Adcotherm HMC-1 is a specialized blend of select polymers formulated specifically for use in door and deck lid weatherstrips. This sealant is known for its homogeneity and complete moisture resistance. It exhibits strong adhesion to rubber weatherstrips and basecoat and clearcoat paint systems, showcasing excellent heat aging resistance and long-term weathering. It also offers low insertion forces within a range of temperatures and remains static within the weather strip during shipping and handling.

Product Type: Elastomeric Adhesive, Elastomeric Sealant, Hot Melt Sealant

Application Area: Deck Lid Weather Strips, Doors, Weatherstripping

Compatible Substrates & Surfaces: Coated Surfaces, Elastomers & Rubbers

Chemical Family: Synthetic Rubbers

Features: Excellent Moisture Resistance, Good Adhesion, Good Weather Stability, Heat Aging Resistant, Non Staining

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Product Highlights
  • Has good adhesion to rubber weather-strips and basecoat/clearcoat paint systems
  • It exhibits excellent heat aging resistance and long term weathering
  • Offers low insertion forces within a range of temperatures
  • Remains static within the weather-strip during shipping and handling
  • Will not stain basecoat/clearcoat paint systems
  • Is fabric dry cleanable
  • Moisture resistant

Applications & Uses

Compatible Substrates & Surfaces
Typical Applications

HMC-1 is typically used for weatherstrip seal applications.

General Application Instructions

HMC-1 can be applied by a manual or robotically controlled hot melt gun and airless pump system commonly used to apply hot melts.


Technical Data
ValueUnitsTest Method / Conditions
Specific Gravity1.3g/cm³ASTM D1875
Solids Content99.5%
Thermosel Viscosity (at 120° C)35500.0cPsASTM B3236
Sag ResistanceNo movementGM9899P
Insertion Force (6 N at 38°C)max. 2.2NGM9899P
Insertion Force (8 N at 21°C)max. 2.7N
Insertion Force (14 N at 4°C)max. 3.2N
Insertion Force (28 N at -18°C)max. 21.2N
Heat Aging (14 days at 70°C (158°F))No loss cohesive/adhesive strength
Application Temperature Range65 - 121°C

Regulatory & Compliance

Regulatory Information

Meets requirements of:

  • Chrysler - MS-CD-916 Type B
  • Ford ESB-- M4G260-A2
  • GM - 9981909

Packaging & Availability

Packaging Information

HMC-1 Sealant is available in the following standard packages:

  • 5 gallon pail
  • 55 gallon drum

Storage & Handling

Shelf Life
24 months
Storage and Shelf Life Conditions

Store material in original unopened packaging at temperatures Beteen 4°C to 38°C (40°F to 100°F). Shelf life is 24 months when stored as recommended.