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    Final Lapping Film

    To achieve a return loss of -55 dB or better while maintaining a controlled amount of fiber undercut or protrusion, a specialized Final Polish Film is required. These films remove the fine scratches left from the preceding polishing steps and help achieve the precise fiber height geometry needed for optimal fiber optic performance. This is typically accomplished using a sub-micron Silicon Dioxide lapping film.

    Fiber Optic Center offers both ÅngströmLap®, 3M™ and Seikoh Giken final lapping films, listed below for easy comparison based on technical specifications to help you choose the right film for your polishing equipment and application.
    Part # Brand Particle Type Size Orientation Grit Size Film Color Tape Total Thickness Surface Roughness Base Film Material Base Film Thickness Process Parameters Type PSA Backed Center Hole Bonding Resins

    863X-503N

    		 3M™ 863X Silicon Dioxide 5" (127mm) Disc 0.02μm White n/a n/a Polyester 3 mil (75 μm) n/a No No n/a

    863X-663N

    		 3M™ 863X Silicon Dioxide 6" x 6" (152.4mm x 152.4mm) Sheet 0.02μm White n/a n/a Polyester 3 mil (75 µm) n/a No No n/a

    863XW-273N

    		 3M™ 863XW Silicon Dioxide 2.75" (69.85mm) Disc 0.02μm White n/a n/a Polyester 3 mil (75 µm) n/a No No n/a

    863XW-4253N

    		 3M™ 863XW Silicon Dioxide 4.25" (107.95mm) Disc 0.02μm White n/a n/a Polyester 3 mil (75 µm) n/a No No n/a

    863XW-503N

    		 3M™ 863XW Silicon Dioxide 5" (127mm) Disc 0.02μm White n/a n/a Polyester 3 mil (75 µm) n/a No No n/a

    863XW-663N

    		 3M™ 863XW Silicon Dioxide 6" x 6" (152.4mm x 152.4mm) Sheet 0.02μm White n/a n/a Polyester 3 mil (75 µm) n/a No No n/a

    865X-273N

    		 3M™ 865X Silicon Dioxide 2.75" (69.85mm) Disc 2μm White n/a n/a Polyester 3 mil (75 µm) n/a No No n/a

    865X-503N

    		 3M™ 865X Silicon Dioxide 5" (127mm) Disc 2μm White n/a n/a Polyester 3 mil (75 µm) n/a No No n/a

    865X-663N

    		 3M™ 865X Silicon Dioxide 6" x 6" (152.4mm x 152.4mm) Sheet 2μm White n/a n/a Polyester 3 mil (75 µm) n/a No No n/a

    869XW-503P

    		 3M™ 869XW Silicon Dioxide 5" (127mm) Disc 0.02μm White n/a n/a Polyester 3 mil (75 µm) n/a Yes No n/a

    FOS-22

    		 FOS-022 n/a 5" (127mm) Disc n/a Translucent n/a n/a n/a 3 mil (75 µm) n/a No No n/a

    ULT026051103N100

    		 ÅngströmLap® Ultimas™-U Silicon Dioxide 4.25" (110mm) Disc n/a Natural (white) 78.5 ± 2.0 µm 0.09 ± 0.05 µm Polyethylene terephthalate 3 mil (75 µm) NEC3 No No n/a

    ULT02605203N100

    		 ÅngströmLap® Ultimas™-U Silicon Dioxide 2" (50.8mm) Disc n/a Natural (white) 78.5 ± 2.0 µm 0.09 ± 0.05 µm Polyethylene terephthalate 3 mil (75 µm) NEC3 No No n/a

    ULT02605273N100

    		 ÅngströmLap® Ultimas™-U Silicon Dioxide 2.75" (69.85mm) Disc n/a Natural (white) 78.5 ± 2.0 µm 0.09 ± 0.05 µm Polyethylene terephthalate 3 mil (75 µm) NEC3 No No n/a

    ULT02605403N100

    		 ÅngströmLap® Ultimas™-U Silicon Dioxide 4" (101.6mm) Disc n/a Natural (white) 78.5 ± 2.0 µm 0.09 ± 0.05 µm Polyethylene terephthalate 3 mil (75 µm) NEC3 No No n/a

    ULT02605503N100

    		 ÅngströmLap® Ultimas™-U Silicon Dioxide 5" (127mm) Disc n/a Natural (white) 78.5 ± 2.0 µm 0.09 ± 0.05 µm Polyethylene terephthalate 3 mil (75 µm) NEC3 No No n/a

    ULT02605663N100

    		 ÅngströmLap® Ultimas™-U Silicon Dioxide 6" x 6" (152.4mm x 152.4mm) Sheet n/a Natural (white) 78.5 ± 2.0 µm 0.09 ± 0.05 µm Polyethylene terephthalate 3 mil (75 µm) NEC3 No No n/a

    ULT02605803N100

    		 ÅngströmLap® Ultimas™-U Silicon Dioxide 8" (203.2mm) Disc n/a Natural (white) 78.5 ± 2.0 µm 0.09 ± 0.05 µm Polyethylene terephthalate 3 mil (75 µm) NEC3 No No n/a

    ULT026FH1103N100

    		 ÅngströmLap® Ultimas™-P Silicon Dioxide 4.25" (110mm) Disc n/a Natural (white) 79.5 ± 2.0 μm 0.11 ± 0.07 μm Polyethylene terephthalate 3 mil (75 µm) PRO No No n/a

    ULT026FH203N100

    		 ÅngströmLap® Ultimas™-P Silicon Dioxide 2" (50.8mm) Disc n/a Natural (white) 79.5 ± 2.0 μm 0.11 ± 0.07 μm Polyethylene terephthalate 3 mil (75 µm) PRO No No n/a

    ULT026FH403N100

    		 ÅngströmLap® Ultimas™-P Silicon Dioxide 4" (101.6mm) Disc n/a Natural (white) 79.5 ± 2.0 μm 0.11 ± 0.07 μm Polyethylene terephthalate 3 mil (75 µm) PRO No No n/a

    ULT026FH503N100

    		 ÅngströmLap® Ultimas™-P Silicon Dioxide 5" (127mm) Disc n/a Natural (white) 79.5 ± 2.0 μm 0.11 ± 0.07 μm Polyethylene terephthalate 3 mil (75 µm) PRO No No n/a

    ULT026FH663N100

    		 ÅngströmLap® Ultimas™-P Silicon Dioxide 6" x 6" (152.4mm x 152.4mm) Sheet n/a Natural (white) 79.5 ± 2.0 μm 0.11 ± 0.07 μm Polyethylene terephthalate 3 mil (75 µm) PRO No No n/a

    ULT026FH803N100

    		 ÅngströmLap® Ultimas™-P Silicon Dioxide 8" (203.2mm) Disc n/a Natural (white) 79.5 ± 2.0 μm 0.11 ± 0.07 μm Polyethylene terephthalate 3 mil (75 µm) PRO No No n/a

    XF5D

    		 Seikoh Giken Silicon Dioxide 5" (127mm) Disc n/a n/a n/a n/a n/a n/a n/a No No n/a