Fabricators of Adhesive Tapes & Flexible Materials

MBK 4550 is a closed cell Vinyl Nitrile Foam that is virtually indestructable. It is resistant to fire, chemicals and absorps weather, oils and other fluids. It has good shock absorption and vibration dampening, and provides good load bearing qualities while maintaining a permanent positive seal. Typical applications include thermal pipe wrap insulation, HVAC systems and weatherproofing.

Vinyl Nitrile Foam is available in black or gray sheets with or without adhesive and in various densities and thicknesses, ranging from 1/8" to 1". Custom adhesive backing, sizes, shapes and configurations available upon request.

Unit of Measure



Brand Part Number

N/A MBK 4550

Primary Application

N/A Damping Gaskets Industrial Sealing

Application Description

  • Used for gasketing, sealing and vibration damping
  • Sealing HVAC systems and roof curbs
  • Weatherproofing
  • Thermal pipe wrap insulation
  • Soundproofing
  • Automobiles, truck and motor homes


  • Low compression set
  • High resilience
  • Low outgassing
  • Good weatherability
  • Excellent seal for gasoline, alcohol, alkaline, acids, water
  • Resists oxidation
  • Very good electrical resistivity

Markets Served

N/A Aerospace Construction Defense Electrical Electronics Manufacturing


N/A PVC / NBR Vinyl Nitrile Foam

Adhesive Coating

N/A No Adhesive

Adhesive Type

N/A Plain


N/A Black Gray


N/A 3 to 5 lb/ft³

Service/Operating Temperature

N/A -40 to 200 ºF

N/A The physical properties listed are typical values based on PSTC, ASTM and other standard tests. This data should be used as guides only, and not as specification limits. Our recommendations for use are based on practical experience and testing. However, it is the responsibility of the user to determine the suitability of the product for his intended use. MBK Tape Solutions will not assume liability for claims beyond the replacement value of our product proved to be defective.

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