Sealing my waterblock?

llarrythelizzar · 11-30-2002, 03:44 PM

Hello all, this is my first post so please bear with me.
I was wondering how everyone felt about RTV Silicon as a waterblock sealant. Has anyone used this before or even read about people who have? My block design uses a copper base and aluminum block could I solder these two metals together?

crane · 11-30-2002, 04:28 PM

I have soldered Al to Al and I have soldered Al to Cu....but its not easy. I used a aluminum brazing flux and silver solder. Its pretty wild to see Al tin up with silver solder.
I suggest using plumbers goop or Permatex as a sealant.... the Permatex sealed blocks I made were joined so tightly I had to use a torch to seperate the halfs.Cutting a groove all the way around the inside edge of the mating halfs will leave a nice bead of sealant even after clamping the pieces together.

11-30-2002, 03:44 PM	#1
llarrythelizzar Cooling Neophyte Join Date: Nov 2002 Location: Everywhere Posts: 4	Sealing my waterblock? Hello all, this is my first post so please bear with me. I was wondering how everyone felt about RTV Silicon as a waterblock sealant. Has anyone used this before or even read about people who have? My block design uses a copper base and aluminum block could I solder these two metals together?

11-30-2002, 04:28 PM	#2
crane Cooling Neophyte Join Date: May 2002 Location: so cal Posts: 82	I have soldered Al to Al and I have soldered Al to Cu....but its not easy. I used a aluminum brazing flux and silver solder. Its pretty wild to see Al tin up with silver solder. I suggest using plumbers goop or Permatex as a sealant.... the Permatex sealed blocks I made were joined so tightly I had to use a torch to seperate the halfs.Cutting a groove all the way around the inside edge of the mating halfs will leave a nice bead of sealant even after clamping the pieces together. __________________ dirt rules

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