GSSI® MH-19 Rubber Sealant Tape
1 of 1 products in this brandChemical Family: Butyl Rubber
RTU Product Type: Elastomeric Sealant, Paper Tape, Tape
Application Area: Gutters, HVAC Ducts, Mobile Homes, Recreational Vehicles, Roofs, Vents
Compatible Substrates & Surfaces: Metal, Silicone
Features: Color Retention, Cost Effective, Easy To Apply, Easy To Finish, Excellent Adherence, Good Adhesion
Enhanced TDS
Identification
- Backing Material
- Chemical Family
- GBU
- RTU Product Type
Applications
- Application Area
- Compatible Substrates & Surfaces
Applications & Uses
- Product Insatallation
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Surface Preparation: All surfaces to be sealed should be free of dust, dirt, oil, moisture, grease, etc. before applying tape.
Working Conditions: Apply in normal dry working conditions.
Application: Apply directly from roll or cut to size with knife or scissors. Press MH-19 firmly into place with hand. Intimate contact must be made between tape and subsurface to assure a watertight seal. Gently peel off siliconerelease paper. When lapping tape, allow at least 1/4” (6.4 mm) overlap.
Meets AAMA 807.1-85 Requirements
Product Insatallation Diagram

Features
- Ready-to-Use Product Features
Features & Benefits
- Product Advantages
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MH-19 makes construction jobs move smoothly and quickly.
- Superior adhesion
- Stronger than putty tapes
- Easily trimmed with blunt tool
- Awled quickly and cleanly
- Provides watertight seal
- Easy application
- Excellent adhesion to sidewalls
- No discoloration
Packaging & Availability
- Packaging Type
- Regional Availability
Physical Properties
- Color (Properties)
- Physical Form
Properties
- Typical Properties
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Value Units Test Method / Conditions Density 15.3 - 15.5 Ibs/gal ASTM D792 Softness Penetration (softness) 9.5 - 9.9 mm ASTM C782 Tensile Adhesive Strength (MOF, cohesive) 31.6 - 36.4 lb. force ASTM C907 Weight Loss after Heat Aging (after heat aging) 0.388 - 0.392 % ASTM C771 Yield Strength (lb. force) 7.8 - 8.2 psi ASTM C908