Butyl Sealant for Primary Sealing
JOINSIL 121 is a one part, solvent free, non-fogging butyl sealant based on polyisobutylene. It has excellent adhesion to glass, aluminum, galvanizing zinc and stainless steel.
It can be used for the manufacture of insulating glass units in conjunction with an elastic sealant compound like silicone or polysulfide sealant.
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