The Ideal Ratio Every Time Combining convenience and performance, 3M™ Static Mixing Nozzles mix two-part adhesives, sealers and foams to the perfect ratio every time. As the products pass through the plastic tube, the mixing process occurs. When the product dispenses, it is thoroughly mixed, saving automotive technicians from having to manually mix two-part products.   Significantly Reduce Cleanup Our nozzles simplify the mixing process and make clean up easier because there are no mixing and stirring tools needing to be cleaned. To make cleanup even easier, the tubes are designed to be disposable. Simply throw away the tube and replace it with a clean one next time there is a project. Doubles as a Storage Cap Once you're finished applying a product, you can leave the nozzle on and allow the mix inside to harden. This can serve as a cap for the cartridge. When you're ready to work again, replace the old nozzle with a new one.