Metacaulk 835 Firestop Silicone Sealant
Manufacturer RectorSeal Fire Stopping Products
SKU: 835
Metacaulk 835 Firestop Silicone Sealant

Metacaulk® 835+ is a silicone based sealant designed for use on PVC pipe - closed (pressure systems), EMT, insulated and uninsulated steel pipe, glass pipe, construction and control joints and interior expansion joints. Metacaulk® 835+ is a flexible, non-sag low odor sealant for exterior or interior use and can be used in systems where dynamic movement is expected.

Metacaulk® 835+ can be used in interior or exterior expansion and control joints and interior or exterior penetrations.  


  • EMT, Semi-Rigid and Rigid Conduit
  • Steel Pipe
  • Wall-to-Decking Transition Joints
  • Wall-to-Floor Transition Joints
  • Wall-to-Floor Control Joints
  • Floor-to-Floor Control Joints

Metacaulk 835+ Features

  • A single component penetration sealant system-no mixing and no required additives
  • Use in Interior or Exterior Expansion, Contraction and Control Joints
  • Use in Exterior and Interior Penetrations
  • Neutral, Moisture Cure
  • D O T Classifications is not regulated
  • Non-Slump Formula
  • Applied with a conventional caulking gun, trowel or with pumping equipment
  • Sound Transmission Class (STC) 55*

*Tested in a UL 411 wall assembly/section to ASTM E90.


Metacaulk® 835+ | Product Information

Product Code Size Quantity Per Case
10.15 oz Cartridge
5 Gallon
20.2 oz Sausage Caulk Grade
20.2 oz Sausage Self Leveling


Additional Product Literature
Data Sheet
Safety Data Sheet