PROTEX 1321D-3 - Protective Film (Mask-Off)

Custom Converting & Slitting Available. Call 407-426-9175 PROTEX 1321D-3 Film With Synthetic Rubber Resin Although we stock many of the Protex brand tapes their 1321D-3 is not one that we carry in inventory.  Because it is a made-to-order tape there is normally a four (4) week lead time for us to receive it from the manufacturer after receipt of your purchase.   Protex 1321D-3 Clear, Linered, Polyester Film Tape. Complies with Boeing specification BAC 5034, Type IV, Class I, Grade A.   Made in USA Size: 36" x 100 Yards PROTEX 1321D-3 is a 3 mil clear polyester film with a pressure sensitive adhesive, designed for surface protection of alclad, polished aluminum and other types of metal surfaces during various machining operations, such as drilling, routing, milling, and some forming operations. It will prevent aluminum chips from scratching the surface of the metal during various operations. PROTEX 1321D-3 is also used to block out areas not to be treated during various anodize, alodine and chemical milling operations.  DO NOT USE ON COPPER, BRASS OR ANODIZED ALUMINUM WITHOUT PRIOR TESTING. OUTDOOR EXPOSURE IS NOT RECOMMENDED. This product is not intended for fly-away applications. Specifications Boeing BAC 5034, Type IV, Class I, Grade A, NSN 8135-00-946-2090 APPLICATION NOTES: Application surface: Metals Technical Data Mask-Off PROTEX 1321D-3 MATERIAL DESCRIPTION: ADHESIVE TYPE: Pressure-Sensitive CONSTRUCTION: Single Coated LINER: Flatback TECHNICAL DATA: ADHESIVE LAYER: Rubber ADHESIVE LAYER DESCRIPTION: Synthetic rubber resin BACKING/CARRIER MATERIAL: Film THICKNESS: 3 mil ADHESION TO STEEL: oz/inch width 30-40 (-5/+7) (At time of manufacture) PSTC-1 (Modified) TENSILE STRENGTH: PSI/mil 30,000 ELONGATION: % M.D.60-110 TEMPERATURE OPERATING: No heat   Protex 1321D-3 Tech Data Sheet         Additional Information   Nominal Tape Widths vs Actual Widths Tape rolls are cut to standard tape industry metric widths of approx. 24mm per 1-inch of nominal width ordered. As a result ACTUAL tape widths are normally 5% narrower than the NOMINAL width shown in inches. Examples: 1" Nominal width = 15/16" (24mm) Actual width 2" Nominal width = 1-7/8" (48mm) Actual width 3" Nominal width = 2-13/16" (72mm) Actual width Note that tape rolls are NOT guaranteed to be splice-free.