Cut Sheet

Joint Preparation
Joint surfaces should be clean, dry and free from all
contamination including: dirt, oils, grease, tar, wax,
rust and any other substance that may inhibit the
sealant’s performance.
Joint Design
Install all joint applications per ASTM and SWRI
recommendations and guidelines. Joints shall be
designed with a depth to width ratio of 1:2 (joint depth
one-half the width). Control the depth of the sealant
by using a polyethylene backer rod that is 25% larger
than the joint opening at standard temperature. To
prevent three-point adhesion use a backer rod or
bond breaker tape to ensure proper joint movement
and a long lasting weatherproof seal. Where the joint
conguration will not permit a backer rod, CHEM
LINK recommends that an alter
nave bond breaker
be used.
Joint Width
Inches (mm)
Joint Depth
Inches (mm)
1/4 - 1/2 (6-13) 1/4 (6)
1/2 - 3/4 (13-19) 1/4 - 3/8 (6-10)
3/4 - 1 (19-25) 3/8 - 1/2 (10-13)
Compatible Substrates*
EPDM and SBS Mod Bit
Aluminum and Galvanized Metal
Stainless Steel
Engineered Plastics, PVC
Glass
Fiberglass FRP
Wood
Block and Brick
EPS Foam
Concrete and Stone
*Test and evaluate to ensure adequate adhesion.
Typical Physical Properties
Gun Grade Zero Slump
Viscosity
1,200,000 cp
+/- 400,000 cp
Brookeld RVF TF
Spindle, 4 RPM,
73°F (23°C)
Density
11.8 +/- 0.2 lbs
per gallon
ASTM D1475
Tack Free
Time
20 min +/- 10 min 45 +/- 5 % R.H.
Elongation at
Break
290% ASTM D412
Hardness
Shore A
45 ASTM C661
Tensile
Strength
330 psi ASTM D412
Shear
Strength
380 psi ASTM D1002
Low temp.
ex
Pass -10°F (-23°C)
1/4 inch mandrel
ASTM D816
Shrinkage No visible shrinkage after 14 days
Service
Temperature
-40°F to 200°F (-40°C to 93°C)
Basic Uses
Expansion joints
Pre-cast concrete
Block and Masonry
Window and door frames
Siding
Parapets
Cove Joints
Transportation
Weather Sealing
Page 2
CHEM LINK recommends an appropriate substrate
primer to be used on high moving joints or dissimilar
substrates which require increased adhesion
properties.