Set of three 3d-printed (PETG) lids for jars used in vintage L&R Master Precision watch cleaning machines. The top of the lid is debossed with the L&R logo. These lids can replace your machine's original bakelite lids which are easily broken.

Users considering using this lid for long-term storage of watch cleaning & rinsing solutions should take note of the following:

• In general, the performance of this lid as an airtight/leakproof closure is not guaranteed.
• Compatibility of common 3d printing filaments (e.g. PETG) with these chemicals is untested and users should watch for softening or embrittlement of the printed cover.
• The FKM/Viton (fluoroelastomer) o-ring is compatible with the chemicals used in watch rinsing solutions, such as naphtha. However, some the o-ring is not compatible with some chemicals used in watch cleaning solutions, such monoethanolamine and oleic acid; these will degrade the o-ring.