These snap on capseals are a great option for protecting your product. You can keep out the grime, dirt, dust and other unwanted intruders by covering your plugs with a capseal. The snap on capseal is an easy one to use. Just snaps on; no crimping tool needed. They are chemically resistant and the positive grippers engage the drum closure tightly and securely, and there are no metal parts to rust or corrode. Make sure you are getting the right style for your drum.