Water Proofing your Time Piece. Joints O-Ring.

Joints O-Ring

For all replacement Rubber Seal O-Rings for water proofing your Time Pieces, Round, Standard, Flat, Snap off and Screw off for back Case covers.
Micro Seals, for Battery Hatches, Push Buttons, Plastic Seals for Time Piece Glasses and also Red Hard Seals, these come in various Sizes the most common are 17.20, 18.70, 19.70, 20.80, 21.60, 23.70, 24.90, 25.50,26.59, 27.40, 28.50, 28.75, 29.50, 30.40, 31.00, 33.40
We also provide Straps, Expanding Bands, Bracelets Alberts, Batteries, Lithium, Alkaline, Silver Oxide, for watches, Calculators, Games, Car Key Fobs, Cordless and Mobile phones.
If you have any difficulty ordering any item from this Web Site please let us know, and we will try to rectify it as soon as possible.
There are two types of seals for back cases.
Time Pieces that have round seals are found in screw off back case covers and flat seals are found in snap off back case covers.
Selecting the correct size for round seals.

Quick View

Screw off the back case cover from the movement holder. Look for the groove that runs around the edge of the movement holder, using a pair of Digital Callipers take the inside measurement of the groove that runs around the movement holder this gives you the inside diameter of the seal, then take the outside measurement of the groove from one side of the movement holder to the other, this gives you the outside measurement.

Quick View

Selecting the correct size of a flat seal,
snap off the back case cover from the movement holder.
Take the inside measurement from one side of the movement holder to the other to where the back case cover fitted,
this gives you the inside diameter of the seal.
The outside diameter is determined by the lip around the back case cover

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Seiko Silicon Grease for Gasket Rings

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