28x50 - Clear Sanding Sealer/Fill Coat (Polyester) (GALLON)
1 Gallon

28x50 - Clear Sanding Sealer/Fill Coat (Polyester) (GALLON)

21-PRESTEC 28x50-G
  • In Stock: Available for same day shipping if ordered by 12 p.m. (PST)
  • Description: 28x50 is a clear, easy to sand, quick build primer that quickly fills uneven surfaces and major imperfections up to 60 mils. It is a low VOC product that has virtually no porosity and can be brushed on. It is a perfect primer for all Prestec top coats.
  • Special Handling Fee: This item is considered hazardous in volumes greater than gallon sizes and will include a special handling fee when ordered in individual units with volumes greater than a gallon. If shipped by air, this item will always require a special handling fee, regardless of volume.
  • Manufacturer: Prestec

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MEKP Catalyst/Hardener (Included at No Cost)
Please Include Catalyst
Catalyst Not Needed


Gel Time: 16-20 min @ 77º F


Coverage (16 mils): 100 sf/gal


Flash Point: 95º F


Shelf Life: 6 months @ 68º F

Feature 5

Dust Free Time: 45 min @ 77º
Click for TDS
Click for Catalyst Guide Chart

Product Features
- Clear
- Rapid build sealer
- Quickly fills uneven surfaces
- Easy sanding prep for surface primer and Prestec top coats
- Low Voc Product
- Eliminates the need for PVA or wax surfacing agent

Product Applications
- Substrate sealer - Wood, MDF, Fiber Glass, Carbon Fiber, Tooling Board (Urethane and Epoxy)
- Post application pinhole filler Carbon Fiber
- Marine application/ Ty Coat
- In mold polyester Ty Coat/Epoxy
- Musical instruments/Furniture Sealer

Application Suggestions
- Mix contents of can thoroughly
Optimum temperature of 77º F
- Catalyze at 2% w/ MEKP initiator (0.5 oz/quart); Mix well
- Utilization of HVLP spray gun optimizes finish
- Tip size 1.7- 2.0 mm
- Air pressure 25-40 PSI
Allow full cure (24 hours) prior to sand and polish or top coat application
- Maintain 12-18" distance between gun and surface
- Start with a flash coat (2 mils). Wait 2 minutes then start building coats of 4 mils per pass, up to optimum 24 mils 
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