- Overview
- Applications
- Technical Data
- Warranty
PROTEX 1321D-3, Protective Film
Protective Film
Mask-Off PROTEX 1321D-3 Film with synthetic rubber resin
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. Prior testing is necessary to determine individual requirements.
This product is not intended for fly-away applications.
Available Sizes:
36″ X 100 yd
48″ X 100 yd
Call for Custom Converting and Slitting.
In Stock Item

Applications
INDUSTRIES: AerospaceAPPLICATION: Surface Protection
APPLICATION DESCRIPTION:
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. Prior testing is necessary to determine individual requirements.
APPLICATION NOTES:
Application surface: MetalsTechnical Data
BRAND: Mask-OffMATERIAL 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 |
DATA SHEET:
PROTEX 1321D-3, Protective Film (PDF)
NOTES:
Physical and performance characteristics shown are obtained from tests recommended by vendor. Quality Assurance and Technical Service Departments do not represent a guarantee of product performance. Individual rolls may vary slightly from these averages. The user should determine whether the product is fit for a particular purpose and is suitable for the user's method of application before use.
The information listed above has been obtained from controlled laboratory tests and is reliable, but should not be used for the purpose of writing specifications. It is offered in good faith, but without guarantee, as conditions and methods of use of our products are beyond our control. It is recommended that the prospective user determine the product suitability before adapting for commercial use.
Warranty
Physical and performance characteristics shown are obtained from tests recommended by vendor. Quality Assurance and Technical Service Departments do not represent a guarantee of product performance. Individual rolls may vary slightly from these averages. The user should determine whether the product is fit for a particular purpose and is suitable for the user's method of application before use.
The information listed above has been obtained from controlled laboratory tests and is reliable, but should not be used for the purpose of writing specifications. It is offered in good faith, but without guarantee, as conditions and methods of use of our products are beyond our control. It is recommended that the prospective user determine the product suitability before adapting for commercial use.