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Yesterday, 05:09 PM
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#1 |
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Senior Member
 
Join Date: Jul 2000
Location: North Texas
Posts: 3,614
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Gasket sealant
It's been a while since I did any work requiring gasket sealant. Getting ready to replace a fuel pump and water pump on a Gen I 350.
What do you guys recommend for oil- and coolant-resistant sealants these days? Hi-Temp RTV or something more traditional?
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Mike 1969 C10 LWB -- owned for 36 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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Yesterday, 06:30 PM
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#2 |
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Registered User
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,989
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Re: Gasket sealant
For those applications I like to coat gaskets with Permatex Aviation Form-a-gasket.
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I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
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Yesterday, 06:49 PM
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#3 | |
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Senior Member
Join Date: Jul 2000
Location: North Texas
Posts: 3,614
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Re: Gasket sealant
Quote:
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Mike 1969 C10 LWB -- owned for 36 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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Today, 01:44 AM
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#4 |
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Registered User
Join Date: Dec 2012
Location: Temple City
Posts: 3,646
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Re: Gasket sealant
I myself just use black rtv.
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Today, 07:19 AM
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#5 |
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Active Member
Join Date: Mar 2022
Location: Hinesburg Vermont
Posts: 153
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Re: Gasket sealant
I use a thin coat of loctite 518 anaerobic sealer on each mating surface of basically anything I assemble regardless of where. Diff covers, oil pans, water pump gaskets. Put a couple dabs on the surface, smooth with your finger to make an even thin film and send it away.
On gaskets that have a “ridge” molded into the rubber gasket like LS intake, throttle body, etc….i just leave them alone and install dry. |
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Today, 11:55 AM
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#6 |
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Registered User
Join Date: Jun 2019
Location: Chehalis, WA
Posts: 105
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Re: Gasket sealant
RTV Black for anything coolant.
Aviation form-a-gasket for anything fuel/oil. Last edited by Willshook; Today at 01:59 PM. |
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Today, 05:59 PM
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#7 |
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Registered User
Join Date: Feb 2011
Location: Under the Truck Dreaming
Posts: 761
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Re: Gasket sealant
Permatex Gear Oil Gasket Maker 81182. This stuff is really good.
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72 K20 Custom Camper, D60, 14BFF, full roller 406 TPI w custom built ECU and yes..it has tow hooks...and a 5 speed |
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