A steel washer on the water side and a galvanized washer topped with a threaded stud and nut on the outside with a rubber plug in between.
Rubber freeze plug review.
I personally would use and have used a rubber expansion plug in a emergency situation race boat.
Universal expansion plugs suck.
The rubber plugs poked in there snugly and after tightening em down they feel quite secure tried to pry them out with a screwdriver and pliers to test them and they don t even budge.
Also check your local autozone for your freeze plugs.
For an extra little bit of security put a thin bead of rtv around it before you hammer it in.
Rubber winterizing expansion plug 1 5 plug size 8.
Yes i know what the inside and outside of a expansion rubber freeze plug is made of.
4 2 out of 5 stars 347 8 95 8.
Get a standard stamped steel expansion plug find a socket that s just small enough to fit in it without getting stuck and hammer it in place.
Okay i got a nice surprise from my 84 last night when i found one of the freeze plugs on the truck had bit the dust in the worst possible way.
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Started er up burped the system let it warm up and rev ed it a bit not a single drop of leakage.
Rubber plug for 3 4 and 1 inch pipe.