Pack for anaerobically curable compositions

1. A pack comprising:

a dispenser for anaerobically curable composition; and anaerobically curable composition held within the dispenser,

the dispenser comprising:

(a) a reservoir in which anaerobically curable composition is held, the reservoir having an outlet through which the anaerobically curable composition can be dispensed;

(b) a dispensing pump for pumping the anaerobically curable composition from the reservoir out through the outlet, the dispensing pump including a reciprocating nozzle;

wherein the reservoir and pump together form an airless pump assembly, and

(c) an applicator in communication with the outlet with an applicator surface, the applicator for applying to a substrate the anaerobically curable composition that is dispensed by the pump from the reservoir out through the outlet; and

(d) a piston within the reservoir that progressively reduces the reservoir volume with dispensing of anaerobically curable composition;

wherein the applicator is an applicator roller.

2. A pack according to claim 1 comprising a spreader which regulates dispensing of anaerobically curable composition onto the applicator so that the anaerobically curable composition is spread across the entire applicator surface.

3. A pack according to claim 2 wherein the spreader which regulates dispensing of anaerobically curable composition onto the applicator is a spreader roller.

4. A pack according to claim 3 wherein the spreader roller is mounted within an immersion chamber in which, in use, the spreader roller is immersed in anaerobically curable composition.

5. A pack according to claim 1 wherein the reservoir has opposing ends and the dispensing pump is provided on the same end of the reservoir as the outlet.

6. A pack according to claim 1 further comprising a valve for the outlet that is biased towards a closed position and wherein pumping by the dispensing pump draws the anaerobically curable composition through the valve so as to dispense the anaerobically curable composition out through the outlet.

7. A pack according to claim 1 wherein the dispenser further comprises a housing and further wherein:

the reservoir and pump are assembled together in the form of a cartridge that is insertable into the housing.

8. A pack according to claim 7 wherein the applicator is on the housing.

9. A pack according to claim 8 comprising a spreader which regulates dispensing of anaerobically curable composition onto the applicator so that the anaerobically curable composition is spread across the entire applicator surface and wherein the spreader is located within a chamber in the housing.

10. A pack according to claim 1 wherein the reservoir and pump are assembled together with the pump provided on a closure for the reservoir.

11. A pack according to claim 1 wherein the applicator roller is a foam roller.

12. A pack according to claim 2 wherein the spreader is in the form of a spreader roller and the spreader roller is mounted within an immersion chamber in which, in use, the spreader roller is immersed in anaerobically curable composition.

13. A pack according to claim 1 wherein the piston draws along a side wall defining the reservoir when progressively reducing the reservoir volume with dispensing of the anaerobically curable composition.

14. A pack according to claim 1 wherein the piston has a seal, and wherein the piston is in sealed contact with a side wall defining the reservoir.

15. A pack according to claim 1 further comprising a button arranged at an opposite end of a dispensing end of the dispenser, wherein the actuation of the button causes a dispensing action by the dispensing pump.