M-1 Data 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
alternative 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
35 min +/- 10 min 45 +/- 5 % R.H.
Elongation at
Break
525% ASTM D412
Hardness
Shore A
45 ASTM C661
Tensile
Strength
370 psi ASTM D412
Shear
Strength
390 psi ASTM D1002
Tear
Strength
111 pli ASTM D624
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.
Typical Peel Values ASTM C794
Vinyl 55 pli cohesive failure
Glass 55 pli cohesive failure
Aluminum 55 pli cohesive failure
Cut Concrete (unprimed) 36 pli cohesive failure