Manus-Bond 77-AM

Manus-Bond 77AM Modified Polyurethane Sealant/Adhesive is based on silylated prepolymer. This "hybrid" system overcomes the limitations of typical polyurethanes without sacrificing performance. 77AM is solvent-free, non-isocyanate and is non-yellowing. 77AM offers superior primerless adhesion to a large variety of substrates and has excellent paintability. Exhibits low dirt pick-up, fast cure and is non-staining on porous surfaces. 77AM has excellent UV resistance and is highly durable in the harshest environments, including chemical resistance to jet fuels and road salts. Conforms to TTS-0230C and ASTM C920. USDA Accepted.

Technical Data

Specific Gravity
Skin Time (minutes)
Viscosity (cps)
500,000 cps
Elongation (%)
Tensile Strength
180 psi
100% Modulus
75 psi
Boeing Flow
Hardness Shore A
Service Temperature
-75°F to 350°F



10.1 fl. oz. cartridge, 10.1 and 20 fl. oz. sausage packs, 1 gallon, 2 gallon, 5 gallon and 55 gallon containers.

Surface Preparation

Apply to clean, dry surfaces free of contaminants that can adversely affect adhesion. Remove all old sealant before applying 77AM. Testing a small area for compatibility is recommended.


Cured product may be painted with most industrial & consumer paints. Testing prior to painting is recommended.

Storage Life

Twelve months in unopened containers at temperatures not exceeding 80°F.


Use with adequate ventilation. Inhalation of vapor during application and cure may cause slight eye or throat irritation. In case of contact with eyes, lips, or mouth, flush thoroughly with water. If irritation persists, consult a physician. Avoid repeated, prolonged contact with skin. See MSDS for additional information. KEEP OUT OF REACH OF CHILDREN.

Technical Service

Manus technical representatives are always available to provide assistance. Please contact our Technical Service Department with your questions or requests for specific applications. 

Limited Warranty

Any goods proven defective will be replaced or the purchase price refunded. The limited warranty described herein is in lieu of any other warranty, expressed or implied, including any implied warranty of merchantability or fitness for a particular use. The user shall determine suitability of the product for its intended use. Liability for any incidental or consequential damage or loss is excluded. The user assumes all risks of the product’s use, handling and storage.