LOCTITE TP 650 is a specially formulated liquid primer created to enhance the adhesion of coatings and adhesives onto various rubber materials, including sponge, molded, or dense EPDM rubber, as well as TPE, TPV, and TPO. This primer is user-friendly and ready for immediate use. It is recommended to apply relatively low dry film weights of this product to promote effective adhesion of topcoats or adhesives onto challenging-to-bond substrates. This product can be applied as is, and it offers enhanced glass chisel abrasion resistance when used with glass run coatings.

Supplied By: Henkel Corporation

Product Code: H01878

Regional Availability: Canada

Product Type: Primer

Features: Good Abrasion Resistance, Good Adhesion, High Durability, Low Friction

Application Method: Spray, Swab

    Enhanced TDS

    Identification & Functionality

    Features & Benefits

    Ready-to-Use Product Features
    Product Highlights


    • Provides strong adhesive strength between substrate and coating.
    • Usable for multiple substrates.
    • Can provide low friction coatings with enhanced abrasion resistance performance for weather- strip seals.
    • Very low solids content.


    • Robustness in durability and performance of applied coating.
    • Economic savings by use of one primer for rubber or plastics.
    • Enhances robustness of produced part that results in improved quality and customer satisfaction.
    • Cost-savings through reduced inventory and dilution extension for non-critical applications

    Applications & Uses

    Application Area
    Application Method
    Compatible Substrates & Surfaces
    Cure Method
    Recommended Applications
    • Priming of EPDM rubber and thermoplastic substrates prior to application of a top coat.
    • Theoretical Coverage : app. 17 m2/kg at 1 μm
    Method of Use

    Surface Preparation

    Surfaces to be coated must be clean, dry and free from dust and grease. Usually an alcohol wipe is sufficient.

    Mixing and Dilution

    The product is supplied ready-for-use. Stirring or shaking the material is recommended prior to use to improve uniformity.


    The product can be applied by swab or spray application. It is preferable that only a thin even layer of coating be applied (app. 1 micron (0.04 mil) dry). For spray application in small volume production and prototype, a suction cup gun may be used. In full production a standard spray system designed to apply solvent- based coatings can be used. LOCTITE TP 650 should be applied as is for applications onto thermoplastic substrates and applications where maximum abrasion resistance is required.


    Air dry the coated parts for 5 - 10 minutes at room temperature or for 60 - 80°C 1-2 minutes (depending on humidity) before applying final coating. Drying time for production operations can be decreased by passing coated parts through infrared heat, or through batch or conveyor ovens. When applying to hot substrates, ensure that primer does not boil or blister.

    Packaging & Availability

    Packaging Type
    Regional Availability
    • Canada

    Storage & Handling

    Shelf Life
    2 years
    Storage Conditions

    2 years from date of qualification under original seal.