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Merbenit RV55

Merbenit RV55

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Merbenit RV55 is an elastic, sealing adhesive with high strength.

Flame-retardant 1K-SMP adhesive for railway vehicle construction — EN 45545-2 Hazard Level HL3 (highest level), approved for all operating classes 1–4 including tunnel vehicles

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  • Tensile strength
  • Temperature range (°C)
  • Container
  • Elongation at break
  • density
  • Hardness (Shore A)
  • Chemical group
  • Color
  • Cured layer thickness after 24 hours
  • curing technique
  • Processing temperature
  • Tension at 100% elongation
  • Change in volume
  • Number of components

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MS Polymer Universal Automatic Dispensing General Industry and Manufacturing Construction Metal Plastic Low Odor Solvent-Free Silicone- Free Isocyanate-Free Automotive Elastic Merbenit Accessories Spray Guns Sealant Mechanical Engineering

 
General Terms and Conditions.

Shipping usually within 1 to 3 business days
(availability will be confirmed after ordering)

. Express logistics. Fast and reliable within Switzerland & Europe.

Shipping from Swiss warehouse within 24 hours. Batch certificate. Invoice within 30 days (B2B). Technical support.
Shipping & Delivery

Usually 1 to 3 working days

Availability will be confirmed after order receipt.

Express logistics within Switzerland & Europe.

General Terms and Conditions →

Product data

HS code: 3214.1000

HS code: 3214.1000

Merbenit RV55
Merbenit RV55
Merbenite ·

Merbenit RV55 is a flame-retardant 1K-SMP adhesive for railway vehicle construction — EN 45545-2 Hazard Level HL3 (highest level), approved for all operating classes 1–4 including tunnel vehicles.

Silane-modified polymers (SMPs) are modern, high-performance adhesives—moisture-curing, solvent-, isocyanate-, and silicone-free, with a very broad adhesion spectrum to metals, painted and galvanized surfaces, engineering plastics, glass, ceramics, concrete, stone, and wood. They are paintable, corrosion-resistant, shock- and vibration-resistant, and low-odor. RV55 is a specific variant of the Merbenit SMP series—its key properties and applications are described below.

EN 45545-2 HL3 — highest hazard level

Merbenit RV55 meets the highest hazard level HL3 according to EN 45545-2 (requirements R22+R23) — approved for all operating classes 1 to 4, including tunnel vehicles without evacuation options. High strength (Shore A 58), resistant to short-term temperatures up to +200 °C, halogen-free and very low-emission.

RV55 in numbers
EN 45545-2
HL3
Shore A 58
high strength
170 %
Elongation at break
Grades 1–4
tunnel

What makes RV55 stand out

EN 45545-2 HL3 — highest level
R22+R23 — Oxygen index, smoke density, toxicity at the highest level.
All operating classes 1–4 are permitted
Even tunnel vehicles without evacuation options.
High Strength (Shore A 58)
Structural bonding with high mechanical strength.
Powder/thermal coating +200 °C
Resistant to high temperatures for short periods.
Free from solvents, isocyanates, silicones, phthalates and tin
Safe in processing and at the workplace.
Label-free
No GHS labeling.

What is RV55 used for?

Rail vehicle interior adhesives HL3
Highest fire protection requirements in the train interior.
Rail vehicle external adhesives HL3
Structural bonding with the highest fire protection rating.
Tunnel vehicles
High-stress fire protection applications in tunnel vehicles.
Sandwich components in railway
Structural sandwich component bonding.
Highly stressed railway components
Doors, glazing, ceilings, wall components.
Railway maintenance
Repair with the highest fire safety compliance.
Data sheets & safety data sheet
TDS and SDS in multiple languages ​​— watch or download directly.
To the documents →

processing

1
clean substrate
Degrease and dry track substrates — aluminum, painted steel, composites or plastics.
2
Apply primer
EN-45545-2 compliant bonding always requires primer V40 (smooth) or V21 (absorbent) for reproducible values.
3
Insert cartridge
Standard cartridge gun or bag system for large-area web bonding.
4
Apply
Uniform bead or sandwich component bonding — pot life 15–30 min.
5
Add + Fix
Attach with defined contact force — fix rail vehicle components until initial crosslinking.
6
Curing + fire protection testing
48 h full crosslinking. EN 45545-2 HL1/HL2/HL3 conformity achieved after full crosslinking.

