Spectrem 2

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Spectrem 2 is a high-performance silicone sealant for SG projects. The silicone can withstand high loads and weathering, while ensuring an insulated and weather-proof building.

General properties

  • Excellent adhesion to most construction materials.
  • No need for priming.
  • Dries quickly.
  • Expected lifetime: over 30 years.
  • Excellent resistance to UV radiation, moisture, large temperature fluctuations, wind loads, acid rain, and other weather effects.
  • Wide service temperature range: -54 °C to +177 °C.
  • Meets the requirements of the following standards:
    – ASTM C920 Type S, Grade NS, Class 25; 
    – TT-S-001543A (COM-NBS) Class A; 
    – TT-S-00230C (COM-NBS) Class A; 
    – CAN/CGSB-19.13-M87.

Intended for:
Spectrem 2 is intended for use in 2- and 4-sided structural glazing systems for fixing/bonding glass elements to structures, as well as sealing joints between elements. 

In SG projects, Spectrem is not recommended for use:

  • in contact with untreated metal surfaces;
  • in low-humidity environments – significantly slows down the curing process.

Colour

  • Black
  • Other colours on request

Packaging

  • 300 ml cartridge (30 per carton)
  • 600 ml sausage (15 per carton)

Properties (typical values)

  • Pot life (surface film formation time): 8–20 min (dependent on temperature and humidity)
  • Skinning time (ASTM C679): 35–45 min
  • Full cure time (+23 °C, 50% RH): 7–14 days (6 mm joint)
  • Hardness (Shore A, ASTM C661): 37–40
  • Tensile strength (ASTM D412): 1.52–1.59 MPa (220–230 psi)
  • Elongation at break (ASTM D412): 235–260%
  • Secant modulus at 100% elongation (ASTM C1135): 0.62–0.69 MPa (90–100 psi)
  • Tear strength (ASTM D624): 6.2–7.0 kN/m (35–40 pli)
  • Adhesion (peel, ASTM C794): 2.8–3.9 kN/m (16–22 pli) (aluminium, glass)
  • Service temperature range: -54 °C to +177 °C