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Old 04-07-2021, 09:06 PM   #1
Rich72C10
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Question Water Pump Plugs - Best Way to Seal Them?

So got a new ACDelco Professional water pump and there are two holes I need to cap off, I have the brass plugs but what is the best/proper way to seal them from leaking?

A ton of Teflon tape?
Pipe dope?

Thanks - I don't want leaks!

<searched for the answer, guess I am stupid and the only that doesn't know>
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Old 04-07-2021, 09:36 PM   #2
Stocker
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Re: Water Pump Plugs - Best Way to Seal Them?

I use teflon pipe compound, then wrap a couple layers of teflon tape over the compound. No leaks.
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Old 04-07-2021, 09:42 PM   #3
Rich72C10
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Re: Water Pump Plugs - Best Way to Seal Them?

Hmm teflon tape compound ... going to look that up. That I don’t have.
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Old 04-07-2021, 09:49 PM   #4
Stocker
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Re: Water Pump Plugs - Best Way to Seal Them?

Teflon pipe compound is just pipe dope made with teflon. Any hardware store will have it and teflon tape in the plumbing section.
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Old 04-07-2021, 10:02 PM   #5
Steeveedee
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Re: Water Pump Plugs - Best Way to Seal Them?

Any good sealant will do the trick; you don't need anything special. I've used #1 and #2 Permatex, blue and black RTV, Indian Head shellac, whatever I had on hand. If it were mine, though, I'd use plugs with a 3/8" square drive or hex that is inset. Don't need that big ugly head sticking out...
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Old 04-07-2021, 10:03 PM   #6
Rich72C10
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Re: Water Pump Plugs - Best Way to Seal Them?

Orileys didnt have any innies :-(
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Old 04-07-2021, 10:11 PM   #7
jocko
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Re: Water Pump Plugs - Best Way to Seal Them?

I've always used just teflon tape and nothing else - never leaked. Amazon will have 3/8 drive pipe plugs to your door in 24 hrs, it's worth the wait (I agree w/Steveedee's note on the plugs)
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Old 04-07-2021, 11:47 PM   #8
Rich72C10
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Re: Water Pump Plugs - Best Way to Seal Them?

You guys are killing me.... ordered for both holes - Brass Pipe Fitting, Hex Drive Countersunk Plug. One is 1/4 and the other is 3/8.

I think I'll do a good wrap with Teflon Tape - I have tons of that stuff laying around.
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Old 04-08-2021, 01:14 AM   #9
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Re: Water Pump Plugs - Best Way to Seal Them?

Snug them up but do not over tighten them, you can crack the pump housing when using teflon as a lubricant
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Old 04-08-2021, 01:32 AM   #10
Warrens69GMC
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Re: Water Pump Plugs - Best Way to Seal Them?

Don't care if they come out again? Black or Blue silicone ...
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Old Today, 05:34 PM   #11
Rich72C10
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Re: Water Pump Plugs - Best Way to Seal Them?

The Right Stuff Black sealed with innie plugs, primed and painted! Time to dry, then install!
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