GSSI® MB-10A Sealant Tape

1 of 4 products in this brand
GSSI® MB-10A Sealant Tape is a hot-melt butyl tape. It offers superior cohesive and adhesive strength and withstands extreme roof temperatures. It also has excellent low-temperature compressibility and is resistant to cold flow and UV light. The sealant remains unaffected by building movement. It has a wide service temperature range and is available in various sizes and lengths. MB-10A is designed for metal buildings and meets sealing requirements for window glazing, air conditioning, and refrigeration. It is extruded on silicone-coated paper for easy application. The tape comes in different sizes and lengths, securely packaged in cartons for storage and export in metal roofing applications.

Chemical Family: Butyl Rubber

Product Type: Elastomeric Sealant, Hot Melt Adhesive, Tape

Application Area: Air Conditioners, HVAC Ducts, Metal Building, Refrigerators, Roofing Substrates, Roofs, Windows

Compatible Substrates & Surfaces: Metal, Silicone

Features: Cold Resistance, Excellent Adherence, Excellent Flow Properties, Excellent Retention, Excellent Substrate Adhesion, Excellent Surface Tack, Fast Sealing, Good Bonding Strength, Good Compressive Strength, High Cohesive Strength, High Compressibility, High Temperature Resistance, UV Resistant, Water Resistant, Wide Temperature Operating Range

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Identification & Functionality

Backing Material Type
Chemical Family

Features & Benefits

Equipment Features
Product Advatages

MB-10A offers many qualities that result in a superior seal, greater longevity, and easier application. 

  • Greater cohesive strength
  • Superior adhesive strength
  • Withstands extreme roof temperatures
  • Superior low temperature compressibility
  • Cold flow resistant
  • Resistant to UV light
  • Seal not affected by normal movement of building
  • Wide service temperature range
  • Extensive inventory of standard sizes
  • Available in custom sizes and lengths

Applications & Uses

Compatible Substrates & Surfaces
Product Installllation

Surface Preparation: All surfaces to be sealed should be free of dust, dirt, oil and moisture before applying sealant.
Working Conditions: For best results, apply in dry conditions above 40oF (4oC).
Application: Apply MB-10A to surface directly from roll. Press sealant through the silicone release paper with a smooth, even hand motion. Note: for metal roofing and siding applications, place sealant under the fastener to prevent wind-blown rain from leaking through the fastener holes.

Product Installation Diagram:

GSSI® MB-10A Sealant Tape - Product Installllation


Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Specific Gravity (US)15lb./galASTM D 792
Low Temperature FlexibilityNo loss of adhesion or cracking-ASTM C 765
Weight Loss after Heat Aging (No blisters)0.13-ASTM C 771
Oil Migration/Plasticizer Bleed-Out (1st paper)0.21" -ASTM C 772
Softness Penetration6.07 - 6.87mmASTM C 782
Tensile Adhesive Strength (MOF, Cohesive)15.25 - 17.65lb. forceASTM C 907
Yield Strength (lb. force)10.205 - 11.205psiASTM C 908

Packaging & Availability

Packaging Type
Regional Availability
  • Africa
  • Europe (Excluding Russia)
  • India
  • Middle East