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Ottoseal S54 fire protection silicone white 310ml

Description

Ottoseal S54 Fire Protection Silicone is flame-retardant B1. Ottoseal S54 Fire Protection Silicone for sealing identical and different materials such as glass, stainless steel, aluminium and some plastics, even on difficult adhesion substrates such as asphalt, tar.

  • 1K silicone sealant based on an aminoxime system - MEKO-free
  • Flame-retardant
  • Very good weather, ageing and UV resistance

Areas of application of Fire Protection Silicone:

  • Connection joints on mastic asphalt screeds
  • Bonding EPDM and APTK profiles
  • Bonding joint tapes on polysulfide basis
  • Stress-compensating sealing of identical and different materials such as glass, stainless steel, aluminium and some plastics
  • Sealing joints on difficult adhesion substrates, such as asphalt, tar etc.

Substrates:

The bonding surfaces must be clean, free of grease, dry and sound so that the high-temperature adhesive adheres. The bonding surfaces must be cleaned and any contamination, such as release agents, preservatives, grease, oil, dust, water, old adhesives / sealants and other substances that impair adhesion, must be removed. Cleaning non-porous substrates: clean with OTTO Cleaner T (flash-off time approx. 1 minute) and a clean, lint-free cloth. Cleaning porous substrates: clean surfaces of loose particles mechanically, e.g. with a wire brush or a grinding disc

Application:

Application method: manual caulking gun, compressed-air gun or cordless gun
Application temperature:
+5°C to +40°C (ambient temperature)
+5ºC to +35ºC (bonding surface temperature)

Storage:

In unopened packaging, stored cool (+5ºC and +25ºC) and dry. Close opened containers tightly and use up quickly.

Colour:

grey, black, white

Supplied as:

310ml cartridge

Technical data

Material: Silicone
Version
Colour: white
Technical data
Product type: Fire protection silicone
Use
Merchandise group: Sealants
Application
Application temperature: +5 °C to +40 °C
What's included
Supplied as: 310 ml cartridge
Storage
Storage: In unopened packaging, stored cool (+5ºC and +25ºC) and dry

Data sheets

Manufacturer information

Manufacturer information pursuant to Art. 19 EU GPSR

Postal address Hermann Otto GmbH
Krankenhausstr. 14
83413 Fridolfing
Germany

Electronic address info@otto-chemie.de

All products by OTTO Chemie

Information as of: 2026-09-17

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For your project

These products go with it

Project: Seal fire protection joints

Joints and penetrations that must remain tight in case of fire: fill cavities with fire protection foam and close the surface with fire protection silicone. B1 means flame-retardant; for a classified fire stop the manufacturer's approval applies.

  1. Prepare the surface

  2. Apply

  3. Tools & accessories

  4. Finish & care

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