flavor flav Posted November 20, 2006 Report Share Posted November 20, 2006 i'm trying to find a replacement for a vintage omega seamaster day-date. case 1660125. ofrei has no listed crystal for this case. it's plexiglass and domed. sides have 1.5mm rehaut and measures 31.47mm diameter. does anyone know if a standard generic sapphire or mineral domed crystal will fit? they basically do not list clearance to the dial. generic size closest is 31.5mm i was thinking to be safe try this one and heat the case and freeze the crystal to fit......any advice? the factory acrylic crystal scratches too easy and replacement seems very hard to find oem part. Link to comment Share on other sites More sharing options...
flavor flav Posted November 20, 2006 Author Report Share Posted November 20, 2006 Link to comment Share on other sites More sharing options...
krustybrand Posted November 20, 2006 Report Share Posted November 20, 2006 Interesting. I can't find a reference of any type to that case number in the current Omega Red Book. Your movement serial number dates the watch to 1979 if I'm not mistaken. Link to comment Share on other sites More sharing options...
RWG Technical Posted November 20, 2006 Report Share Posted November 20, 2006 i'm trying to find a replacement for a vintage omega seamaster day-date. case 1660125. ofrei has no listed crystal for this case. it's plexiglass and domed. sides have 1.5mm rehaut and measures 31.47mm diameter. does anyone know if a standard generic sapphire or mineral domed crystal will fit? they basically do not list clearance to the dial. generic size closest is 31.5mm i was thinking to be safe try this one and heat the case and freeze the crystal to fit......any advice? the factory acrylic crystal scratches too easy and replacement seems very hard to find oem part. You order all Omega crystals by case number...there are thousands of crystals, if you send them the case number, they will send you the crystal. A plastic crystal has to be replaced with a plastic crystal...due to the way the crystal is retained to the case. If your looking for a replacement other than an Omega one, then you measure the diameter of the case where the crystal sits (not the crystal itself) and from this measurement you add 0.50mm and order a plastic crystal this diameter. This is the correct sizing for retaining a compression crystal. If you can't get a genuine crystal from Ofrei, let me know on PM, I have a good supplier and may be able to find one. I would recommend genuine Omega crystal vs an aftermarket one... RG Link to comment Share on other sites More sharing options...
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