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FST

FSTFST

FST

™

™™

™

Foam Sealant

Foam SealantFoam Sealant

Foam Sealant

T E C H N I C A L

T E C H N I C A L T E C H N I C A L

T E C H N I C A L D A T A S H E E T

D A T A S H E E TD A T A S H E E T

D A T A S H E E T

Description:

FST

™

Sealant is a two-part, high-expansion foam

duct sealant. It keeps water, acids, dust, gases,

insects, and rodents out of the duct. FST

™

Sealant

xpands and hardens to a “closed cell”, rigid

structure. This permanent, but removable, seal

blocks both water and gas under moderate pressure.

FST

™

Sealant comes in a multi-use single plunger

caulking tube package. The foam wets and adheres

to metals, plastics, and concrete, and can seal ducts

of different sizes, base materials, and shapes. It will

conform around complex cable fill configurations. A

kit contains everything required to install the duct

block (application tool available separately).

Water Blockage:

FST

™

Sealant is an excellent water block. To test

water blocking performance, it is installed into a

conduit according to standard procedures, forming a

3-inch plug. Water is added to the system and then

pressurized to create a “water-head”.

Condition

Result

HDPE Duct, (SDR 13.5)

No Cables

Holds 7 days at 30 psi

(70 feet of water)

PVC Conduit,

No Cables

Holds 450 days at 10 psi

(22 feet of water)

PVC Conduit,

3 MDPE Cables

Holds 15 min at 40 psi

(90 feet of water)

PVC Conduit,

3 MDPE Cables bent

45°, opposite directions

for 5 minutes

Holds 15 min at 40 psi

(90 feet of water)

PVC Conduit,

3 MDPE Cables pulled

with 15 lbs axial force

for 4 hours

Holds 15 min at 40 psi

(90 feet of water)

FST

™

Sealant blocks considerable water-head

pressure, even when forces are placed on the cable

to stress the seal.

The FST

™

Sealant comes in a caulking style (one

plunger) tube. Package allows multiple seals.

Mixing is done in the nozzle as the sealant is injected.

Product Benefits:

• Meets 2011 NEC Articles 225.27,

230.8,300.5(G), and 300.7(A) on Raceway

Seals

• Creates a strong, resilient, chemically

resistant seal

• Holds 22 feet water-head pressure

continuous; 70 feet water-head intermittent

• Expands, cures and seals even when water

is present

• Controlled injection quantity – no waste

• Seal tolerates cable movement and

environmental extremes

• Compatible with common cable and wire

jackets

• Single cartridge can seal multiple ducts

• Re-enterable – seal can be removed

• Complies with TIA-758-B Standard

5.1.1.2.8, 5.4.2.3 and 7.4.2.8.1

Official Approvals:

UL Recognized

Passes UL94

Class HBF fire retardant rating

Summary of content (4 pages)

PAGE 1
FST™ Foam Sealant TECHNICAL DATA SHEET Description: FST™ Sealant is a two-part, high-expansion foam duct sealant. It keeps water, acids, dust, gases, ™ insects, and rodents out of the duct. FST Sealant expands and hardens to a “closed cell”, rigid structure. This permanent, but removable, seal blocks both water and gas under moderate pressure. FST™ Sealant comes in a multi-use single plunger caulking tube package.
PAGE 2
Component Properties: Cable Removal/Theft Deterrent Testing FST™ Sealant is a two-part, urethane foam. The liquid Part A and B are formulated to be mixed at a 1/1 ratio using the two-part coaxial caulking tube with the static mixing nozzle provided. FST™ Sealant acts as a theft deterrent by sealing cables into the conduit. To test this, a 3-inch plug of FST is used to seal 3 cables in a conduit according to standard procedures. The force to pull out each cable is measured.
PAGE 3
Application: Clean-up Field-Ready Kit The FST™ Sealant kit includes all materials required to install a finished duct block. Any unreacted material may be cleaned from surfaces with a solvent wipe such as Polywater’s Type HP™ Cleaner/Degreaser. The part A amber resin will react with water if surfaces are washed with a soap and water solution. Once reacted, the foam has strong adhesion, and may be scraped or cut from surface.
PAGE 4
Model Specification: Order Information: The statement below may be inserted into a customer specification to help maintain engineering standards and ensure work integrity. Cat # ™ The foam duct sealant shall be FST Sealant. The foam duct sealant shall be a twopart “blown” urethane foam with 98% closed cell content. The foam duct sealant shall have a compressive strength of 300 pounds (ASTM D1691), and shall have a tensile strength of 250 pounds (ASTM D1623).