SeaRox® SL 620
Delivering highest fire safety and acoustic comfort, SeaRox SL 620 is a thin, versatile insulation slab for marine and offshore steel and aluminium constructions. It simplifies stock, meets the latest certificates, and ensures long-term performance.
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Industry and product areas
- Marine & Offshore
- Fire protection
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About SeaRox® SL 620
SeaRox SL 620 is a high-performance stone wool insulation semi-rigid board for A-rated steel and aluminium bulkheads and decks in marine and offshore environments. It ensures top fire safety according to IMO 2010 FTP Code and excellent acoustic performance. Limited stock is required to achieve the coverage you need, Having a thin slab with the best fire safety contributes to a safe environment onboard ships and platforms. You can customise your product as reinforced aluminium foil or glass cloth facings are available on request.
- Resists water absorption to deliver long-term durability
- Tailored for fire-rated constructions
- Excellent acoustic performance for noise control
- Uniform appearance – easy to handle and cut-to-size on site
Application
SeaRox SL 620 is used for A-rated steel and aluminium bulkhead and deck constructions in ships and offshore platforms, delivering top fire safety, acoustic and thermal insulation where the highest standards are required.
Available dimensions
Facing information
Why SeaRox?
SeaRox® marine insulation - Fire safe and thermally efficient
SeaRox® insulation is engineered for the demanding needs of shipbuilding and offshore industries. Its high-quality stone wool provides superior fire protection, excellent acoustic and thermal performance, and long-term durability — all designed to keep people and assets safer at sea.
Tailored solutions — lightweight to standard
Whether you need lightweight or standard solutions, SeaRox® offers tailored products for every application and is delivered to the same exacting standards worldwide. The result: reliable performance that helps create safer, more comfortable onboard and offshore environments.
Product properties
Our products are designed with your specifications in mind:
| Name | Unit | Test standard | Value |
|---|---|---|---|
| Nominal density | kg/m3 | EN 1602 | 100 |
| Water absorption | kg/m² | EN 1609 | ≤ 1 |
| Sound absorption (directly mounted) | ISO 354 | t=40mm unfaced: αw = 0,80 t=60mm unfaced: αw = 0,90 | |
| Reaction to fire | IMO 2010 FTPC | Non-combustible Low flame-spread properties Approved for A-class constructions |
Downloads
Our goal is to help you quickly find the documentation you need. If you’re unable to locate specific information, please reach out - we’re here to support you.

SeaRox SL 620
Download product datasheet

SeaRox® marine and offshore manual
This is a comprehensive technical guide to our SeaRox stone wool insulation.

SeaRox facings brochure
Improve the performance and safety of your SeaRox insulation with specialist pre-applied facings
Online tools
We provide a wide range of free tools to support your work - from online calculators for energy and heat‑loss assessments to a comprehensive online pricing tool Rockprice. Whether you are just starting your project or require technical guidance along the way, we are here to assist you at every stage.
Looking for answers?
If you have technical questions about products or need support for your projects, our technical experts are here to help you.








