Royal Adhesives & Sealants, LLC an H.B. Fuller Company • 2001 W. Washington Street, South Bend, IN 46628 • Phone: 800-999-GLUE • Fax: 574-246-5425

This product is warranted to the original purchaser to meet published specifications, it any, and, in the absence of published specifications, to be merchantable quality. Such warranty may not be assigned or otherwise

transferred by purchaser. No other warranty, expressed or implied, of fitness for a particular purpose or any other thing is made. Purchaser's exclusive remedy for breach of this warranty shall be a refund of the price paid for

the products by the purchaser. Except as stated above, Royal Adhesives & Sealants, LLC, shall not be liable for any defect in, or breach of obligation relating to the defects in these products, regardless of the theory that may

be asserted, including, without limitation, negligence, contract, absolute liability in tort or misrepresentation. If the purchaser does not accept goods on these terms, they are to be returned at once, unopened.

ISO 9001:2008 10/22/15 TECHNICAL SALES BULLETIN

Silaprene®

HAPs FREE Sealant DC12781

Silaprene HAPs FREE Sealant DC12781 is an exceptional

one-part product that combines ease of application,

versatility of use, high ultimate strength, permanent bonds

and long service life. DC12781 is a high quality, HAPs

FREE elastomeric sealant that provides superior adhesion to

a variety of surfaces.

DESIGNED TO BOND

1. All kinds of metal, including galvanized

2. Wood, particleboard and plywood.

3. Rubber, concrete, masonry and glass

4. Thermoplastics, such as ABS, and polyolefins

5.Thermoset plastics like phenolic, polyurethane,

polyesters and epoxies.

6. Fiberglass and other fiber reinforced plastics

PHYSICAL CHARACTERISTICS

1. HAPs Free

2. Fast drying with quick tack free times

3. Permanently resilient - resists vibration and stress caused

by temperature cycling

4. Outstanding resistance to water, most industrial

chemicals, acids and bases

5. Resists cracking, chipping and peeling

6. Requires no priming

7. Smooth, creamy texture

8. Easy to gun - colored versions can be finger tooled.

9. Paintable

10. Exceptional UV resistance and weather ability

11. Forms a tight, long-lasting seal to most surfaces

12. Shelf life: 12 months when stored below 80° F

PREPARATION OF SUBSTRATES

Surfaces to be bonded should be cleaned of all dust, oils or

other contaminates. A solvent wipe is often adequate.

Bonds to rigid surfaces are usually improved by a solvent

wipe followed with light abrasion (180 grit), and another

solvent wiping to remove abrasive residue. Dry surfaces

thoroughly before applying adhesive.

TYPICAL PROPERTIES

Color

Clear

Base

Block Copolymer

Solvents

Mineral Spirits/

Aromatic 100

Solids

55%

Viscosity

Paste extrusion grade

Weight/gallon

7.4 pounds

Specific Gravity

0.89

Temp. Range

-40°F to 200°F

METHOD OF APPLICATION

HAPs FREE Sealant DC12781 can be applied by ordinary

caulking guns or pressure pumping equipment. Pumping

equipment should be of the follower-plate type and have a

pump ratio of at least 40:1. Cox, Aro, Binks, DeVilbiss,

Graco and Lincoln all produce suitable equipment for

handling this material.

Silaprene HAPs FREE Sealant DC12781 is formulated for

room temperature curing, and curing is initiated when a

majority of the solvent has been evacuated from the bond line.

Strength build-up is very fast in the early stages to give high

holding power, with continued strength build-up over time.

CLEANER AND THINNER

Uncured material can be cleaned up with VMP Naphtha,

Heptane, and Mineral Spirits. Thinning is not recommended.

If a thinner product is deemed necessary for your application,

contact your Royal Adhesives & Sealants salesman.

PRECAUTIONARY DATA

This product is flammable. Vapors may form an explosive

mixture with air. Precautions should be taken to keep product

away from fire, sparks, motors and other sources of heat or

flame. Turn off or deactivate any electrical equipment or

sources of ignition. Adequate ventilation is required to keep

vapor concentrations below the Threshold Limit Value.