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Ottoseal S72 plastic silicone transparent 310ml – case of 20

Description

The case of 20 is the manufacturer’s original case containing 20 units of the same type. You pay less per unit than when buying singly, and the sealed case is delivered – ideal for trade businesses and larger projects.

Ottoseal S72 Plexiglass silicone and plastics silicone adheres to almost all plastics even without primer, and to twin-wall sheets. Ottoseal S721K silicone adhesive causes no stress cracking on non-prestressed Plexiglas. Ottoseal S72 Plexiglass silicone & plastics silicone has been tested for compatibility in contact with foodstuffs.Ottoseal S72 is an indispensable Plexiglas silicone and plastics silicone for bonding and sealing in greenhouse, plastics and conservatory construction, even under weathering, ageing and UV exposure.

  • Neutral-curing 1K silicone adhesive based on alkoxy
  • Adheres without primer to many plastics (except PE, PP and PTFE and similar plastics with low surface tension)
  • Very good adhesion on twin-wall sheets
  • Causes no stress cracking on non-prestressed acrylic glass (Plexiglas®) and polycarbonate (Makrolon®, Lexan®)
  • Low odour
  • High notch and tear resistance
  • Non-corrosive
  • Very good weather, ageing and UV resistance

Standards and tests:

  • Causes no stress cracking on non-prestressed Plexiglas (tested by Röhm GmbH, Darmstadt)
  • The compatibility of OTTOSEAL S72 with stress-free Plexiglas has been tested and confirmed by the manufacturer. A test report from Degussa AG on compatibility with Plexiglas XT is available
  • Tested for food compatibility by Chemisches Laboratorium Dr. Stegemann, Georgsmarienhütte

Areas of application:

  • Bonding and sealing in plastics, greenhouse and conservatory construction, even under weathering, ageing and UV exposure

Application:

Application temperature: +5ºC to +35ºC.
Application method: apply with a manual caulking gun, compressed-air gun or cordless gun.
Cleaning: with white spirit before curing, afterwards removable with silicone remover or mechanically.
Smoothing: with smoothing agent and scraper before a skin forms.

Pre-treatment:

The bonding surfaces must be clean, free of grease, dry and sound. 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 steel brush or a grinding disc. Clean sensitive plastics with methylated spirits or with a cleaner recommended by the plastics manufacturer.

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.

The specific use-by date is shown on the container print and must be observed. We recommend storing Otto Chemie adhesives and sealants in unopened original containers in dry conditions (< 60 % RH) at a temperature 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.

Supplied as:

310 ml cartridge (20 cartridges per carton)

Colour:

transparent, RAL 9010 pure white, RAL 7004 signal grey

Technical data

Material: Silicone
Version
Colour: transparent
Use
Merchandise group: Sealants
What's included
Supplied as: 310 ml cartridge
Product group: Speciality silicone

Data sheets

Data sheets and documents

All documents come unchanged from the manufacturer.

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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