Firestop Sealants 

• Protect against the spread of fire, smoke, gases and water through penetrations and joints
• Available in silicone, elastometric and latex formulations

• CLK™ silicone sealant:
• Up to 4 hour ratings
• Flexible cure: allows for movement or vibration
• Does not require cable derating
• Non-sag: no damming required; suitable for overhead applications
• Excellent flowability, self-leveling
• Quick, easy installation
• Smooth surface
• Non-shrinking
• Non-toxic
• Easily repentrated
• Acoustically tested: reduces noise transmission
• ES1399™ elastomeric sealant:
• Up to 4-hour ratings
• Water-based acrylic latex – easy clean-up
• Economical
• Flexible cure: allows for movement or vibration
• Paintable
• Water resistant
• Acoustically tested: reduces noise transmission
• LBS3™ latex sealant:
• Up to 3-hour ratings
• Water-based  – easy clean-up
• Flexible cure: allows for movement or vibration
• Highly intumescent
• Paintable
• Water resistant
• No solvents, silicones or outgassing
• Acoustically tested: reduces noise transmission
• Excellent freeze/thaw resistance

Nelson Firestop CLK Silicone Sealant Technical Data 2003-2011

Nelson Firestop CLK Silicone Sealant MSDS 2002-2009

Nelson Firestop ES1399 Elastomeric Sealant Technical Data 03-2011

Nelson Firestop ES1399 Elastomeric Sealant MSDS 03-2011

Nelson Firestop LBS3 Intumescent Sealant Technical Data 03-2011

Nelson Firestop LBS3 Intumescent Sealant MSDS 09-2003

MCT Multi-Cable Transit Systems

MPS Multi-Plug System