Replacing the Screw top for " Better Boat Air Horn." Need help.

[tcumberb]

Need help in replacing the Screw top for " Better Boat Air Horn." bought 2 of them lost one and my neighbor, lost the other. Need ideas to replace the top. Thanks

 

[Bob_VT]

Need help in replacing the Screw top for " Better Boat Air Horn." bought 2 of them lost one and my neighbor, lost the other. Need ideas to replace the top. Thanks

Buy new ones and keep the others as refills............