Introduction
Ressaseal® RYZW-U Series fireproof intumescent seal is a kind of adhesive-backed seal with sodium silicate intumescent core inside and hard PVC casing outside, are widely used in fireproof windows fire protection sealing.
RYZW-U series fireproof intumescent seal activates at temperature between 100℃ to 120℃ and expands 3- 5 times than original from thickness direction at 140℃ to seal the space between glass and profile to prevent the smoke and fire spreading to safe inside. When meet fire, it will fill the gap more rapidly than the other material intumescent seals.
U Shape Rigid Intumescent Seal Size Chart and Principle
| Product Code | T x W x L (mm) | Expansion | Drawing | |
RYZW-U Series | RYZW-U |  | 3-5 times |  |
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