Can someone tell me what the difference between vinyl sealer and regular sanding sealer is? Can I use vinyl sealer instead of primer, and can I use vinyl with pre-cat lacquer or regular lacquer? I what to paint a cabinet with white lacquer paint on MDF panel and I want to make sure vinyl sealer is good for this.
The vinyl sealer has better water resistant properties. I don't know the answers to the other questions. I usually self seal or use a primer for leveling purposes.
If used under cat finishes it is recommended to use a type that is copolymerized with a small amount of alkyd amino resins because the acid catalyst may attack a non catalyzed vinyl sealer. Many times it is also used for first and inter-coat adhesion needs when applying glaze and other color affects.
SW has a white vinyl sealer that would probably be a good choice as a first or second coat for you to use before you apply the white lacquer. This will help with the opacity you may need to achieve on your project. Also keep in mind that nitro white will yellow in time. If this is not wanted then you may use cab acrylic in its place. SW has a cat version of their cat clear for this if you'd like to check it out. Also keep in mind vinyl sealers do not sand easily as nitro's do and if the extra water resistance is not necessary for you, you may want to stick to your sanding sealer instead for ease of leveling your coatings.
Q. - Can I use vinyl sealer instead of primer?
A. - Why would you want to?
Q. - Can vinyl sealer be used with catalyzed lacquer and non-catalyzed lacquer?
A. - Yes.
Q. - I want to paint a cabinet with white lacquer paint on MDF panel is vinyl sealer good for this?
A. - Vinyl sealer won't give you any fill on cut or routed edges like primer will but it will seal the surfaces.