Goop Newmar uses to seal electrical and plumbing from bay up into coach ??

[SteveMA]

Anyone have definitive info on what the black goop is that Newmar uses to seal penetrations up from the bay for water and electrical? Doing some electrical work up to the main panel as well as some maintenance on plumbing PEX that has come loose. Newmar just squirts the goop on the pipes and over time they come loose from the bay membrane. While I am asking - anyone know what the tape is they use to patch the bottom membrane? - I called CS and parts, failed to get answers (so far).
Thanks

 

[Neal]

Sikaflex 221 sealant

https://www.amazon.com/Sikaflex-Black-Sealant-Adhesive-10-1/dp/B075459TRB?tag=rvf01-20

 

[SteveMA]

Thanks!

 

[scottramer]

I used this on the on the underside lining of the basement, it works well.

Gorilla Waterproof Patch & Seal Tape 4" x 10' Black, (Pack of 1) https://www.amazon.com/dp/B07HSKRYQW?tag=rvf01-20

Then this for the wonderful black expandable foam crap that Newmar uses everywhere.

Great Stuff 99112876 Smart Dispenser Multipurpose Black, 12 Oz. https://www.amazon.com/dp/B07JD35J14?tag=rvf01-20

 

[SteveMA]

thank you