The Classic Internal
Chimney Seal is available in standard 8 3/8", wide 10",
and extra-wide 13". The sleeves are made of rubber which conforms
to the physical requirements of ASTM C-923, as modified, with a
minimum of 3/16 inch thickness for durability and resistance to
puncturing or tearing. The Classic Internal Chimney Seal pleated
configuration provides for a minimum 2 inch vertical of 1/2 inch
horizontal movement before stretching the material. Flexibility
of the seals material allows one size to fit a frame or chimney
diameter differential up to 20%.
- Designed for installation
in either existing or new manholes.
- Does not require excavation
or manhole entry.
- Versatile - Fits virtually
any size or type of manhole.
- Available in three
- Optional rubber extensions
allow complete chimney coverage.
- Reusable and adjustable.
- Easy to install.
- Mechanical seal, does
not rely on chemical bond.
- Not weather dependent.