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Donseal® PU440
One component, non sag, elastomeric polyurethane sealant with high tear and weather resistance (Formerly known as Flexseal PU440)
Hints for Application
- Make sure the joint is clean, sound, dry, and free from any contamination.
- Use a joint backing rod to provide the correct joint depth and support the applied sealant.
- Make sure the sealant is not exposed to weathering conditions until it is fully cured.
- Use masking tape on each side of the joint to maintain a clean finish.
- Tool the sealant surface to ensure complete contact and good surface finish. Remove the masking tape directly after tooling.