Those numbered plasic locks are used in industry,not only for chastity. Does anyone know a retailer that sells them? Lowes, Home Depot, Ace, Locke Supply all are a no go.
Try normal cable ties either different colours or with a number 1,2,3 etc wrote on the locking bit. Cheap as chips
Only problem with that is you can always cut it off and put another one on later and write the same number. Not that he would do that but...it's just not as secure as a serial number on a sealed lock. I agree. Online is the best way to get them. I'll be honest and say I'm a little biased since I sell them here: Plastic Locks. But just to be fair, here are some other links: Plastic Locks 2 & Plastic Locks 3.
Patience is a vertu. However if she is in a rush to keep you locked up mig welder from hire shop ? Xx Wendy
A lot of Adult shops especially BDSM places should have them if they sell chastity devices as well.. Dianne
I have a batch, like the red one shown on the picture in my gallery. I'd happily supply you. Get in touch via PM if you are interested.