SIKAFIRESIL MARINE N

What Sika Firesil-N Marine is and why choose it

Sika Firesil-N Marine is a one-component, alkoxy-cure silicone sealant with low flame spread characteristics, designed for applications where high fire resistance and low smoke emission are required. Based on a non-corrosive curing system, it cures with atmospheric moisture to form a soft, elastic seal that maintains performance even when exposed directly to nearby heat sources. The product meets flammability and smoke emission requirements such as 49CFR238, NFPA 130, DIN 4102 B1 and IMO regulations, making it suitable for demanding marine and transportation environments.

Main features

• Alkoxy-cure 1-C silicone: moisture-curing, non-corrosive system.
• Fire retardant formulation: provides excellent resistance to fire and low flame spread.
• High elasticity: soft, elastic seal with a movement accommodation factor of ±25% (ISO 11600).
• Good non-sag properties: suitable for vertical and overhead joints.
• Weathering resistance: resists aging and weathering, UV radiation, fresh water and seawater.
• Broad substrate compatibility: designed to bond well to a wide variety of substrates.
• Light grey colour: neutral appearance for technical and architectural applications.
• One-part, ready-to-use cartridge: simplifies application on site.

Technical specifications

• Chemical base: 1-C silicone
• Cure mechanism: moisture
• Cure type: alkoxy
• Colour: light grey
• Density (uncured): approx. 12 lb/gal
• Non-sag properties: good
• Application temperature (product): 41–95 °F (5–35 °C)
• Tack-free time (23 °C / 50% r.h.): approx. 25 minutes
• Shrinkage: 3%
• Shore A hardness: 25
• Tensile strength (ASTM D 412): 85 psi
• Elongation at break (ASTM D 412): 300%
• Movement accommodation factor (ISO 11600): ±25%
• Service temperature, permanent: up to 320 °F (160 °C)
• Service temperature, short term (4 h): up to 392 °F (200 °C)
• Cure mechanism details: curing speed depends on temperature and relative humidity; at lower temperatures, curing proceeds more slowly.
• Chemical resistance: resistant to UV, fresh water and seawater; temporarily resistant to fuels, mineral oils and vegetable/animal fats and oils; not resistant to organic acids, concentrated mineral acids, caustic solutions and solvents.
• Shelf life: 12 months (storage below 80 °F / 27 °C in tightly closed container, dry conditions)
• Packaging: cartridge 10.3 fl oz (304 ml)
• Standards / approvals (flammability and smoke): 49CFR238, NFPA 130, DIN 4102 B1, IMO 653(16)
• Quality assurance: manufactured under ISO 9001/14001 quality system.

Applications and use cases

Sika Firesil-N Marine is a general-purpose fire-retardant silicone sealant for professional use where enhanced fire performance and smoke control are required.

Typical applications

• Sealing gaps and joints in areas requiring compliance with 49CFR238 and NFPA 130 flammability and smoke emission requirements.
• Applications requiring classification according to DIN 4102 B1.
• Marine and offshore sealing tasks where compliance with IMO 653(16) is specified.
• Sealing of gaps, cable ducts and grommets in technical installations.

This product is intended for experienced professional users. Tests with actual substrates and site conditions must be carried out to confirm adhesion and material compatibility.

FAQ

1. What type of sealant is Sika Firesil-N Marine?

   It is a one-component, alkoxy-cure, fire-retardant silicone sealant based on a non-corrosive moisture-curing system.

2. Where can Sika Firesil-N Marine be used?

   It is used as a general-purpose sealant in applications requiring fire resistance and low smoke emission, such as joints, gaps, cable ducts and grommets in areas subject to 49CFR238, NFPA 130, DIN 4102 B1 and IMO 653(16).

3. What is the service temperature range?

   The permanent service temperature is up to 320 °F (160 °C), with short-term resistance up to 392 °F (200 °C) for 4 hours.

4. How fast does it cure?

   At 73 °F (23 °C) and 50% relative humidity, the tack-free time is about 25 minutes. Full cure speed depends on joint thickness, temperature and humidity.

5. Can Sika Firesil-N Marine be painted?

   No. According to the product data, Sika Firesil-N cannot be overpainted.

6. Is the product resistant to water and chemicals?

   Yes, it is resistant to UV radiation, fresh water and seawater, and temporarily resistant to fuels, mineral oils and vegetable or animal fats and oils. It is not resistant to organic acids, concentrated mineral acids, caustic solutions or solvents.

7. What substrate preparation is required?

   Surfaces must be clean, dry and free from oil, grease, dust, rust and other contaminants. Nonporous substrates should be solvent-cleaned with a lint-free cotton cloth and wiped dry before the solvent evaporates.

8. Is Sika Firesil-N Marine suitable for DIY users?

   No. The product is intended for experienced professional users only, who must test actual substrates and conditions to ensure adhesion and compatibility.

9. How is uncured material removed?

   Uncured sealant can be removed from tools and equipment with suitable solvents such as isopropyl alcohol or acetone. Once cured, it can only be removed mechanically.

10. What is the available packaging size?

    The product is supplied in 10.3 fl oz (304 ml) cartridges.

14. Transport information

The product data sheet specifies that further information and advice regarding transportation, handling, storage and disposal of the product should be taken from the applicable safety documentation. It must be kept away from heat, sparks, flame, electrical equipment and other ignition sources, and used only in well-ventilated areas. Spilled product may pose a slipping hazard and should be collected and disposed of according to applicable environmental regulations.

8. Individual protection measures

The following individual protection measures are indicated in the product documentation for handling Sika Firesil-N Marine:

• General handling: Use only in well-ventilated areas. Open doors and windows during use. Do not smoke. Avoid contact with skin and eyes.
• Eye protection: Wear chemical-resistant goggles to prevent eye contact. Remove contact lenses before using the product and do not handle lenses until all product has been fully cleaned from fingers, nails and cuticles, as residual material can transfer to lenses and cause severe eye irritation.
• Skin and body protection: Wear chemical-resistant protective clothing to prevent direct contact with skin, including suitable gloves and protective garments. Remove contaminated clothing after use. Cured product can be handled without health risk.
• Hand protection: Use chemical-resistant gloves to avoid skin contact. The product can cause eye/skin/respiratory irritation and may act as a possible sensitizer.
• Respiratory protection: When ventilation is inadequate, use a properly fitted NIOSH-approved respirator. Vapors from uncured product can release methanol and may cause narcotic effects at high concentrations.
• Fire and explosion precautions: Keep away from heat, flame, sparks, electrical equipment and other ignition sources. Take measures against electrostatic charging. Do not smoke during handling or cleanup.

*Contenido generado por IA