Plastikote

[j.j.]

What is an equivalent of plastikote sold in the US, preferably something that is not so expensive?

[Biscotti]

You can find Plastikote in the US through auto shops or on some online store, but it is a bit pricey. Any non-toxic acrylic or polymer sealer will do, Krylon acrylic sealer or Mod Podge are popular and usually available at your local craft/art supply stores. I personally use TriCoPolymer Wood Sealer (http://www.homedepot.com/h_d1/N-5yc1v/R-203322571/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=non+toxic+sealer&storeId=10051#.UP8sXycs6Gc) as I have mostly wooden toys and furniture and go through sealers very fast. It is VOC free and non-toxic so I really liked it.

[j.j.]

Thx Biscotti!

[Lougarry]

If it's just to seal wood and you're not bothered about colours you can also just dilute Elmer's glue with water and brush that on.