MasterSeal 720 - A general purpose polysulphide joint sealant
Formerly Masterflex 720
A two component sealing compound based on
polysulphide polymers blended with fillers and
chemical curing agents, which cure after mixing to
form a durable rubber like seal.
Where is MasterSeal 720 applied?
Typical applications include joints in curtain walls,
floor and wall expansion joints, between precast
units. MasterSeal 720 is NOT recommended for
use as a joint sealant in industrial flooring
applications subject to wheeled traffic.
instances use MasterSeal 310 / 320 / 480
depending upon requirements of the floor and
What are the advantages of MasterSeal 720?
This sealant is highly elastic and is able to withstand
continuous extension and recovery. It may be used
with most common building materials such as
concrete, plaster, brick and stone.
superior resistance to many common chemicals fuel
oils and solvents, ultra violet light and ozone,
making it suitable for exterior use, and for use
where the sealant is subjected to contact with
chemicals solvents and oils.
MasterSeal 720 complies with selected
requirements of SABS 110.
Technical Data Sheet