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Ottoseal S94 fire-rated silicone B1 310 ml

Description

Ottoseal S94 heat-resistant sealing compound for sealing on components that are subject to increased requirements for fire behaviour (e.g. fire-retardant components and fire-resistant glazing)

  • Flame-retardant to DIN 4102-B1
  • Paint-compatible to DIN 52452 (not paintable over)
  • Non-corrosive
  • Very good weather, ageing and UV resistance
  • Tensile stress at 100% elongation (ISO 37, S3A): 0.4 N/mm²

Areas of application of heat-resistant sealing compound:

  • Sealing on components that are subject to increased requirements for fire behaviour (e.g. fire-retardant components and fire-resistant glazing)
  • Suitable for jointing on glass elements

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)
The heat-resistant sealing compound must be completely cured before it is exposed to temperatures above + 50 °C. The high-temperature silicone is not a fire-protection silicone. For this we recommend OTTOSEAL S 94. Because of the many possible influences during processing and application, the applicator must always carry out a trial application. The specific use-by date can be found printed on the container and must be observed. We recommend storing our products in the unopened original containers dry (< 60 % RH) in a temperature range of + 15° C to + 25° C. If the products are stored and / or transported for longer periods (several weeks) at higher temperature/ humidity, a reduction in shelf life or a change in material properties cannot be ruled out.

Standards and tests:

  • Tested to EN 15651 - Part 1: F EXT-INT CC 25 LM
  • Tested to EN 15651 - Part 2: G CC 25 LM
  • Tested to EN 15651 - Part 4: PW INT 12.5 E
  • Tested to DIN 4102-B1 – flame-retardant between solid mineral building materials (TU Munich wood research)
  • Tested to DIN 25415, Part 1 - very good decontaminability of the sealant surface (Federal Institute for Materials Research and Testing, Berlin)
  • Suitable for applications according to IVD Technical Data Sheet No. 9+11+20+24+27+29+31+35
  • Quality seal of the IVD - Industry Association of Sealants - tested by ift - Institute for Window Technology, Rosenheim
  • Compliant with Regulation (EC) No 1907/2006 (REACH)
  • LEED® v3 compliant Credit IEQ 4.1: adhesives and sealants
  • DGNB classifications
  • French VOC emission class A+

Storage:

12 months from the date of production in unopened packaging, stored cool (+5ºC and +25ºC) and dry. Close opened containers tightly and use up quickly.

Colour:

grey, black, transparent, white

Supplied as:

310ml cartridge

Technical data

Material: Silicone
Version
Colour: transparent
Technical data
Product group: High-temperature & fire protection silicone
Standards
Standard: DIN 4102
Use
Merchandise group: Sealants
Application
Application temperature: +5 °C to +40 °C
What's included
Supplied as: 310 ml cartridge
Storage
Storage: 12 months from the production date 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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