DOWSIL HM-2600

Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.

DOWSIL HM-2600

Main features

  • 115 to 135 deg C Application Range
  • 15-Minute Open Time
  • Greater Than 1200% Cured Elongation

Product Description

DOWSIL HM-2600 Silicone Assembly Sealant is a one-part, moisture-reactive silicone hot-melt sealant for assembly sealing and bonding. It is applied at 115 to 135 deg C and provides immediate handling strength from the hot-melt phase before subsequent neutral moisture cure. Typical processing data include a 15-minute open time and pot life up to 24 hours. The cured material has Shore A 55 to 65 hardness, 4.1 MPa tensile strength, and greater than 1200% elongation, with an approximate service-temperature range of -50 to 150 deg C.

Key features

  • Immediate Handling Strength: The hot-melt phase provides handling strength before neutral moisture cure.
  • 115 to 135 deg C Application Temperature: The hot-melt process also has a 15-minute open time and pot life up to 24 hours.
  • Greater Than 1200% Cured Elongation: Typical cured tensile strength is 4.1 MPa.

Applications

Assembly sealing and bonding requiring immediate handling strength from hot-melt application followed by silicone moisture cure.

Product Family

DOWSIL HM-2600

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TDS, SDS & Technical Documents

Technical Specifications

Physical Properties
Open time
15 minutes
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
> 60,000 mPa.s
Mechanical Properties
Elongation
Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
> 1200 %
General Properties
Appearance
Appearance at room temperature.
Clear
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.08
Thermal Properties
Service temperature
-50 to 150 °C

Additional Information

Technical properties

As-supplied / before-processing properties

PropertyValueUnitMethod / condition
Application temperature115 to 135deg CApplication range
Pot lifeUp to 24hTypical
Open time15minTypical
Specific gravity1.08-Uncured; typical
Nonvolatile content>=98.5%Typical
Technical properties

After-processing / final-state properties

PropertyValueUnitMethod / condition
Durometer55 to 65Shore ACured; typical
Tensile strength4.1MPaCured; typical
Elongation>1200%Cured; typical
Service temperature rangeApprox. -50 to 150deg CTypical

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