3M™ Diamond Lapping Film Sheet 668X is a PSA version of 661X product. Precisely graded diamond particles coated on a polyester film. Provides a consistent, repeatable finish on extremely hard materials. Available in many grades between 0.10 and 30.0 micron.

Use 3M™ Diamond Lapping Film 668X for a consistent finish to extremely hard materials such as ceramics, stone, carbide, exotic alloys, glass and composites. PSA versions of 661X lapping film are designed to give a fast cut, for more efficient processes. They comprise of tightly graded diamond mineral, precision coated on a 3.0 mil polyester film backing, and offer a flatter surface, sharp edges and a uniform finish. Available in discs, sheets and rolls.