[Spridgets] 3M seam sealer

[Michael Rowe]

I got the following reply to a question about 3M seam sealers:

(Some of your seam sealers are called "bare metal."  Does that mean
all other sealers must be put on over primer?)

You are correct in your understanding. Most autobody seam sealers do not
contain anti-corrosion agents and should be applied over an anti-corrosive
coating or primer to protect metal beneath the seam sealer. An exception to
this is the 3M(TM) Automix(TM) Bare-Metal Seam Sealer - Beige, 08310 which
does correct an anti-corrosion agent specifically to allow the seam sealer
to be applied directly to bare metals.

Best Regards,

Jonathan