ok SEALANTS: rtv..silicone..whats the deal?

ablaze · 04-05-2002, 01:31 PM

lets say if I wanna seal my pumps for leaks..whats the difference between silicone sealants and RTV sealants? and what the heck is RTV-SILICONE sealant?? i'm all confused now..argh :shrug:

jaydee · 04-05-2002, 02:26 PM

I use "Industrial Grade RTV Silicone Sealant" at work to seal gutters and what not. Works great for sealing up my water blocks. If you use screwes to tighten the top down the stuff makes an awsome glue aswell. You really have to beat on it to get the top back off. RTV basically means it can withstand high temperatures. The stuff I use can handle up to 500F. Regular silicone sealant isn't made to handle the higher heat ranges.

Both are silicone based, but RTV stuff adds "iron-oxide" for the extra temp resistance. Regular silicone sealant does not have that.

ablaze · 04-05-2002, 02:48 PM

thanks for the reply JD!

ok so RTV is good. but I read that its soo good that is virtually impossible to remove? I have some silicone sealant (non-RTV) at home and its not the easiest thing to scrape off..but it seems to be do-able. is RTV really that much more difficult to remove?

also..any idea what the usual operating temps are for regular clear silicone sealant? (I have the Devcon one)

jaydee · 04-05-2002, 04:25 PM

Quote:

Originally posted by ablaze
thanks for the reply JD!

ok so RTV is good. but I read that its soo good that is virtually impossible to remove? I have some silicone sealant (non-RTV) at home and its not the easiest thing to scrape off..but it seems to be do-able. is RTV really that much more difficult to remove?

also..any idea what the usual operating temps are for regular clear silicone sealant? (I have the Devcon one)

RTV silicone is not extreamly hard to remove. Just the same as regular. Just have to rub it off. I am not sure about that one you have. All I can find on their site is the RTV Clear/white which is good to 450F. http://www.devcon.com/devconfamilypr...m?familyid=171

Cyco-Dude · 04-06-2002, 01:06 AM

go to an auto parts store and grab yourself a 2 dollar tube of water pump RTV silicone.

DigitalChaos · 04-06-2002, 01:27 AM

you can use GOOP too =)

ablaze · 04-06-2002, 03:45 AM

whats GOOP? its not some funky name for stuff you can "make" yourself right

mm..is there a difference between water pump silicone RTV and reguler RTV?

Cyco-Dude · 04-06-2002, 03:51 AM

there are different temperature ranges of RTV silicone. you have your 'normal' black junk, then the red RTV (for high-temp applications; i.e.; valve covers, etc.), and the blue water pump RTV is just more resistant to coolant chemicals (glycols, other addatives) and is safe for thermostats (doesnt corrode sensors).

GOOP is just...well, GOOP LOL!! like plumbers goop, etc. its kinda like silicone, but not

ablaze · 04-06-2002, 07:52 AM

so for pump sealing and typical temps we get..any of the above sealants is fine right? even the non-RTV ones right?

Leuf · 04-06-2002, 09:14 AM

I'm probably wrong on this, but aren't all silicones RTV? RTV just means room temperature vulcanization.. ie, it sets up at room temp.

jaydee · 04-06-2002, 09:26 AM

Quote:

Originally posted by Leuf
I'm probably wrong on this, but aren't all silicones RTV? RTV just means room temperature vulcanization.. ie, it sets up at room temp.

Could very well be. I never seen RTV on the cheaper silicons, but I guess that dosn't mean it isn't.

Joe · 04-06-2002, 09:35 AM

I recomend you read this article:

http://www.procooling.com/articles/h...r_coolin.shtml

jaydee · 04-06-2002, 09:44 AM

Quote:

Originally posted by Joe
I recomend you read this article:

http://www.procooling.com/articles/h...r_coolin.shtml

Good article!!! The stuff I use comes in a tube that you use in a caulk gun. It says right on it that is has that acid. I onlu use to seal the tops of my blocks though and I let it dry before I install it.

ablaze · 04-06-2002, 09:45 AM

Quote:

Originally posted by Joe
I recomend you read this article:

http://www.procooling.com/articles/h...r_coolin.shtml

wow. FANTASTIC article there Joe! how in the world did I miss that

one thing though. it never covered anything about REMOVAL of these silicones? any easy way other than say scraping it off with a fingernal or two?

sunblade · 04-06-2002, 01:52 PM

I agree with Joe in that article, goop is the best stuff ever (well, maybe not ever, but it's nice)!

