Grimestopper

GKL's GrimestopperTM is inexpensive take on lock cylinder weather guards. This value added product can be used with mortise and rim cylinders, cam locks, switch locks etc. GrimeStopper stands up to the harshest cold weather, protecting against extreme moisture and sealing out dirt or any foreign matter in the most rugged environments.
The patent pending spring assisted closure cap can be flipped open with your finger or with the tip of a key. It remains open until you're done and with a simple touch, the cover snaps shut to once again, protect the cylinder. Information: 888 446-4337 or www.gklproducts.com