• and the driving means is manually activated within said period of time to compress the flexible package, the viscous material will be dispensed through the nozzle.