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Use Pre-Cat Sanding Sealer under Pre-Cat Urethane.

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General Finishes Enduro Water-Based Sanding Sealer

Improve water and chemical resistance with this clear, sandable foundation formulated for use under any Enduro topcoat.
Item #
96% of 100

New and improved! General Finishes' Enduro Sanding Sealer is even better than its previous formula, with performance properties that allow you to get the best possible finish on your project. The water-based sealer applies easily to fill in all the pores of the wood and dries tack free in just 10-20 minutes. Has a low odor and is easy to sand. Cleans up with soap and water. Use under all General Finish topcoats except for Enduro-Var for improved water and chemical resistance.


  • New and improved formula
  • Water-based sealer dries tack free in 10-20 minutes
  • Fills in all the pores of the wood to provide an excellent undercoat
  • Easily sandable
  • Improves water and chemical resistance
  • High solids content builds a fast film

(1) Quart of General Finishes Enduro Sanding Sealer
More Information
Brand General Finishes
Manufacturer Part Number QSSS
Weight 2.3500
Tech Spec
  • Coats: 1-2
  • Dry Time at 70 Degrees: 1 Hour
  • To Sand: 2 hours
  • Suggested Application: Spray Gun
  • Suggested Surface Prep: Clean and dry wood. Sad with 220 micron between coats.
  • Shelf Life: 1 Year
  • One Quart can
  • Recommended Accuspray HVLP atomizing sets: .043-.051 tip and nozzle, No. 9-10 air cap
Size Quart
Use Interior
4.8 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Enduro Sanding Sealer
Have been using this product and it's predecesor fir years. works great. The best thing is it's quick drying time. It's almost too fast in my low humidity mountain environment.
April 12, 2018
1 year ago
Woodworking Experience:
General Finishing Sanding Sealer
I have used this product for a while and find it a good base producing product. If I am using their milk paint in a project, and do two coasts of sealer, sanding between coats to produce a good base to work from. If your base is not smooth, it will show through the milk paint.
November 25, 2017
over 2 years ago
Woodworking Experience:
It took three coats to fill in the wood grain. It was easy to apply and dried in less than an hour.
November 3, 2017
over 2 years ago
Overall, very good.
I’m used to solvent based sanding sealer which dries faster and is easier to sand. However.......the convenience of water based on small projects is too hard to resist.
July 31, 2019
5 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 11 questions Browse 11 questions and 32 answers
Why did you choose this?
Rockler Store
General Finishes!
Joe M on Oct 19, 2019
great reviews
John K on Jan 11, 2019
General Finishes!
Joe M on Oct 19, 2019
Works great!
richard t on Jun 25, 2019
great reviews
John K on Jan 11, 2019
water based
Kenn A on May 8, 2017
wood refinishing
Dennis C on Mar 18, 2017
Recommended by topcoat mfg.
Edward R R on Jan 20, 2017
Works great!
Preacher on Oct 19, 2016
Outdoor furniture finish Base
Robert C on May 7, 2016
Many days of research and found this to be one of the top rated for the near perfect finish
Philip L on Apr 27, 2016
DAVID H on Jan 17, 2016
Trying different finishing techniques
Bradley P on Jun 14, 2015
Works great!
richard t on Jun 25, 2019
water based
Kenn A on May 8, 2017
I am staining maple interior doors a dark cherry. Should I use sanding sealer first?
Rich E on Sep 23, 2016
BEST ANSWER: The main reason for using sanding sealer before staining is to allow even absorption of the stain. You can also use shellac, just make sure it's dewaxed, and dilute it one to one with denatured alcohol. Both work well. I would try it out on a sample piece first before doing your doors.
can you use sanding sealer before stain?
Elaine L on Jun 2, 2016
BEST ANSWER: Geeze... I'm not sure Elaine. I used it to seal edges before paint. As I think about stain and its basic principles, I would not think that the sealer before stain would give you the kind of look you would want.
Can this sealer be applied OVER a darker, GF water-based dye stain to smooth the wood before gloss (High Performance Gloss) topcoats, and not take up or cloud the dye stain? Looking for an final, mirror finish on maple.
Kevin on Aug 14, 2018
BEST ANSWER: Yes? Just read the directions on your top coat before you use either product. For example; the GF enduro-var water based topcoat says to not use over sanding sealer. Just make sure all the products you are using are compatible.
Can it be applied using a foam brush or does it need a sprayer?
John Q on Aug 26, 2015
BEST ANSWER: I'd go with a sprayer for sure. I have not been successful using a foam brush. The foam brush will leave a lot of air bubbles in the sealer and they don't go away as it dries.
Does the sand sealer help stop the grain from raising? Fast build?
Bob B on Jan 10, 2018
BEST ANSWER: Yes, it does. It is thicker than you might it really does fill in the pores of the wood and allows you to get a great finish.
If I use a grain filler do I need a sanding sealer?
Tim R on Feb 24, 2017
BEST ANSWER: The answer depends on the coat you put on next. And the answer is simplest if you stay within the General Finishes family of products. For an opaque coating, the Milk Paints produce a very nice matte finish in various colors. These paints are self-priming, so you really don't need a sanding sealer. For clear coatings you can use High Performance Polyurethane finish which is a clear finish good for lighter woods. I have used the sanding sealer for this, but have also used the polyurethane by itself. For darker woods, the Enduro-Var finish produces a nice amber tone. General Finishes recommends using this as the first coat (for adhesion reasons), so you don't want to use the sanding sealer. These finishes can be brushed or sprayed. I have had the best results spraying with an HVLP system. Follow the manufacturer's directions for application. It is also good to do a sample process first on a scrap to make sure everything works as desired.
General Finishes High Performance Water-based Top Coat Gloss
General Finishes High Performance Water-based Top Coat Gloss
General Finishes Enduro-Var Water Based Urethane Top Coast Satin
General Finishes Enduro-Var Water Based Urethane Top Coast Satin
Can i use it under oil base poly?
Mikee on Apr 9, 2016
BEST ANSWER: No. I only use it under water based finishes
how to sand new wood cabinet doors after applying sanding sealer?
A shopper on Jun 16, 2015
BEST ANSWER: Sanding sealer is made soft and easy to sand. If you stained the wood first, you need to be a little more paranoid about sanding too aggressively and cutting through the stain in spots, or edges. I use 3M softback sanding sponges cut in half because they conform well and don't strip edges nearly as fast. And I finish sand by hand using touch and elbow grease. You're almost done, it's a good time to take more care and not rush. Use oblique lighting (look across the surface towards the light to reveal spots needing more attention). Practice on the backs or other places where minor blemishes are less visible.
Can laquer be sprayed over it?
RANDY H on Aug 6, 2018
BEST ANSWER: absolutely, I would use multiple coats of the sealer. Especially with the more open grain wood, oak, ash, jatoba.
Have fun
How to spray this thing? GF says it can be sprayed right out the can with 1.2-1.4 nozzle. I'm using 1.8 nozzle and still had to thin it to make it spray and when it did, it was very thin coats. When I sprayed it with 1.2 nozzle, I had to dilute so much that it was basically water and when I set the piece to dry on a little tilted surface (my floor isnt perfect), the finish flowed from side of the piece to the other and formed a puddle. What am I doing wrong?
Danny on Dec 6, 2016
WARNING: This product can expose you to Toluene, which is known to the State of California to cause birth defects or other reproductive harm.