LORD® AP-134 adhesion enhancer/surface modifier is a one-coat, moisture-cure primer used to promote adhesion to a variety of polar substrates. These substrates include architectural and automotive glass, steel, aluminum, brass, e-coated metal, glass fabric, ceramic tile, vitrified clay pipe, concrete and some plastics.
Unit of Measure

Typical Properties


N/A Clear Straw Yellow Liquid

Viscosity at 77 Degree Fahrenheit (ºF) (25 Degree Celsius (ºC)) Temperature

N/A 0.0 to 0.8 cSt


N/A 7.2 to 7.5 lb/gal860.0 to 900.0 kg/m³

Solids Content by Weight

N/A 4.8 to 6.2 %

Flash Point (Seta) Temperature

N/A 35 ºF1.6 ºC


N/A Ethanol n-Butanol Toluene

Note for Typical Properties

N/A Data is typical and not to be used for specification purposes.

Shelf Life/Storage

Shelf Life/Storage

N/A Shelf life is one year from date of shipment when stored in a dry, well ventilated area at 70-80 ºF (21-27 ºC) in original, unopened container.

After opening, protect adhesion enhancer/surface modifier from moisture contamination. If using a 55-gal


Shelf Life

N/A 1 y



N/A Provides a wide range of product applications by functioning as a primer to a variety of polar substrates and as an adhesive for reaction injection molding (RIM) of polyurethane to glass.

Easy to Apply

N/A Applies easily by spray, dip or polyester felt applicator.


N/A Requires only a single coat for most applications, reducing labor, solvent usage, inventory and shipping costs.


Surface Preparation

N/A To ensure optimum adhesion to glass, clean the bond surface with a vinegar-modified glass cleaner. For other applications, wipe surface with a suitable solvent.


N/A No mixing is required before or during use. Dilution is not required.


N/A Apply LORD® AP-134 adhesion enhancer/surface modifier by spray, dip or polyester felt applicator. For optimum adhesion, the dry film thickness should be 0.06-0.10 mil (1.52-2.54 micron).


N/A Allow adhesion enhancer/surface modifier to hydrolyze in moist air (50-80% RH) at 70-90 ºF (21-32 ºC) for 1-2 hours. To reduce the hydrolysis time, parts can be cured in an oven at 190 ºF (88 ºC) for 3 minutes. Air being drawn into the oven should be 50-80% RH. The cure time can vary depending on the mass of the part being primed. Large parts require more time in an oven to complete cure, due to the heat sink effect of the larger mass.

For best adhesion, apply top coat or encapsulating polymer within 24 hours after adhesion enhancer/surface modifier cures.


N/A Use toluene or alcohol to remove wet adhesion enhancer/surface modifier. Remove cured adhesion enhancer/surface modifier by mechanical abrasion, blasting or grinding methods.

Additional Information

Additional Information

N/A Values stated in this technical data sheet represent typical values as not all tests are run on each lot of material produced.

Information provided herein is based upon tests believed to be reliable. In as much as LORD® Corporation has no control over the manner in which others may use this information, it does not guarantee the results to be obtained. In addition, LORD® Corporation does not guarantee the performance of the product or the results obtained from the use of the product or this information where the product has been repackaged by any third party, including but not limited to any product end-user. Nor does the company make any express or implied warranty of merchantability or fitness for a particular purpose concerning the effects or results of such use.

LORD® and "Ask Us How™" are trademarks of LORD® Corporation or one of its subsidiaries.

LORD® provides valuable expertise in adhesives and coatings, vibration and motion control, and magnetically responsive technologies. Our people work in collaboration with our customers to help them increase the value of their products. Innovative and responsive in an ever-changing marketplace, we are focused on providing solutions for our customers worldwide. Ask Us How™.