OTTOSEAL S 121 - Teaserbild


The low odour bathroom silicone

1-component silicone sealant based on alkoxy, neutral cross-linking
For indoor and outdoor application
  • Low odour
  • Long-lasting joint
  • Resistant to mould
Technical datasheet

Product details

The special alkoxy-based bathroom silicone OTTOSEAL® S 121 is perfect for all long-lasting expansion and connection joints in the bathroom area and is also characterised by a special feature:  It is almost odourless when being applied and when curing. This means it is very pleasant to work with. So OTTOSEAL® S 121 is always the first choice when bathroom joints need to be made indoors in bathrooms with poor ventilation.

Fields of application

  • Expansion joints in connection joints in the floor and wall area
  • Expansion joints in bathroom areas
  • For the external sealing of mirrors in connection with materials such as ceramic, metal, glass etc.


  • Contains fungicides
  • Resistance to mould infestation
  • Low odour
  • Convenient processing
  • Excellent processing characteristics
  • Very good surface smoothness
  • Excellent weathering, ageing and UV-resistance
  • For long-lasting indoor and outdoor applications

Standards and tests

  • Tested according to EN 15651 – Part 3: XS 1
  • Tested according to EN 15651 – Part 4: PW INT 12.5 E
  • Suitable for applications according to IVD instruction sheet no. 3-1+3-2+14+31+35 (IVD = German industry association sealants)
  • Quality seal of the IVD (Industrial association for sealants, registered society), tested by the ift Rosenheim (Institute of window engineering, registered society)
  • According to regulation (EG) no. 1907/2006 (REACH)
  • French VOC-emission class A+
  • EMICODE® EC 1 Plus - very low emission
  • Classification according to building certification systems, see the sustainability data sheet
  • Tested fire behaviour in accordance with EN 13501: class E

Colours & form of delivery

Farbtafel OTTOSEAL S 121
310 ml cartridge 400 ml aluminium foil bag
S121-04-C67 on request
fair jasmin
S121-04-C112 on request
S121-04-C02 on request
S121-04-C71 on request
S121-04-C43 on request
S121-04-C94 on request
S121-04-C116 on request
S121-04-C00 on request
S121-04-C284 on request
S121-04-C01 on request
Units per packaging unit 20 20
Pieces per pallet 1200 900

Due to typographical reasons the colours shown below may differ from the original colours of the products. For an exact colour display please request our original colour charts.

Products, packaging Units and/or colours bearing order codes are available ex warehouse in standard commercial quantities.

Consumption calculator

Please note: This values are approximate and serve as a rough guide for rightangled joints. The depth of the joints is measured to the rear of the profile. Depending on the processing method, additional expenditure of up to 25% is possible.

More information

Do you have questions about our OTTOSEAL® sealants?

Our application consultation is available Monday to Thursday from 8:00 a.m. to 4:00 p.m. and Friday from 8:00 a.m. to 2:00 p.m. and will be happy to receive your request.

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