Silicones, silicone oils, sprays
Casting and potting resins)
HS Code:
3214.1000
Technical Data
Typical values, not a specification. The technical data sheet (TDS) is binding.
Product Information
- Tensile Strength
- approx. 3.0 N/mm²
- Temperature range (°C)
- -40 °C to +90 °C
- Container
- 290ml cartridge
Performance at Full Cure
- Elongation at break
- approx. 170%
Physical Properties
- Density
- 1.52 g/cm³
- Hardness (Shore A)
- 58
- Chemical group
- Silane-modified polymer
- Color
- black, white, light grey
- Cured layer thickness after 24 hours
- ≥ 2.0 mm
- Curing technology
- Moisture curing
Features
- Processing temperature
- +5 °C to +40 °C
- Stress at 100% elongation
- approx. 2.6 N/mm²
- Volume change
- ≤ 3%
- Number of components
- 1K
Product Description
Merbenit RV55 is a flame-retardant 1K-SMP adhesive for rail vehicle construction — EN 45545-2 Hazard Level HL3 (highest level), approved for all operating classes 1–4 including tunnel vehicles.
Silane-modified polymers (SMP) are modern high-performance adhesives — moisture-curing, solvent-free, isocyanate-free, and silicone-free, with a very broad adhesion spectrum on metals, painted and galvanized surfaces, engineering plastics, glass, ceramics, concrete, stone, and wood. Paint-compatible, corrosion-protective, shock- and vibration-resistant, low-odor. RV55 is a specific variant of the Merbenit SMP series — the key properties and applications are listed below.
Merbenit RV55 meets the highest hazard level HL3 according to EN 45545-2 (requirement sets R22+R23) — approved for all operating classes 1 to 4, including tunnel vehicles without evacuation possibility. High strength (Shore A 58), resistant to +200 °C for short periods, halogen-free, and very low emission.
What sets RV55 apart
What is RV55 used for?
Processing
Recommended accessories
RV55 in comparison with related Merbenit products
Direct comparison of mechanical and processing values — all data from the official Merbenit TDS.
RV55 Current Product |
RV30 → | HS60 → | MB55 → | |
|---|---|---|---|---|
| Crosslinking system | 1K moisture-curing | 1K moisture-curing | 1K moisture-curing | 1K moisture-curing |
| Consistency | see TDS | see TDS | non-sag | non-sag |
| Shore A hardness | A 58 | A 26 | A 60 | A 55 |
| Tensile Strength | 3.0 N/mm² | 1.5 N/mm² | 3.3 N/mm² | 3.1 N/mm² |
| Elongation at break | 170 % | 225 % | 250 % | 300 % |
| Modulus 100% | 2.6 N/mm² | 0.9 N/mm² | 2.3 N/mm² | 1.8 N/mm² |
| Processing time | 30 min | 15 min | 10 min | 10 min |
| Through-curing 24 h | ≥2.0 mm | 2.0 mm | ≥2.0 mm | ≥2.0 mm |
| Through-cure 48 h | ≥3.5 mm | 3.0 mm | ≥3.0 mm | ≥4.0 mm |
| Density | 1.52 | 1.47 | 1.54 | 1.53 |
| Temperature range | –40 / +90 °C | –40 / +90 °C | –40 / +90 °C | –40 / +90 °C |
| Volume change | ≤3 % | ≤3 % | ≤8 % | ≤6 % |
| Main application | Rail vehicle interior bonding HL3 | Rail vehicle exterior seals | Food industry | Shipbuilding |
Frequently asked questions about RV55
Practical application and design questions — answered by SILITECH.
Merbenit RV55: Flame-retardant 1K-SMP adhesive for rail vehicle construction — EN 45545-2 Hazard Level HL3 (highest level), approved for all operating classes 1–4 incl. tunnel vehicles. Main applications: interior bonding for rail vehicles HL3, exterior bonding for rail vehicles HL3, tunnel vehicles.
SMP = Silane-modified polymer. This modern adhesive class combines the advantages of silicone (elasticity, weather resistance, broad adhesion spectrum) and polyurethane (mechanical strength, paint compatibility) — without their disadvantages (silicone: not paintable, corrosion on some metals; PU: isocyanates, often problematic indoors). SMP adhesives are solvent-free, isocyanate-free, and silicone-free, paint-compatible, corrosion-protective, and adhere without primer to most substrates — except PE, PP, PTFE, and silicones.
RV55 adheres to metals (aluminum, stainless steel, steel), powder-coated and painted surfaces, galvanized/anodized/chromated/zinc-coated substrates, many plastics, ceramics, stone, concrete, render, wood, and glass. Not suitable for: PP, PE, PTFE (Teflon), silicones, and bituminous substrates. For critical material pairings, we recommend a preliminary test or the use of a primer (V40 for smooth, V21 for absorbent substrates).
Store in unopened original container in a dry, cool place — typically between +5 and +30 °C. Consult the safety data sheet (SDS) before use. Observe the expiry date on the packaging. Process opened cartridges promptly — skin formation in the nozzle will block further application.
In the comparison table above, you will find related Merbenit products with different properties — different hardness, pot life, elongation at break, or special certifications (IMO, EN 45545-2, FMVSS 212, ISEGA, Minergie-ECO). If you are unsure about the optimal choice, we will be happy to advise you — contact SILITECH with your specific application (substrate pairing, desired hardness, processing workflow, certification requirement).