KD550 High-Performance Eco-Friendly Neutral Silicone Sealant_300ml

KD550 High-Performance Eco-Friendly Neutral Silicone Sealant_590ml

KEDA KD550 High-Performance Eco-Friendly Neutral Silicone Sealant

KD550 is a single-component, neutral cure, room temperature vulcanizing (RTV) silicone sealant specially designed for high-end doors, windows, and exterior wall applications. It delivers superior adhesion and exceptional weather resistance, providing long-lasting elastic waterproof sealing performance for general construction and assembly applications. This eco-friendly formula meets modern green building standards while offering professional-grade performance.

Single-component System: Neutral curing formula, ready to use with no mixing required
Safe & Non-Corrosive: Non-corrosive to glass, aluminum, and other building materials
Exceptional Durability: Excellent resistance to aging, UV rays, and water exposure
Outstanding Temperature Performance: Maintains flexibility and adhesion in both high and low temperature conditions
Superior Adhesion: Excellent bonding to most materials including glass, aluminum alloy, PVC, wood, and other common substrates
Eco-Friendly Formula: Environmentally friendly composition meeting green building requirements
Easy Application: Smooth flow and excellent tooling properties

Applocation

Sealing for interior decoration, doors, and windows
Bonding and sealing of ceramics, wood, glass, and other building materials
General-purpose construction sealing
Perimeter sealing for window and door frames
Gap filling in building construction
Various other multipurpose sealing applications

Package

Cartridge Size: 300ml, 590ml
Available Colors: Clear/Transparent, White, Black, Gray, Customized
Packaging Type: Hard tube, Sausage pack/cartridge
Shelf Life: 12 months from production date (in sealed original container)
Storage Conditions: Store in cool, dry place below 27°C

Step 1: Surface Preparation

Ensure all substrate surfaces are clean, dry, and free from contamination, dust, oil, grease, and loose particles
Remove any old sealant, paint, or coatings that may interfere with adhesion
For porous substrates, ensure they are sufficiently dry before application

Step 2: Application Preparation

Cut the cartridge nozzle at a 45° angle to desired bead size
For 590ml: Load cartridge into a standard caulking gun or power applicator
For 300ml: Load into a standard hand-held caulking gun
Prime the gun by squeezing until sealant appears at nozzle tip

Step 3: Application

Apply sealant evenly and continuously into the joint or gap
Maintain consistent pressure for uniform bead size
For best results, apply in continuous motion without stopping
Fill joints completely without air pockets

Step 4: Tooling & Finishing

Smooth and tool the sealant surface within 10-15 minutes of application before skin formation
Use a spatula or smoothing tool moistened with soapy water for best finish
Remove masking tape immediately after tooling if used
Clean any excess sealant from surfaces before it cures

Step 5: Curing

Surface begins to cure in approximately 10-20 minutes
Allow adequate curing time before exposing to stress or weather: typically 24-48 hours for light handling
Full cure achieved in 7-14 days depending on joint depth and environmental conditions
Protect from rain and moisture during initial curing period

Additional information

Product Type	Single-component neutral silicone sealant
Product Series	Swift Series – Eco-Friendly
Cure System	Moisture cure (neutral)
Skin Formation Time	10-20 minutes (23°C, 50% RH)
Tack-Free Time	20-30 minutes (23°C, 50% RH)
Curing Speed	2-4 mm/24 hours
Application Temperature	+5°C to +40°C
Service Temperature	-40°C to +150°C
Movement Capability	±25%
Hardness (Shore A)	20-35
Tensile Strength	≥0.6 MPa
Elongation at Break	≥200%
Environmental Standard	Low VOC, eco-friendly formula

Limitation

NOT for structural glazing applications
NOT suitable for materials that exude oils, plasticizers, or solvents
NOT recommended for poorly ventilated or confined spaces
NOT suitable for surfaces in direct contact with food or potable water
NOT recommended for continuous water immersion or permanently submerged applications
DO NOT apply when substrate temperature is below +4°C or above +50°C
NOT paintable (silicone does not accept paint or coatings)
NOT compatible with bituminous surfaces

Tips

Size Selection Guide:

590ml: Best for professional contractors, large-scale projects, multiple installations, commercial applications
300ml: Ideal for residential DIY projects, small repairs, single installations, homeowners, maintenance work

Eco-Friendly Benefits:

Low VOC (Volatile Organic Compound) emissions
Environmentally responsible formulation
Safe for indoor applications with adequate ventilation
Contributes to green building certification points
Reduced environmental impact during production and use

For Best Results:

Use backer rod or bond breaker tape for joints deeper than 10mm to control joint depth
Recommended joint width-to-depth ratio: 2:1 for optimal performance
Avoid three-sided adhesion which can cause joint failure
Apply in moderate temperatures (15-25°C) for best flow and cure
Do not apply in rainy conditions or when rain is expected within 24 hours

Application Tips:

Clean tools and uncured sealant immediately with mineral spirits
Cured sealant can only be removed mechanically (cutting or scraping)
Wear gloves during application to avoid skin contact
Ensure proper ventilation during application, especially indoors

Professional Installation:

For new installations, coordinate with frame installation sequence
Ensure adequate drainage design to prevent water accumulation
Consider thermal expansion when designing joint widths
Document installation conditions for warranty purposes

Color Selection:

Clear/Transparent: Best for glass applications, maintains visibility
White: Most popular for white frames, general use
Black: For dark-colored frames, contemporary designs
Gray: For aluminum frames, concrete, modern architecture

Quality Assurance:

Inspect joints for complete fill and proper tooling
Check for air pockets or gaps in application
Verify proper adhesion to all substrates
Ensure consistent bead appearance

Storage & Handling:

Store cartridges upright in cool, dry location
Rotate stock using FIFO (First In, First Out) principle
Once opened, use cartridge within one month for best performance
Do not expose to freezing temperatures or excessive heat
Protect from direct sunlight during storage

Environmental Considerations:

Ensure adequate ventilation during application and curing
Dispose of empty cartridges according to local regulations
Avoid release into water systems or soil
Follow safety data sheet (SDS) recommendations