Sonolastic® ULTRA High Strength Aliphatic Polyurethane Adhesive/Sealant A bonding sealant for seams, joints and junctions where adhesive strength is of primary importance.

Physical Properties   Hardness: 50 (Shore A) Tack Free Time: Less than 72 hours: Stain & Color Change: None Ultimate Tensile Strength: 600 psi (42 kg-force/sq. cm) Elongation: >600% Application Temperature: 40°F to 200°F (4°C to 93°C)

Description
Sonolastic® ULTRA is a one-part moisture curing, caulk-gun applied aliphatic polyurethane adhesive/sealant with very high UV resistance. Sonolastic® ULTRA does not require a primer on most materials, but it bonds very well to wood, cured epoxy-coated surfaces, fiberglass laminates, metal, aluminum, plastics (except ABS and Lexan), composites and concrete.

Basic Uses
Sonolastic® ULTRA is specially designed for use in the repair and fabrication of homes, boats, RV's, trucks, van conversions and specialty vehicles. Once cured, Sonolastic® ULTRA becomes a high strength adhesive that can be used to replace rivets, welds and other fasteners. Sonolastic® ULTRA is suitable for continual immersion in water. Sonolastic® ULTRA is designed for interior and exterior use.

Limitations
Do not apply over damp or contaminated surfaces. Substances that will contaminate a surface include glycols or products suspended in glycol, waxes or products with a wax base, substances that contain or contained silicones. Surfaces should be dry and clean to the base substrate. Penetrating epoxy coatings on the substrate should be fully cured before Sonolastic® ULTRA is applied. Use with adequate ventilation.

Packaging
Immediately available in 10.1 oz. (300 ml) caulking gun cartridges and by special order in 20 oz. (592 ml) sausages.

Colors Sonolastic ULTRA is available in white or gray.
Note: color is marked on top edge of tube or on tube plunger.	White	Gray

Application Recommendations
May be used in any vertical or horizontal joint, seam, crack, or panel. Fill joint completely and tool. At 75°F (23.9°C) 50% R.H. a durable skin forms within 24 hours. Curing continues at the rate of 1/16 inch (1.6mm) per day. The cure rate may be slightly reduced at lower temperatures and less humidity. Sonolastic® ULTRA can be painted after it has cured.

Surface Preparation
For best adhesion, the joint interface must be sound, clean and dry. The joint surface may require a through wire brushing, grinding, sandblasting, or solvent washing. A primer such as CPES™ (Clear Penetrating Epoxy Sealer) can be used if desired. Primed surfaces should be cured before Sonolastic® ULTRA is applied.

Tooling & Cleaning
Tooling is recommended immediately after application to insure firm, intimate contact with the joint or seam interface. Dry tooling is preferred, although tooling agents (such as soapy water) can be used. Excess sealant and smears adjacent to the joint can be removed with xylene or toluene before sealant cures. After sealant cures excess compound can be cut away with a blade.

For additional information, refer to the Sonolastic® ULTRA Material Safety Data Sheet.