Expansion Joints and Pre-Compressed Sealants
Watertight Joint System for Continuous Immersion in Chlorinated,
Saline, Potable or Wastewater Environments
• Watertight, tensionless, arched silicone bellows
• Resists hydrostatic head pressure
• Resistant to saline water
• Resistant to chlorinated water
(up to 5 ppm)
• Resistant to certain effluent concentrations
• NSF/ANSI 61 compliant
• Non-invasive anchoring
• Joint-face adhered
• Bellows never under tension during joint movement
waste water treatment plants (WWTP), etc.
• In 1/4"
increments from 1/2" to 4"
(12mm to 100mm).
+25% and -25% (Total 50%) of nominal material size.
Standard color is "white".
Custom colors are possible but color can impact hydrostatic head
Product DescriptionFeaturing an
arched silicone-bellows sealing surface and backed by an
integral, pressure-resisting impregnated foam backing, Submerseal
provides a lasting solution to joint sealing applications where constant
exposure to water is expected.
joint-face-adhered, pre-compressed, primary
seal for retrofit and new
structural expansion joints and construction joints where continuous or
intermittent immersion or contact with chlorinated water,
saline water, potable water, and certain effluent concentrations is planned.
The system is comprised of
pre-compressed, silicone-and-impregnated-foam hybrid installed into
field-applied epoxy adhesive on the joint faces with the silicone
bellows locked to the joint faces with a field-applied silicone sealant
band and corner bead.
features EMSEAL’s patented microsphere-modified
acrylic impregnation infused into a cellular foam base material and is
coated with a high-grade silicone coating that has been tested for
durability under continuous immersion in chlorinated, saline, potable, and
certain effluent concentrated water.
For submerged applications this product has been tested in a
hydrostatic-head pressure simulator to continuously resist water pressure of
various levels without leaking (request
the test). Reference the table and/or consult
EMSEAL for application-specific conditions.
Chlorine: Resists degradation from contact with chlorinated water
(up to 5 ppm) typically found in swimming pools, fountains, water
parks, etc. including normal and intermittent maintenance "shock"
Acid Wash Resistant:
resistant to up to 50% hydrochloric (muriatic) acid solution for
short contact durations (less than one minute before full dilution and
neutralization) during acid washing as typically recommended for
restoration of badly stained or algae-covered pools.
NSF 61 Compliant: Compliant to NSF/ANSI Standard 61 for contact with
potable drinking water and with FDA Regulation CFR 177.2600 for indirect contact with food.
Non-Invasive Anchoring: There are no hard metal-to-substrate
connections with Submerseal. This includes embedded pins,
anchors, screws, bolts or tracks, trays or rails. The system is locked
to the joint faces by means of the 1) backpressure of the foam; 2) the
epoxy adhesive, and 3) the field-injected silicone sealant band and
corner bead at the joint face to foam-and-silicone bellows interface.
Effluent concentration should be discussed with EMSEAL.
The silicone coating is
compliant to NSF/ANSI Standard 61; NSF Standard 51; FDA Regulation CFR
Submerseal Hydrostatic Head Pressure Resistance:
Depth of Seal
Max. Allowable Liquid Depth
• Substrates must be solid, parallel, plumb and free of any contaminants.
• Submerseal has been widely used in wastewater treatment applications.
However, effluent concentration should be discussed with EMSEAL. If
Submerseal is not suitable to a particular concentration, CHEMSEAL may be
more suitable (contact
IMPORTANT--Cure Time After Installation: Submerseal cannot resist
hydrostatic pressures or chemical concentrations stated unless a minimum of seven days is
allowed for the injected silicone sealant bands and corner beads to
fully cure. Cure time can vary based on environmental conditions.
It is the responsibility of the installer to monitor cure.
produced by coating an impregnated cellular foam with a non-corrosive
liquid silicone sealant.
• The external
silicone facing is factory applied to the foam at a width greater than
the maximum offered extension and is cured before final compression.
• The silicone
application and curing takes place in a factory-controlled environment.
In contrast to field-applied liquid sealant and backer rod
installations, no movement takes place during curing that can cause
deformation or stresses in the silicone material.
compressed, a convex bellows is created in the coating. As joint
movement occurs the bellows simply folds and unfolds virtually free of
tensile stress in the silicone material.
• The foam provides a
resilient backing to the silicone coating, making the system capable of
resisting head pressure.
• Submerseal is supplied in 6.56 LF
shrink-wrapped lengths (sticks). Submerseal is
precompressed to less than the joint size for easy insertion. After
removal from the shrink-wrap and hard board restraining packaging, it
IMPORTANT: The following instructions are a summary. Refer to "Submerseal
Install Data" and/or job-specific instructions of an EMSEAL technician
for complete procedures. FOR PROFESSIONAL USE ONLY. KEEP OUT OF REACH OF
• Store indoors at room temperature. Expansion is
quicker when warm, slower when cold. Substrate temperature must range
between 40°F (5°C) and 110°F (43°C).
•Precautions: Wear chemical-resistant gloves and/or barrier
hand cream when handling liquid sealant or epoxy. Remove materials
promptly from skin with a commercial hand cleaner before eating or
smoking. Avoid inhaling vapors.
•Sequencing: Install factory-fabricated
transition and/or termination pieces first. Connect straight run
material to in-place terminations and transitions. Cut closing pieces
3/8-inch (10mm) longer than the opening to be joined. Compress material
longitudinally to fit.
• Ensure nominal material size matches field measured
• Mix epoxy and trowel a thin layer onto the joint
faces to at least the depth of the
• Remove shrink-wrap packaging and hardboard.
• Thoroughly wipe and clean the silicone facing using
clean lint-free rag made damp with water.
• Insert material into joint to determined depth
below the substrate surface.
• On the end of the material apply a band of liquid
silicone along the pre cured bellows’ faces.
• Join lengths by pushing silicone-coated ends firmly
together. Always push, never pull while installing this material.
If you stretch the product it will shrink back from the joins resulting
• Before the epoxy or the silicone cures, force the nozzle of the
caulking tube between the foam and the substrate and inject a minimum
silicone sealant band,
from the crown of the bellows. Firmly tool the overflow sealant into a defined
corner bead between the top of the silicone bellows and the substrate.
• Clean Up: Remove epoxy or silicone sealant from
equipment before it cures using Acetone or other solvents*. These
solvents are not effective after the epoxy or silicone has cured. Cured
material may be removed by cutting it away with sharp tools or
*(Solvents mentioned or referred to may be toxic and
flammable. Observe solvent manufacturer’s precautions and refer to
Material Safety Data Sheets as well as local and federal requirements
for safe handling and use)
Allow liquid silicone to attain a complete cure before filling area with
liquid (7 days minimum).
Note: if the silicone at joins, sealant bands and corner beads is
not allowed to fully cure, the system will not be capable of resisting
• Maintenance: If the silicone bellows or sealant bands
are damaged but remain intact, cut out the damaged area and recaulk. No
primer is required. If the bond has been affected or the foam backing of
is compromised, remove the damaged area, clean and prepare the
substrates in accordance with instructions and reinstall new material.
Availability and Price
Submerseal is available for shipment internationally.
are available from local representatives and/or directly from the
• The product range is continually being updated, and
accordingly EMSEAL® reserves the right to modify or withdraw
product without prior notice.