333 Polyurethane Expanding Foam
PSC Duct Sealer is a safe, non-hardening sealing compound designed to close irregular openings against air, dust, and water infiltration. Formulated for excellent adhesion to metal, masonry, wood, and plastic surfaces, it also provides effective vibration dampening. With a dielectric strength of 200 V/Mil at a minimum thickness of .030″, this asbestos-free, odorless putty is easy to apply, safe for skin contact, and ideal for indoor and outdoor use in HVAC, electrical, and utility applications.
FEATURES:
- Sealing cable entries, wall penetrations, and duct joints
- HVAC and electrical enclosures
- Utility boxes and metal cabinets
- Any irregular gap where moisture, air, or debris intrusion is a concern
Applications:
- Sealing partition walls
- Cable and pipe penetrations
- Chimney seams
- Roof protection
- Wall panels