Description
Sika Sikasil-N Plus Clear Sealant for Marine Use | Boat Supply | Boat Supply Store
This one-component, neutral cure silicone sealant is engineered to provide exceptionally long service life and superior flexibility, ensuring durable, watertight seals essential for combating the ingress of moisture in marine environments. It meets stringent ASTM C-920, Type S, Grade NS, Class 25 specifications, offering excellent adhesion to a broad spectrum of substrates including fiberglass, aluminum, and treated wood without the need for primers. The integrated fungicide additive provides robust mildew resistance, making it ideal for sealing hatches, window frames, and expansion joints on vessels operating in humid conditions or coastal waterways like the Texas Intracoastal Waterway.
Key Features
- One-component, non-sag, 100% RTV neutral cure silicone sealant
- Extremely long service life for enduring protection
- Excellent flexibility accommodates dynamic joint movement
- Bonds to most substrates without priming
- Fungicide additive for superior mildew resistance
- Ready to use, eliminating mixing complexities
- All-season application capability
- Watertight seals against harsh marine elements
Specifications
| Product Specifications | |
|---|---|
| Type | One-component, non-sag, neutral cure silicone sealant |
| Container Size | 10oz tube with nozzle |
| Color | Clear |
| ASTM Compliance | C-920, Type S, Grade NS, Class 25, Use NT, T, M, G, A, O |
| TT-S Compliance | 00230C, Type II, Class A |
| TT-S-001543A Compliance | Class A |
| CAN/CGSB Compliance | 19.13-M87 |
| AAMA Compliance | 802.3 Type II, 803.3, 805.2, 808.3 |
| VOC Content | Meets California Air Resources Board 2003 requirements |
| Substrate Compatibility | Glass, aluminum, tile, fiberglass, plastic, ceramic, masonry, concrete, brick, wood |
| Application Temperature | All-season |
Who This Is For
Marine professionals and DIY enthusiasts requiring a durable, flexible, and weather-resistant sealant for a wide range of applications including window and door sealing, perimeter sealing, expansion joints, and general repairs on boats and RVs.
How It Compares
| Feature | Sika Sikasil-N Plus Clear Sealant for Marine Use | Boat Supply | Competitor |
|---|---|---|
| Type | 100% RTV Neutral Cure Silicone | One-part, moisture-curing polyurethane, 100% Silicone |
| Flexibility | Excellent flexibility for dynamic joint movement | Good, Excellent |
| Mildew Resistance | Fungicide additive for mildew resistance | Not specified, Not specified |
| ASTM C-920 Compliance | Type S, Grade NS, Class 25, Use NT, T, M, G, A, O | Not specified, Not specified |
| Primer Required | No | No, No |
Common Concerns Answered
Is this sealant difficult to apply neatly?
While it provides excellent adhesion and flexibility, careful application with a caulk gun is recommended to prevent mess. Surface preparation is key for optimal results.
How long does Sika Sikasil®-N Plus Clear take to cure?
Cure time can be longer than some other sealants, particularly in humid conditions, but its long-term performance and durability are highly regarded by users.
Why is the price slightly higher than generic sealants?
The price reflects its extensive certifications, including multiple ASTM standards, and its proven long-term performance and durability in demanding marine environments, justifying the investment for critical sealing applications.
Frequently Asked Questions
What is Sika Sikasil®-N Plus Clear used for in marine applications?
It is used for sealing windows and doors, perimeter sealing, expansion joints, and general repairs on boats, providing watertight and flexible seals.
Is Sika Sikasil®-N Plus Clear suitable for sealing windows and doors on a boat?
Yes, its excellent flexibility and weather resistance make it highly suitable for sealing boat windows and doors, ensuring a durable and watertight seal.
What surfaces does Sika Sikasil®-N Plus Clear bond to?
It bonds exceptionally well to glass, aluminum, tile, fiberglass, plastic, ceramic, masonry, concrete, brick, and wood without the need for primers.
Does Sika Sikasil®-N Plus Clear have mildew resistance?
Yes, it features a fungicide additive specifically for mildew resistance, which is crucial for maintaining seals in damp marine environments.
What are the ASTM specifications met by Sika Sikasil®-N Plus Clear?
It meets numerous ASTM specifications, including ASTM C-920, Type S, Grade NS, Class 25, Use NT, T, M, G, A, O.
