Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® STP 31350
SiSiB® STP 31350

Silane Terminated Polyether

SiSiB® STP31350 is alkoxy silane terminated polyether polymer. It could be applied in moisture curing elastic sealant, elastic structure sealant and sealing coatings. Sealants based on SiSiB® STP31350 not only have excellent adhesion properties, but also have adhesion to broad range of substrates. 

Different from polyurethane and silicone system, this formulation have no solvent and isocyanate, as well as no bubbles and odor generated from curing. It is especially suitable for silicone construction industry, transportation industry and general industry application.

SiSiB® STP 31350

Technical Data


Silane Terminated Polyether


Pale yellow transparent liquid

Boiling point:



1.0 g/cm3


35000-55000 mPa·s (25℃)

Flash Point:



Virtually Insoluble

Shelf Life:

≥12 months (25℃/50% RH)


  • STP31350 STP polymer is used as base polymer in elastic sealants, elastic structure sealants, encapsulate adhesives and coatings. The curing mode of the polymer is moisture curing. It can be made into a single component or two-components system.

  • Transportation industry elastic sealant

  • Personal DIY sealant

  • Eco-friendly decoration sealant

Packing and Storage

  • SiSiB® STP31350 is supplied in 200Kg steel drum or 1000Kg IBC tote.

  • In the unopened original container SiSiB® STP31350 has a shelf life of one year in a dry and cool place.

Sample? Literature? Pricing? Technical?
Recommended Silane Terminated Polyether Products
SiSiB® STP 31350