ORACLE GROOVE ISOLATOR
This is an original ORACLE dense rubber mat for DELPHI and PREMIERE MK I - MK III
NEW OLD STOCK - made in France
The ORACLE GROOVE ISOLATOR is made from a vinyl based compound which is electrolytically positive charged. Since all record vinyl exhibits a negative charge, the two are electrostatically opposite therefore creating the apparent "stickyness" through electrostatic attraction. This is not a chemical bond, such as what would be found with Sorbothane or even glue.
This method was chosen because an electrostatic bond leaves no chance for a chemical residue on the record itself. This does happen with the silicon Sorbothane mats and particularly with cork mats, albeit the deposits are infinitesimally small.
The other advantage of an electrostatic bond is the direct cancellation of negative static build-up in the record due to triboelectric stresses.
The ORACLE mat doesn't really stick to the record, both are drawn to each other electrostatically. This is why it is important to keep this mat fastidiously clean, since the forces are so relatively weak even the smallest particles on the mat will inhibit this static process. ORACLE BRILLIANCE solution is an excellent cleaner.