Recommended accessories

Merbenit RV30
Railway vehicle sealant EN 45545-2 HL1+HL2 — flame retardant, halogen-free.
View product →
Merbenit HS60
High-modulus 1K-SMP (Shore A 60) with ISEGA + RLT VDI 6022 — highest strength in the series.
View product →
Merbenit PC200
High-temperature 1K-SMP — resistant to +240 °C for short periods, ideal for powder coating pre-assembly bonding.
View product →

RV55 compared to related Merbenit products

Direct comparison of mechanical and processing values ​​— all data from the official Merbenit TDS.

RV55
Current product		 RV30 →HS60 →MB55 →
Networking system1K moisture-curing1K moisture-curing1K moisture-curing1K moisture-curing
consistencysee TDSsee TDSstablestable
Shore A hardnessA 58A 26A 60A 55
Tensile strength3.0 N/mm²1.5 N/mm²3.3 N/mm²3.1 N/mm²
Elongation at break170 %225 %250 %300 %
Module 100%2.6 N/mm²0.9 N/mm²2.3 N/mm²1.8 N/mm²
Processing time30 min15 min10 min10 min
Curing time: 24 hours≥2.0 mm2.0 mm≥2.0 mm≥2.0 mm
Curing time: 48 hours≥3.5 mm3.0 mm≥3.0 mm≥4.0 mm
density1.521.471.541.53
Temperature range-40 / +90 °C-40 / +90 °C-40 / +90 °C-40 / +90 °C
Change in volume≤3 %≤3 %≤8 %≤6 %
Main applicationRail vehicle interior adhesives HL3Rail vehicle external sealsFood industryShipbuilding
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
MS Polymer Universal Automatic Dispensing General Industry and Manufacturing Construction Metal Plastic Low Odor Solvent-Free Silicone- Free Isocyanate-Free Automotive Elastic Merbenit Accessories Spray Guns Sealant Mechanical Engineering

Technical data for Merbenit RV55

All 14 product information 3 Performance at final strength 1 Physical properties 6 General 4
Product information
Tensile strength approx. 3.0 N/mm²
Temperature range (°C) -40 °C to +90 °C
Container 290ml cartridge
Performance at final strength
Elongation at break approximately 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 technique Moisture-curing
Generally
Processing temperature +5 °C to +40 °C
Tension at 100% elongation approx. 2.6 N/mm²
Change in volume ≤ 3%
Number of components 1K

For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.

No public documents are available.
We will gladly send you the TDS and SDS by email upon request; please submit a request.

Frequently asked questions about RV55

Practical application and design questions — answered by SILITECH.

Merbenit RV55: Flame-retardant 1K SMP adhesive for railway vehicle construction — EN 45545-2 Hazard Level HL3 (highest level), approved for all operating classes 1–4 including tunnel vehicles. Main applications: Railway vehicle internal bonding HL3, railway vehicle external bonding HL3, tunnel vehicles.

SMP = Silane-modified polymer. This modern class of adhesives combines the advantages of silicone (elasticity, weather resistance, broad adhesion spectrum) and polyurethane (mechanical strength, paintability) — without their disadvantages (silicone: not paintable, corrosion on some metals; PU: isocyanates, often problematic indoors). SMP adhesives are solvent-, isocyanate-, and silicone-free, paintable, corrosion-resistant, and adhere to most substrates without a primer — 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, crepi, wood, and glass. Not suitable for: PP, PE, PTFE (Teflon), silicones, and bitumen substrates. For critical material pairings, we recommend a preliminary test or application with a primer (V40 for smooth, V21 for absorbent substrates).

Store in the 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. Use opened cartridges quickly — 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 which product is best for you, we would be happy to advise you—contact SILITECH with your specific application (substrate pairing, desired hardness, processing workflow, certification requirements).

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Product specifications

Product information
Tensile strength approx. 3.0 N/mm²
Temperature range (°C) -40 °C to +90 °C
Container 290ml cartridge
Performance at final strength
Elongation at break approximately 170%
Physical properties
Color black or white or light grey
density 1.52 g/cm³
Hardness (Shore A) 58
Chemical group Silane-modified polymer
Cured layer thickness after 24 hours ≥ 2.0 mm
curing technique Moisture-curing
Uncategorized
Processing temperature +5 °C to +40 °C
Tension at 100% elongation approx. 2.6 N/mm²
Change in volume ≤ 3%
Number of components 1K
Keywords
Keywords
MS Polymer Universal Automatic Dispensing General Industry and Manufacturing Construction Metal Plastic Low Odor Solvent-Free Silicone- Free Isocyanate-Free Automotive Elastic Merbenit Accessories Spray Guns Sealant Mechanical Engineering