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Intertape PG21 High Temperature Masking Tape

Intertape PG21 High Temperature Masking Tape

Intertape PG21 is a premium high temperature masking tape engineered for automotive, aerospace, and transportation vehicle manufacturing where clean paint lines, solvent resistance, and reliable removal after baking cycles are required. PG21 is rated to 325°F and performs well in wet strip applications, conforming easily to curves, corners, and irregular surfaces without lifting or flagging.

Its smooth crepe backing delivers high tensile strength and excellent paint line definition. PG21 meets ASTM D6123/D6123M, CID AA-883B, and BAC5317 specifications — making it a qualified tape for critical aerospace and OEM automotive masking programs.

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Specifications Applications Compliance Standards PG21 FAQ
325°F temperature rating Automotive and aerospace use Wet strip performance Clean paint line results
Max Temperature
325°F — clean removal after bake cycle
Primary Markets
Automotive, aerospace, transportation manufacturing
Compliance
ASTM D6123, CID AA-883B, BAC5317

PG21 Technical Specifications

Property Value
Backing Smooth crepe paper
Adhesive type Rubber-based pressure sensitive
Temperature resistance 325°F (163°C)
Wet strip performance Yes — performs well in wet strip applications
Solvent resistance Resistant to strong solvents and paints
Conformability Excellent — corners and irregular surfaces
Paint line definition Clean, well-defined edge — resists paint flaking
Removal Clean removal in warm or cold environments
Compliance standards ASTM D6123/D6123M, CID AA-883B, BAC5317

PG21 Applications

Automotive Manufacturing

PG21 is widely used for OEM automotive body painting, primer masking, and clear coat applications where bake oven cycles require a tape that removes cleanly after exposure to elevated temperatures without adhesive transfer or paint bleed.

Aerospace and Defense

Qualified to BAC5317 and CID AA-883B, PG21 is approved for aerospace masking programs including surface preparation, primer masking, and protective coating applications on aircraft structures and components.

Transportation Vehicle Manufacturing

Bus, rail, and heavy vehicle manufacturers use PG21 for complex masking jobs that involve curved body panels, window frames, and multi-surface areas requiring a tape that holds edges without lifting during spray or bake cycles.

Wet Strip Applications

PG21 performs well in wet strip — meaning it can be removed while paint is still wet without smearing the paint line. This speeds production throughput and reduces the risk of paint contamination from tape left on too long.

Compliance and Approvals

Standard Governing Body Relevance
ASTM D6123 / D6123M ASTM International Standard specification for pressure sensitive masking tape for automotive refinishing
CID AA-883B U.S. Government / DoD Commercial item description for masking tape used in military and government vehicle programs
BAC5317 Boeing Boeing process specification for masking materials used in aerospace surface treatments and coatings

Intertape PG21 High Temp Masking Tape FAQ

What is the highest temperature that PG21 will remove cleanly

PG21 is rated to 325°F (163°C) and removes cleanly after exposure to that temperature in bake oven and cure cycle applications. It performs well in both warm and cold removal environments.

What are the primary markets using Intertape PG21

Automotive OEM and refinish, aerospace and defense, and transportation vehicle manufacturing are the primary markets. PG21's qualification to BAC5317 and ASTM D6123 makes it a preferred tape for production masking in regulated manufacturing environments.

Does Intertape PG21 work well in cornering applications

Yes. PG21's smooth crepe backing provides excellent conformability around curves, corners, and irregular surfaces without lifting, flagging, or losing adhesion — making it suitable for body panel masking and complex geometry applications.

Is PG21 resistant to solvents and paints

Yes. PG21 is engineered to resist strong solvents and paints, preventing bleed-through and maintaining a clean, well-defined paint line throughout the masking cycle.

What does wet strip performance mean for a masking tape

Wet strip means the tape can be removed while the applied paint or coating is still wet, without smearing or damaging the paint line. This is a production efficiency advantage in high-volume automotive and industrial painting operations.

Do you have additional questions about Intertape PG21

Contact our team directly at info@customtapes.com with your application details, width requirements, and quantities.
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