The Internal Joint Seals are watertight compression seals that reduce groundwater infiltration, increasing waste water treatment capacity in underground pipes. Made of 7.5" high quality rubber, Internal Joint Seals meet or exceed the physical requirements of ASTM C-923. The stainless steel expansion band to be used meets or exceeds ASTM A-240, Type 304 standards. Designed for new or existing installations, excavation is not necessary for use.
- Provides watertightness and movement flexibility.
- Reduces excess clear water in sanitary sewer systems.
- Easily installed mechanically to the inside of existing pipe and manholes.
- Mechanical seal, does not rely on chemical bond.