Sealant Tape (also known as vacuum bag sealant tape, tacky tape, or putty tape) is a flexible, non-hardening butyl rubber-based tape used to create an airtight seal between vacuum bag film and the tool/mold surface. Applied along the perimeter of the tool, this tape provides a reliable vacuum barrier that allows atmospheric pressure to compact laminates during curing. It remains flexible and tacky throughout the cure cycle, then removes cleanly without residue after demolding. Available in multiple widths and temperature ratings for room temperature, oven, or autoclave processing.
| Benefit | Explanation |
|---|---|
| Airtight Seal | Prevents vacuum leaks – maintains vacuum integrity throughout cure |
| Flexible & Conformable | Conforms to irregular tool surfaces, corners, and edges |
| Non-Hardening | Remains tacky and flexible during entire cure cycle |
| Clean Removal | Peels off easily – leaves no residue on tool surface |
| Temperature Resistant | Withstands autoclave and oven curing up to 260°C |
| Vacuum Compatible | Does not out gas excessively under vacuum |
| Easy Application | Hand-apply without special tools or equipment |
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