Tremco JS680 Butyl Sealant
Double Glazing Components

Tremco JS680

JS680 is a one-component polyisobutylene-based sealant, specially developed for the manufacture of insulated glass units. JS680 functions as the inner barrier or primary seal in dual-seal systems and should be used in conjunction with a secondary sealant of either polysulphide, polyurethane, hot melt butyl or silicone. JS680 is not suitable for the construction of IG units with flexible spacers.

Packaging: 1 kg, 2.4 kg and 7 kg cylinders
Colour: Black

JS680 is specially formulated to provide an inner barrier to moisture and gas in the design of insulating glass units. The compatibility of JS680 is warranted with Tremco secondary sealants such as JS334, JS562 or JS442 MF but should be tested for other sealants. JS680 can be applied with an extrusion machine such as the GMS 700N at a temperature of +110°C to +130°C depending on the desired pressure and extrusion speed.

Please see data sheet for more information. Please do not hesitate to contact us for further information, pricing or to discuss your double glazing requirements.

  • Very good adhesion to glass, aluminium, galvanised or stainless steel
  • Very low moisture and gas permeability - no fogging
  • Flexible at low temperatures
  • High ultraviolet resistance
  • Very easy to use
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