H.B. Fuller HMC-7RC

H.B. Fuller HMC-7RC is a hot-applied butyl rubber-based adhesive and sealant that bonds to various substrates and creates a permanent seal against moisture, dust, and air intrusion. It is extremely resistant to both interior and exterior environmental conditions and has excellent adhesion to glass, EPDM, and PVC.

Product Type: Hot Melt Sealant

Application Area: Windows, Windshields

Compatible Substrates & Surfaces: Ethylene Propylene Diene Monomer (EPDM), Film, Glass, Metal, Painted Surfaces, Polyethylene (PE), Polyvinyl Chloride (PVC)

Chemical Family: Butyl Rubber

Features: Dust Resistance, Excellent Substrate Adhesion, Good Moisture Resistance, Good Sagging Resistance, Low Temperature Flexibility, Outdoor Durability

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Typical Applications

HMC-7RC is typically used for sealing fixed window modules, door water-deflectors, windshield reveal moldings, and as a hot applied gasket. It can also be used as a temporary adhesive and assembly aid to bond lightweight materials prior to final assembly

General Instructions

HMC-7RC can be processed with standard hot melt pumping equipment at a temperature of 121°C to 150°C (250°F to 300°F).

Clean Up: Let material cool to room temperature and remove by pulling rapidly from the substrate. Residual traces can be removed with an aliphatic solvent (mineral spirits) or a 50/50 alcohol/water solution.


Typical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.2-ASTM D71
Solid Content100.0%-
Sag Resistance (at 121°C)No movement--
Ash Content24.0%FLTM-150-10
Force to Compress (5 mm diameter bead)1.1N/mmASTM C97250
Yield Strength150.0kPaMS-CD641
Cone Penetration95.0dmmASTM D217
Cold Slam (at -29°C)Pass 10 slams-GM9773P
Peel Strength2000.0N/m-
Service Temperature- 40 - 121°C-

Packaging & Availability

Packaging Type
Regional Availability
  • North America
Typical Packaging

HMC-7RC Sealant is available in the following standard packages:

  • 5 gallon pail
  • 55 gallon drum

Storage & Handling

Shelf Life
24 Months
Storage Conditions

Store material in original unopened packaging at temperatures between 4°C to 43°C.