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Sika Duoflex 5050 Primer
Sika Duoflex Primer-5050 is a two-component epoxy primer in a 1/4 gallon unit for Duoflex NS and SL polysulfide sealants. It primes porous and dense substrates so the joint sealant bonds for the long haul.
- Epoxy primer matched to Duoflex polysulfide sealants
- Low viscosity for easy brush work across the joint face
- Same-day sealing after the primer reaches touch dry
$208.89
Availability:
In stock
( 18 Available )
Sika Duoflex Primer-5050
Sika Duoflex Primer-5050 is a two-component low-viscosity adhesion-promoting epoxy primer for Duoflex NS and SL polysulfide sealants. This 1/4 gallon unit (part 462101) mixes 1:1 by volume, holds a pot life of approximately 3 hours, and dries to the touch in approximately 2 hours on concrete or 4 hours on steel at 73 F. Place Duoflex sealant after that dry window and within 36 hours maximum.
Key Features
- Two-component low-viscosity adhesion-promoting epoxy primer
- Mix ratio A:B = 1:1 by volume; pot life approximately 3 hours
- Reaches touch dry in approximately 2 hours across concrete and 4 hours across steel at 73 F
- Maximum waiting time before sealant approximately 36 hours
- Coverage reaches approximately 700 to 800 ln ft per unit across concrete at 3 to 5 mils
- VOC approximately 50 g/L; 65% solids by volume
Applications
- Priming concrete ahead of Duoflex NS or SL polysulfide sealants
- Priming steel substrates before Duoflex joint sealing
- Porous and dense substrates that need maximum Duoflex adhesion
- Industrial and commercial joints where a 1:1 epoxy primer is specified
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer | Sika |
| Product | Sika Duoflex Primer-5050 |
| Part no. | 462101 |
| Unit | 1/4 gallon unit |
| Chemistry | Two-component epoxy primer |
| Mix ratio | 1:1 by volume |
| Pot life | Approximately 3 hours |
| Dry concrete / steel at 73 F | Approximately 2 / 4 hours |
| Max wait before sealant | Approximately 36 hours |
| VOC | Approximately 50 g/L |
Product documents: Sika Duoflex Primer-5050 Product Data Sheet (PDF)
Frequently Asked Questions
What sealants pair with Sika Duoflex Primer-5050?
Sika Duoflex NS and SL polysulfide sealants on porous and dense substrates including concrete and steel.
What mix ratio and pot life apply for Sika Duoflex Primer-5050?
Mix A:B = 1:1 by volume. Pot life is approximately 3 hours.
What dry time applies before placing Duoflex sealant over Sika Duoflex Primer-5050?
Approximately 2 hours on concrete and 4 hours on steel at 73 F, with a maximum wait of approximately 36 hours.
What coverage should crews plan for Sika Duoflex Primer-5050?
Approximately 700 to 800 ln ft per unit on concrete at 3 to 5 mils, and approximately 1,100 to 1,300 ln ft per unit on steel at 2 to 3 mils.
What happens if the 36-hour window is missed for Sika Duoflex Primer-5050?
Clean and re-prime before placing Duoflex sealant, because sealing too late or too soon can hurt adhesion.
What size is Sika Duoflex Primer-5050?
The unit is 1/4 gallon, part 462101.
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