Oct 18, 2004 01:47
20 yrs ago
5 viewers *
English term

The difference between sealer and primer?

English Tech/Engineering Engineering (general)
I'd love it if someone could shed some light for me.
The sealer in question is an industrial product, to be sprayed directly on metal (but primer is advised for larger surfaces. I need this translated in French and was given "apprêt" for both terms.
A friend who used to work in the automotove industry (but unfortunately, doesn't speak French) maintains that sealer and primer are two very different things.
So I guess if I could understand the difference between these two products, it would help me choose whether to translate both of them with the same French word (apprêt).
Thanks a lot for your help

Responses

+5
7 mins
Selected

Some paint glossary definitions

Sealer: A liquid coat that seals wood, plaster, etc., and prevents the surface from absorbing paint or varnish. Sealers may be transparent, and can act as primers. Some sealers are designed to be left uncoated.

Primer: The first complete coat of paint applied in a painting system. Many primers are designed to provide adequate adhesion between the surface and subsequent topcoats. Most primers contain some pigment, some lend uniformity to the topcoat, some inhibit corrosion or the substrate, and some stop the discoloration of the topcoat.

Primer-Sealer: A priming system that minimizes or prevents the penetration of the topcoat into the substrate.

http://www.behr.com/behrx/glossary/glossary.jsp?letter=P
Peer comment(s):

agree Hacene
3 hrs
agree Gillian Scheibelein : sealer acts as a barrier (e.g. oxygen/water to prevent corrosion), primer = primarily promotes adhesion between the next (coloured) coat and the substrate
4 hrs
agree airmailrpl : - and with Gillian Scheibelein
5 hrs
agree Tatiana Nero (X)
11 hrs
agree Jörgen Slet
15 hrs
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Kim's answer was the most helpful, but many thanks to all of you. "
+1
2 mins

prevention of coats of paint or varnish from sinking in // preparation for other coats to be applied

sealer // primer

Mike :)

--------------------------------------------------
Note added at 3 mins (2004-10-18 01:50:42 GMT)
--------------------------------------------------

Merriam-Webster

See second meaning of \"sealer\"

Main Entry:1seal£er
Pronunciation:*s*-l*r
Function:noun
Date:15th century

1 : an official who attests or certifies conformity to a standard of correctness
2 : a coat (as of size) applied to prevent subsequent coats of paint or varnish from sinking in

--------------------------------------------------
Note added at 5 mins (2004-10-18 01:52:27 GMT)
--------------------------------------------------

The prime coat is the act of \"priming\" as in the third meaning of the verb \"prime\" also in the Merriam-Webster Dictionary:

3 : to apply the first color, coating, or preparation to *prime a wall*
Peer comment(s):

agree Hacene
3 hrs
Something went wrong...
6 mins

primer is a precoating, a basic preparation, followed by a sealer preventing water from penetrating

the two products have a different chemical composition, as the primer does not seal.
Peer comment(s):

agree Hacene
3 hrs
disagree Tony M : This is not the most common way these words are used; a sealer prepares the surface (to prevent excessive abosrbancy, for example) while a primer provides a suitable base for subsequent finishes.
6 hrs
Something went wrong...
+1
14 mins

see explanation below

Sealer :A coating used on absorbent surfaces prior to painting.

Primer :The first coat of paint applied to a surface, formulated to have good bonding, wetting and inhibiting properties.

SEALER: A thin liquid applied to seal a surface, to prevent previous paint from bleeding through from the surface or to prevent undue absorption of the topcoat into the substrate.

PRIME COAT OR PRIMER: The first coat or undercoat that helps bind the topcoat to the substrate.

Peer comment(s):

agree airmailrpl : -
4 hrs
thanx
Something went wrong...
Term search
  • All of ProZ.com
  • Term search
  • Jobs
  • Forums
  • Multiple search