I've used it on a mini-airtrap and a barb I had to DIY onto a pump. At first I was nervous if it would leak or not, but each time it worked just fine, I wouldn't be surprised if I put too much on, heh. So, yeah, just another testimonial for the stuff. I'm using the plumbers variety myself.

04-05-2002, 01:31 PM	#1
ablaze Cooling Savant Join Date: Mar 2002 Location: Singapore! Posts: 124	ok SEALANTS: rtv..silicone..whats the deal? lets say if I wanna seal my pumps for leaks..whats the difference between silicone sealants and RTV sealants? and what the heck is RTV-SILICONE sealant?? i'm all confused now..argh :shrug:

04-06-2002, 09:35 AM	#12
Joe The Pro/Life Support System Join Date: Dec 1999 Location: Denver, CO Posts: 4,041	I recomend you read this article: http://www.procooling.com/articles/h...r_coolin.shtml __________________ Joe - I only take this hat off for one thing... ProCooling archive curator and dusty skeleton.

04-05-2002, 02:26 PM	#2
jaydee Put up or Shut Up Join Date: Dec 2001 Location: Spokane WA Posts: 6,506	I use "Industrial Grade RTV Silicone Sealant" at work to seal gutters and what not. Works great for sealing up my water blocks. If you use screwes to tighten the top down the stuff makes an awsome glue aswell. You really have to beat on it to get the top back off. RTV basically means it can withstand high temperatures. The stuff I use can handle up to 500F. Regular silicone sealant isn't made to handle the higher heat ranges. Both are silicone based, but RTV stuff adds "iron-oxide" for the extra temp resistance. Regular silicone sealant does not have that.

04-05-2002, 02:48 PM	#3
ablaze Cooling Savant Join Date: Mar 2002 Location: Singapore! Posts: 124	thanks for the reply JD! ok so RTV is good. but I read that its soo good that is virtually impossible to remove? I have some silicone sealant (non-RTV) at home and its not the easiest thing to scrape off..but it seems to be do-able. is RTV really that much more difficult to remove? also..any idea what the usual operating temps are for regular clear silicone sealant? (I have the Devcon one)

04-06-2002, 01:06 AM	#5
Cyco-Dude Cooling Savant Join Date: Feb 2002 Location: Dayton, Ohio Posts: 836	go to an auto parts store and grab yourself a 2 dollar tube of water pump RTV silicone.

04-06-2002, 01:27 AM	#6
DigitalChaos Cooling Savant Join Date: Jan 2002 Location: Waukesha, Wi Posts: 698	you can use GOOP too =)

04-06-2002, 03:45 AM	#7
ablaze Cooling Savant Join Date: Mar 2002 Location: Singapore! Posts: 124	whats GOOP? its not some funky name for stuff you can "make" yourself right mm..is there a difference between water pump silicone RTV and reguler RTV?

04-06-2002, 03:51 AM	#8
Cyco-Dude Cooling Savant Join Date: Feb 2002 Location: Dayton, Ohio Posts: 836	there are different temperature ranges of RTV silicone. you have your 'normal' black junk, then the red RTV (for high-temp applications; i.e.; valve covers, etc.), and the blue water pump RTV is just more resistant to coolant chemicals (glycols, other addatives) and is safe for thermostats (doesnt corrode sensors). GOOP is just...well, GOOP LOL!! like plumbers goop, etc. its kinda like silicone, but not

04-06-2002, 07:52 AM	#9
ablaze Cooling Savant Join Date: Mar 2002 Location: Singapore! Posts: 124	so for pump sealing and typical temps we get..any of the above sealants is fine right? even the non-RTV ones right?

04-06-2002, 09:14 AM	#10
Leuf Cooling Neophyte Join Date: Dec 2001 Posts: 56	I'm probably wrong on this, but aren't all silicones RTV? RTV just means room temperature vulcanization.. ie, it sets up at room temp.

04-06-2002, 01:52 PM	#15
sunblade Registered User Join Date: Jul 2001 Location: USA Posts: 156	I agree with Joe in that article, goop is the best stuff ever (well, maybe not ever, but it's nice)! I've used it on a mini-airtrap and a barb I had to DIY onto a pump. At first I was nervous if it would leak or not, but each time it worked just fine, I wouldn't be surprised if I put too much on, heh. So, yeah, just another testimonial for the stuff. I'm using the plumbers variety myself.

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