Features
■ Long life
■ Produces superior surface finish
■ Reduces overall process time
■ Produces high yields
■ Eliminates slurries
■ Consistent results throughout life of product
■ Used in many applications and on a multitude of machines

Applications
■ Fiber optic connector processing, flat lapping, roll superfinishing. Mineral Size Grading Chart Substrates Ceramics, glass, stone, carbide, composites, exotic alloys and other hard materials. Bonding Resins 3M™ Diamond Lapping Films 631X, 641X, 651X and 661X/668X: Standard resin 3M™ Diamond Lapping Films 660XV, 662XW/666XW: Softer, tougher resin system with higher diamond content 3M™ Diamond Lapping Films 663X/664X: Hardest resin Technical Data November, 2007 Converted Forms Sheets, Discs and Rolls. Maximum width 12 in. Backing Polyester Film Nominal thickness: 1 mil, 1.5 mil, 2 mil, 3 mil Actual thickness: .92 mil, 1.46 mil, 1.97 mil, 2.97 mil, (± 0.05) Ultimate tensile strength - 26,500 psi (typical) Micron Grade Color (nominal) 0.1 Green 0.5 White 1.0 Lavender 1.5 Light Green 3.0 Pink 6.0 Brown 9.0 Blue 15.0 Orange 20.0 Burgundy 30.0 Green 45.0 Amber 60.0 Amber 3M I.D. Number Backing Thickness 1 mil 1.5 mil 2 mil 3 mil 3 mil 3 mil 3 mil Plain back 631X 641X 651X 660XV 661X 662XW 663X PSA back n/a n/a n/a n/a 668X 666XW 664X