Temperature sending unit seal

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Dec 13, 2015 | 08:18 AM

Staylor63

Thread Starter

Burning Brakes

Joined: Oct 2015

Posts: 1,085

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From: Roselle Illinois

Temperature sending unit seal

Just wanted to see what most people used when installing a new temp sending unit to insure a seal. I have heard nothing, as well as a bead of blue gasket maker.....what works best?
Steve

Dec 13, 2015 | 09:13 AM

mds3013

Melting Slicks

Joined: Mar 2009

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I use Permatex 80632 on pipe threads. Any pipe dope for plumbing would work. Start with clean and dry threads. IMHO RTV is not a good choice on pipe threads. mike...

Dec 13, 2015 | 09:50 AM

REELAV8R

Le Mans Master

Joined: Apr 2011

Posts: 6,284

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From: Hermosa

Teflon (PTFE) tape almost always works for me. Either that or a liquid thread sealer/dope. I wouldn't use RTV either.

Last edited by REELAV8R; Dec 13, 2015 at 09:51 AM.

Dec 13, 2015 | 10:47 AM

toobroketoretire

Melting Slicks

Joined: Apr 2009

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From: Great Plains Iowa

Any thread sealer will do because there will always be some contact being made to complete the circuit.

Dec 13, 2015 | 12:30 PM

Paul L

Team Owner

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From: Ontario

Dec 13, 2015 | 02:22 PM

0Willcox Corvette

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From: Jeffersonville Indiana 812-288-7103

St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15

I use Teflon tape on the first three threads only. Teflon isn't a sealer and with the NPT threads you don't need a sealer, you just need the threads to mesh properly.

Teflon tape is a lubricant that will help seat the NPT threads of the sender. Use to much of anything and you could impede the grounding of the sender.

IMHO-

Willcox