Due to many enquiry for these generic Twin-seal and Tri-seal crown + tubes.
Plus i am also using them for repair/replacement/modification for many sub homage, Seiko and Citizen watches.
Stem thread are 0.9mm.
Decided to purchase some and stock them instead of just looking for them when needed . So here they are.
Price : see the item description.
Shipping : $6 (international airmail + tracking)
Interested, pls email me at
7mm tri-seal <triplock> crown + tube ($22)
7mm twin-seal crown + tube ($22)
6mm twin-seal crown + tube ($22)
5.5mm twin-seal crown + tube ($22)