Adcobond 4189-3 sound damping pad is a combination of energy-absorbing mastic material and an aluminum top layer that provides maximum sound damping. The mastic damping material converts vibratory energy into heat through extension and compression, effectively reducing noise levels on the treated substrate. The aluminum top layer maximizes this effect by redirecting any escaping vibratory energy back into the mastic layer.

Product Type: Tape

Application Area: Automotive Applications

Compatible Substrates & Surfaces: Painted Surfaces

Features: Low Temperature Flexibility, Sound Damping

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Product Highlights
  • Adheres to polar and non-polar surfaces.
  • Good Low Temperature Flexibility
  • Can be used on most clean dry substrates
  • Broad application temperature range
  • Reduces noise created by vibration

Applications & Uses

Markets
Applications
Application Area
Compatible Substrates & Surfaces
Typical Applications

4189-3 is used to dampen vibrations that create sound in a variety of automotive OEM applications. It is very aggressive and can be used on a variety of substrates such as:

  • E-Coat
  • Oily Metal
  • Powder Coat
  • Phosphate Coated Metal

Properties

Color (Properties)
Appearance
Black Foil - Backed Patch
Technical Data
ValueUnitsTest Method / Conditions
Specific Gravity1.6-ASTM D71
Cone Penetration (150g added Load)90.0dmmASTM D217
Adhesion Initial (Galvanized)Cohesive Failure-MS-CD-629
Adhesion Initial (Galvanneal)Cohesive Failure-MS-CD-629
Adhesion Initial (E-Coat)Cohesive Failure-MS-CD-629
Adhesion Aged (20 min at 163°C Galvanized)Cohesive Failure-MS-CD-629
Adhesion Aged (20 min at 163°C, Galvanneal)Cohesive Failure-MS-CD-629
Adhesion Aged (30 min at 121°C, Galvanized)Cohesive Failure-MS-CD-629
Adhesion Aged (30 min at 121°C, Galvanneal)Cohesive Failure-MS-CD-629
Adhesion Aged (Condensing Humidity Salt Spray Heat)No loss of adhesion-MS-CD-629
Note

*Heat Aging 250hrs @ 79°C Environmental Cycle

Packaging & Availability

Regional Availability
  • North America
Packaging Information

Available as patches or die cut sheets.

Storage & Handling

Shelf Life
24 months
Storage and Shelf Life Conditions

Store material in original unopened packaging at temperatures between 10°C to 50°C (50°F to 120°F). Shelf life is 24 months when stored as recommended.