Product Details:

One-Part Grainy Textured Finish Formula with Primerless Adhesion on Most Common Construction Surfaces
Durable and Flexible Performance in Moving Joints
Cost Saving Sausage Packs

CRL M66 Polyurethane is a one-part, moisture curing, gun grade polyurethane sealant. It does not require a primer on most common construction surfaces. CRL M66 is durable, flexible, and offers excellent performance in moving joints. CRL M66 is an excellent general purpose sealant designed for use in precast, masonry, window frame perimeters, and similar types of construction joints. M66 is compatible with I.G. sealants when glazing units and applied as a toe or heel bead. It is suitable for continual immersion in water with the appropriate primer. CRL M66 is designed for exterior and interior use. It is also suitable for varied manufacturing uses, such as the production of travel trailers and mobile homes, and in the assembly of galvanized air conditioning duct work. 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:                         Bronze
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 M64 Polyurethane Sealant
Tremco® Vulkem 116, Tremco® Vulkem 911, Tremco® Vulkem 921, Tremco® Vulkem 931, Tremco® DyMonic Sealants
Sika® 1A, Sika® 15LM Sealants
Sonneborn® NP1, Sonneborn® Sonolastic 150 Sealants
Pecora® Dynatrol 1 Sealant
OSI® PR-255 Sealant
Schnee Moorehead 7100 Sealant
Somaca® One-Part Polyurethane Sealant
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.