Product Details:
One-Part Smooth Finish Formula with Primerless Adhesion on Most
Common Construction Surfaces
+100% to -50% Joint Movement Capability
Cost Saving Sausage Packs
CRL M64
Polyurethane is a high performance, low modulus,
one-component, moisture curing modified polyurethane sealant. It
has a smooth, even consistency and surface when cured. M64 requires
no priming for common substrates such as brick, concrete, aluminum,
wood and granite. It applies with any standard cartridge caulking
gun to clean, dry surfaces. M64 was specifically developed for
sealing dynamically moving joints, such as: expansion and control
joints, precast concrete panel joints, curtainwall joints,
perimeter caulking (masonry, windows, doors, panels), bedding of
mullions, panels and frames. It is compatible with I.G. sealants
when glazing units and applied as a toe or heel bead. M64 exhibits
tenacious adhesion which will not dissipate with time. This unique
weather-resistant formulation possesses a balanced adhesive
strength, low modulus and high recovery, making it ideal to
withstand the following adverse conditions common to such
installations: moisture, movement, shear and deflection. M64 is
suitable for continual immersion in water with the use of the
appropriate primer. Paintable after full cure, minimum 72
hours.
In order to help you better select the correct sealant, we have put
together a Silicone and Sealant Selector
Chart.
Color:
Gray
Contents of Sausage: 20.3 fl oz (600 ml)

Technical Data: Conforms
to U.S. Federal Specification TT-S-00230C, Type II, Class A; ASTM
C920-98, Type S, Grade NS, Class 25, Use NT, M, T, A, and O.
CAN/CGSB 19, 13-M87, Type MCG-225-A-N with QPL #81050. USDA
Approved
Comparable Sealants:
CRL M66 Polyurethane;
Tremco Vulkem 921, Tremco Vulkem 116, Tremco Vulkem 911, Tremco
Vulkem 931, Tremco DyMonic;
Sika 1A, Sika 15LM;
Sonneborn NP1, Sonneborn Sonolastic 150;
Pecora Dynatrol 1;
OSI PR-255;
Schnee Moorehead 7100;
Somaca One-Part Polyurethane;
Bostik Chem-Calk 900.
Important Note:
Do not apply over damp or contaminated surfaces. Use with adequate
ventilation. Not recommended for surfaces with special protective
or cosmetic coatings without prior consultation of the
manufacturer. Check sausage label and Specification Data Sheet for
additional limitations.