H.B. Fuller 7039-1

H.B. Fuller 7039-1 heat-expandable sealant is a die-cut rubber-based sealer that expands with the application of heat to form a flexible closed-cell foam. This product is recommended for filling openings between metal parts where sound and vibration damping are required. It is also recommended for metal-to-metal bonding where medium strength can be tolerated.

Product Type: Foam Sealer, Heat Expandable Sealant, Sealer, Tape

Compatible Substrates & Surfaces: Metal

Features: Die Cuttable, Easy To Apply, Good Gap Filling Capabilities, Medium Strength, Non-tacky surface, Sound Damping, Vibration Damping

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Backing Material Type

Features & Benefits

Features and Benefits
Features Benefits
Die Cutable Fits many unusual sizes and shapes
Expandable >200% Fills gaps and voids to form a seal and dampen sound and vibration
Tack Free at Room Temperature Easy to handle, no transfer to
tools or operator


Applications & Uses

Compatible Substrates & Surfaces
Basic Use

7039-1 is used to fill gaps and as a sound and vibration damper in a variety of automotive OEM ap-plications.


Slight bland
Typical Properties
ValueUnitsTest Method / Conditions
Specific Gravity0.9 - 1.15--
Solid Content99.0%TM45-2
ToxicityNot toxic or noxious--
Expansion (at 157°C, per 25 minutes)100 - 200%-

Meets requirements of:
Chrysler : MS-CD-466 Type C
GM : 9984193 Type A & B
         9984188 Type B

Typical Properties
Property Typical Value Test Method
Exterior Cycle
Heat Aging
Cold impact
No adhesion loss or
cracking under all
listed conditions
Carpet Stain No stain TM45-44
Smoke No smoke up to 171°C (340°F)  
Elevated Temperature Stability No detrimental effects TM45-21
Low Temperature Stability Pass three cycles TM45-21
Storage Stability at 35°C (95°F) / 90 days Performs within specifications TM45-21


NOTE: The foregoing information is published as general information only. The listed properties and performance characteristics are approximate values and are not to be interpreted as manufacturing specifications.


Packaging & Availability

Regional Availability
  • North America

Storage & Handling

Storage Conditions

Store material in original unopended packaging in a cool dry area. Shelf life is 24 months when stored as recommended.