Metacaulk 835+ Spray, 5 .gal Fast Cure Silicone Firestop Sealant

Metacaulk 835+ Spray is an elastomeric silicone-based firestop sealant designed to prevent the spread of flames, hot gases, and water through joint openings. It cures to a flexible seal and is suitable for areas subject to significant movement. This product is ideal for use in firestopping applications within electrical distribution, lighting solutions, wire and cable installations, and switchgear systems where fire containment and safety are critical.

Specifications

• Manufacturer: RectorSeal
• Manufacturer Part #: 66295
• Product Weight: 44 lbs
• UPC: 021449662956
• Chemical Family: Organic/Inorganic
• VOC Content: 25 grams per liter, less than 3% by weight
• Specific Gravity: 1.001 - 1.005 at 25 ºC (77 ºF)
• Vapor Pressure: Less than 5 mm Hg
• Evaporation Rate: Greater than 1 (Ethyl Acetate = 1)
• Appearance/Odor: Viscous paste
• Flash Point: None
• Boiling Point: Not available
• Storage Temperature: Do not store below 35 °F to prevent freezing and container rupture
• Hazard Classification: Causes skin and eye irritation, may cause allergic skin reaction
• Safety Certifications: Certified Clean Air Gold by Intertek (Certificate Number CA-42996-2021a)

Features

• Elastomeric and flexible seal suitable for dynamic joints and areas with significant movement
• Silicone-based formulation for superior firestop performance
• Prevents the spread of flames, hot gases, and water through joint openings
• Fast curing for efficient application and reduced downtime
• Low VOC content compliant with environmental standards
• Non-flammable with no flash point, enhancing safety during storage and use
• Compatible with various substrates in electrical and fire protection installations
• Certified for clean air quality, supporting healthy indoor environments

Downloads & Links

• Certified Clean Air Gold Certificate
• Safety Data Sheet
• SDS - Spanish
• Spec Sheet