Side-by-Side
All Purpose RTV 100% Silicone Sealant vs Sikaflex Construction Sealant
Compare cure times, application limits, and real-conditions performance for DAP's All Purpose RTV 100% Silicone Sealant and Sika's Sikaflex Construction Sealant. Adjust the sliders below for your actual temperature and humidity.
SpecificationSilicone SealantConstruction Sealant
ManufacturerDAPSika
Full cure (lab)★24h168h
Open time★10 min30 min
Dry to touch★20 min360 min
Min application temp★-4°F40°F
Max application temp★120°F100°F
Safety flagsSkinning riskNone
Compare at Your Conditions
Which should you choose for cure time?
- - All Purpose RTV 100% Silicone Sealant has the faster baseline full cure (24h vs 168h).
- - All Purpose RTV 100% Silicone Sealant allows the lower minimum application temperature (-4°F).
- - Sikaflex Construction Sealant gives more working time before assembly pressure or tooling becomes urgent.
- - Deep silicone beads need extra full-cure margin even after the surface skins.
All Purpose RTV 100% Silicone Sealant has a 24h full cure time with a 10-minute open time.
Sikaflex Construction Sealant has a 168h full cure time with a 30-minute open time.
These products serve different purposes — check each product's individual page for full substrate compatibility details before deciding.
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All Purpose RTV 100% Silicone Sealant data from manufacturer TDS · last verified May 2026.
Sikaflex Construction Sealant data from manufacturer TDS · last verified Jun 2026.
Important: Results are estimates only. Always follow manufacturer instructions. Not suitable for structural, load-bearing, or safety-critical applications.