When this product direction fits
Protective systems selected for the actual temperature, thermal cycle, substrate and corrosive exposure.
High Temperature Protective Coatings
DY-26
High-Temperature Transition Sealer Primer
Protective systems selected for the actual temperature, thermal cycle, substrate and corrosive exposure.
Product overview
Protective systems selected for the actual temperature, thermal cycle, substrate and corrosive exposure.
An inorganic nano-binder coating with boron nitride, rare-earth oxides and nano-silica used to seal pores and provide a transition layer to subsequent high-temperature coatings.
Problems addressed
Porosity in thermal-sprayed metal layersPinholes over zinc-rich coatingsPoor transition adhesion to high-temperature topcoats
Selection guidance
How this system differs
The selection is driven by documented service temperature, thermal cycling and corrosive exposure rather than temperature alone.
What must be confirmed
Suitability depends on the actual substrate, medium, concentration, temperature cycle, exposure mode and application window. Final system selection and project-specific instructions require technical review.
Product features and advantages
Penetrates and seals pores
Creates a dense transition layer
Improves intercoat connection
Suitable for metal and non-metal substrates listed in source
Typical application context
Applications and operating conditions
Power & Energy · Steel · Petrochemical & Refining: application review for Thermal-sprayed metal · High-temperature equipment · Industrial kiln.
Protective systems selected for the actual temperature, thermal cycle, substrate and corrosive exposure. Confirm the substrate, exposure and maintenance access before final selection.
Suitable equipment
Industries
Power & Energy
Steel
Petrochemical & Refining
Industrial Equipment
Substrates and areas
Zinc or aluminium spray layers · Inorganic zinc coatings · Refractory and metal substrates
Operating conditions
-50°C to 1350°C stated service range
DY-26
Technical parameters
Only values available in the reviewed product source are shown.
Technical parametersValueSource
Recommended Dry Film ThicknessApproximately 30 μm for zinc-rich sealing application
Touch Dry Time≤1 h at 25±1°C
Hard Dry Time≤24 h at 25±1°C
AppearanceWhite or semi-transparentProduct source
Density1.2-1.4 g/mlProduct source
AdhesionGrade 1GB/T 1720
Fineness≤45 μmGB/T 1724
Viscosity20-25 s (No. 4 cup)GB/T 1723
Drying TimeTouch dry ≤1 h; hard dry ≤24 h at 25±1°CGB/T 1728
Alkali Resistance48 h; no blistering, cracking or rust spotsGB/T 9755
Artificial Aging Resistance600 h; no blistering, peeling or crackingGB/T 9755
Water Resistance96 h; no abnormalityGB/T 9755
Low-Temperature Stability3 cycles, no deteriorationGB/T 9755
Temperature Change Resistance5 cycles, no abnormalityGB/T 9755
Project application guidance
Confirm substrate condition, contamination, corrosion, defects and access before work starts.
Remove oil, dust and loose material; prepare cleanliness and profile to the reviewed product procedure.
Check compatibility of retained coatings and complete a representative trial area when the existing system is uncertain.
Prepare and mix only according to the product source; do not improvise ratio, thinner or pot life.
Build a continuous system in controlled layers, with special attention to edges, welds, joints and shadow zones.
Protect the applied area through curing, then inspect continuity, visible defects and recorded source-backed acceptance items.
Source-specific procedure
Surface Preparation
Metal to Sa 2.5 or St 3 with 20-30 μm roughness; non-metal substrate dry, sound and clean.
Application Environment
Normally ≥10°C; substrate ≥3°C above dew point; relative humidity ≤85%.
Mixing
For two-component form, mix as instructed on the product label, mature 10 minutes, then filter through 60-80 mesh.
Application Tools
Brush, airless spray or air-assisted spray.
Recoat Time
Apply the next coating after the sealer is hard dry.
Precautions
Begin coating promptly after substrate preparation, generally within 8 hours.
Packaging, storage and transport
Packaging15 kg/pail
StorageCool, dry and ventilated area
Shelf Life12 months unopened
TransportKeep original packaging closed
Official product source: High-temperature transition sealing coating / DY-26 PDF
Quality checks
Check surface-preparation records, environmental conditions, layer continuity, edges, welds and visible defects. Use only acceptance criteria stated in the reviewed product or project documents.
Maintenance and repair
Inspect representative high-risk locations during planned maintenance. Clean the area, identify the cause of damage, feather sound edges and verify compatibility before local repair.
Scope and limitations
Suitability depends on the actual substrate, medium, concentration, temperature cycle, exposure mode and application window. Final system selection and project-specific instructions require technical review.
Technical documents
Documents for project evaluation
TDS, SDS, MSDS, test reports and other project-related technical documents are available based on specific project requirements. Please contact us through WhatsApp.
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