P/S 890 Class A is an aircraft integral fuel tank sealant.
Momentive Performance Materials
RTV162 White Silicone Sealant
RTV162 White Silicone Sealant is a paste, one-component, ready-to-use electronic grade silicone sealant manufactured by Momentive Performance Materials for sealing and bonding of electronic components onto printed circuit boards and protecting copper connections on electronic parts assemblies.