"Plugs" for factory holes in the floor pans

[BillR. CLC # 29203]

Asking for some guidance:
#1 Not sure what they are called so before I start thumbing my way through RubbertheRightWay I thought I would ask what they are called.
      Different size holes to be plugged, maybe 12 in total.
#2 Is it best to plug the holes and then apply sound deadening over the "plug" or sound deadening first, restablish the hole and then "plug"?
      Thanks.
      Bill Rodwick
      CLC #29203

[BillR. CLC # 29203]

I neglected to mention in my first post.....it's a 1959   Thanks

[59-in-pieces]

Bill,
Yes there are bunches of them front & back floors - trunk floor.

As far as I know they are "floor plugs".

Don't forget to measure the holes, as there are at least 1/2", 3/4" and 1".
And the top overlap of the plug itself, is way larger than the hole you measure.

Buy only the rubber ones - see the pic.
There are cheap as...d plastic ones, that pop out easily.

Oh, plug first, then put over them the sound proofing - mat horse hair back in the day - no Dynomat(?).

Have fun,
Steve B.

[BillR. CLC # 29203]

Steve B.,
Many thanks.
Bill Rodwick

[cadman56]

I've been looking for the 3/4" rubber plugs and have not been able to find them anywhere.  Any ideas?  Thanks, Larry

[BillR. CLC # 29203]

Larry,
We have been looking as well.
Our fallback position might be to bore the smaller ones out to 1" diameter if we can't find suitable smaller ones.
If we find them I will post our source.
Thanks.
Bill

[35-709]

I have purchased these before, work well, good quality.  Don't match factory originals exactly, but who's gonna look?
http://www.ebay.com/itm/6-Rubber-Grommets-Without-Hole-Rubber-Plug-Solid-Grommet-3-4-Diameter-/261779730122 

This vendor has many sizes and styles of plugs, grommets, etc., etc.

[Chuck Swanson]

Just saw these 3/4 too http://www.ebay.com/itm/NOS-GM-Wheel-Well-Trunk-Side-Plugs-Camaro-Nova-GTO-442-RS-SS-Z28-/391739405006?fits=Year%3A1967%7CSubmodel%3ANova&hash=item5b357cf2ce:g:CU4AAOxyeZNTUr5x&vxp=mtr

Chuck

[AlchemyPFM]

Ill add in mcmaster.com like an old school hardware store but online, if you can imagine it they should have it!

I just bought plugs similar to that, for that exact reason I think they were 7/8 for about a nickel a piece.

just for future reference

[BillR. CLC # 29203]

Found an assortment of rubber and plastic plugs at Skycraft Surplus in Orlando, Florida just off Interstate 4, east on Fairbanks and on the left.     http://www.skycraftsurplus.com/
Managed to get close to the sizes we needed.
Heated up the plastic ones with a short burst of the heat gun and they slipped into place.
Thanks for all the help.
Bill Rodwick  CLC # 29203