Polysulfide Rubber PTR

The first introduction of a PTR for commercial application was in 1930, when Morton Thiokol Company Corp. developed Thiokol (acquired by PolySpec, Corporation). Since then, a number of other types of Thiokol have been developed (www. polyspec.com). Thiokol resins are highly impermeable to gases, and have excellent resistance to ozone, oxidation, weathering, and aliphatic and 

Snogren, however, does not recommend chlorination for treating polysulfide. 

An example of a silicone primer for use with polysulfide sealants is Chemlok AP-131 (LORD Corporation).  

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