10 #7 Solid Black Rubber Stopper with Center hole, Lab or water fountain pump

Description

You are Buying 10 #7 Solid Black Rubber Stopper with 5/16th" Center hole, Lab or water fountain pump Use in Laboratories or I use them to pass the pump cord through on water fountains and Ponds, Used with silicone or a waterproof putty. You only need to cut a slit in them to open and pass the pump cord through, We use a waterproof putty to ensure no water loss! It fits into a Regular 1" PVC Sleeve fitting, I also use 1" thin wall PVC as a chase inside my Fountain pedestal for the cord to run through. These are also great for self-contained Fiberglass and rubber Koi ponds. I listed these as used because I cut the slits in them, They can be ordered as split or unsplit. Otherwise, they are new