Pre-installation handling: Upon receiving your crystal we recommend NOT taking it out of the package and handling it. This is because any finger prints or marks that touch the underside of the crystal can compromise clarity and are not easily removed. Light hairline marks from packing and shipment may sometimes be present on the outer/top surface of the crystal. These are easily buffed by your watchmaker upon installation.

Cleaning after installation: We recommend cleaning dirt and or smudges with a clean cotton cloth.

Scratch Removal: Minor scratches can be easily removed using polywatch and a clean dry cotton cloth.

Deeper scratches can be removed by wet sanding with incrementally finer sandpaper from 1000 to 2000 grit before moving to polywatch. (Assure that your watch is water resistant prior to wet sanding).

Avoid cleaning products that contain alcohol, ammonia, aromatics, and other abrasives. Abrasive cleaning agents such as these can cause cracks and microfractures in the surface of the acrylics. Using proper cleaning procedures outlined above will assure optimal performance, clarity and longevity of your crystal.

Installation should only be carried out by professional watchmakers experienced in servicing vintage Rolex.

For Watchmakers:

In order to obtain proper tension of retaining ring over crystal, use of Rolex no. 1006 or Fercal tool should be used.

We recommend very light application of silicone grease on the inside of retaining ring wall to assure smooth depression over crystal and optimal sealing.

The D22 may require retaining ring compression particularly if replacing a service/later T22 variant. Do not use silicone lubricant on the inside of the bezel for this or the thinner crystals such as D29, D21, & D38.

The D39 is purposefully designed to fit tighter over the rehaut. A crystal press may be used to assure full depression prior to retaining ring install.

For specific pressure testing parameters or for any other technical questions please contact us at support@truedome.com