OTTOSEAL S 70 - Teaserbild


The premium natural stone silicone

1-component silicone sealant based on oxime, neutral cross-linking, MEKO-free
For indoor and outdoor application
  • Excellent workability
  • No migratory staining
  • Very long-lasting joint
  • Resistant to mould
Technical datasheet

Product details

The premium natural stone silicone OTTOSEAL® S 70 is perfect for all marble and natural stones indoors and outdoors and does not cause any marginal staining on natural stones. OTTOSEAL® S 70 is available in a large number of different colour shades. As a special feature here, matte colour tones and “structure” colours with a surface that is similar to stone are also available. The very good weathering, ageing and UV-resistance as well as the resistance to mould infestation ensure a durable and visually appealing overall look. Thanks to the ISEGA clearance certificate, OTTOSEAL® S 70 has been tested and approved for use in the food-related sector and is therefore perfect for these applications. Attention: To smooth, we recommend the special OTTO natural stone smoothing agent.

Fields of application

  • Sealing of expansion joints in the area of floors and walls areas
  • Sealing of expansion joints in the area of facades
  • Sealing expansion and connection joints in bathroom areas
  • Sealing of swimming pools and -baths as well as elastic jointing on the pool edges
  • For the external sealing of mirrors in connection with natural stone
  • For jointing on ceramic slabs and natural stone in exterior areas
  • For jointing on marble and all natural stones, e. g. sandstone, quartzite, granite, gneiss, porphyry etc. in interior and exterior areas
  • Sealing of lacquered and enamelled glass
  • Movement-compensating bonding of natural stone on metal, e. g. stairs on a metal construction


  • Compatible with natural stone according to ISO 16938-1 - Does not cause any migratory staining on natural stone
  • Available in matte colours - Harmonises perfectly with matte surfaces
  • Available in “structure” colours - Harmonises perfectly with surfaces that are similar to stones
  • Contains fungicides - Resistance to mould infestation
  • Does not cause corrosion on unprotected metal surfaces
  • Excellent weathering, ageing and UV-resistance

Standards and tests

  • Tested according to EN 15651 – Part 1: F EXT-INT 25 LM / F EXT-INT CC 20 LM
  • Tested according to EN 15651 – Part 3: XS 1
  • Tested according to EN 15651 – Part 4: PW EXT-INT 25 LM - applies only to the matt shades of OTTOSEAL® S 70 - all other shades comply with PW INT 12,5 E
  • Tested fire behaviour in accordance with EN 13501: class E
  • Tested according to ISO 16938-1 of SKZ Würzburg (Testing for migratory staining of sealants on natural stone)
  • Tested according to ASTM C 1248 by DL Laboratories, New York (Testing for migratory staining of sealants on natural stone)
  • Declaration of no objection – tested for use in food-related area (ISEGA Forschungs- und Untersuchungs-Gesellschaft mbH, Aschaffenburg, Germany)
  • EMICODE® EC 1 Plus - very low emission
  • Quality seal of the IVD (Industrial association for sealants, registered society), tested by the ift Rosenheim (Institute of window engineering, registered society)
  • French VOC-emission class A+
  • Declaration in "baubook" Austria
  • According to regulation (EG) no. 1907/2006 (REACH)
  • Suitable for applications according to IVD instruction sheet no. 1+3-1+3-2+9+14+23+25+27+30+31+35 (IVD = German industry association sealants)

Colours & form of delivery

Verarbeiter-Farbtafel OTTOSEAL S 70

Glossy colors

310 ml cartridge400 ml aluminium foil bag
adria blue
S70-04-C990 on request
S70-04-C67 S70-07-C67
anthracite grey
S70-04-C137 on request
S70-04-C10 S70-07-C10
concrete grey
S70-04-C56 S70-07-C56
S70-04-C05 on request
S70-04-C45 on request
thistle grey structure
S70-04-C111 on request
dark green
S70-04-C37 on request
stainless steel
S70-04-C197 on request
flash grey
S70-04-C787 on request
joint grey
S70-04-C71 on request
joint grey structure
S70-04-C110 on request
S70-04-C4720 on request
graphite black
S70-04-C1391 on request
grey blue structure
S70-04-C47 on request
grey red structure
S70-04-C41 on request
fair blue structure
S70-04-C44 on request
fair grey structure
S70-04-C109 on request
autumn grey
S70-04-C1108 on request
S70-04-C08 on request
labrador blue
S70-04-C1390 on request
light grey
S70-04-C38 on request
S70-04-C43 S70-07-C43
night grey
S70-04-C1109 on request
S70-04-C230 on request
S70-04-C84 on request
pearl grey
S70-04-C80 on request
red beige
S70-04-C82 on request
sand red structure
S70-04-C32 on request
sandstone beige
S70-04-C1110 on request
sanitary grey
S70-04-C18 S70-07-C18
S70-04-C04 on request
silver green structure
S70-04-C34 on request
S70-04-C26 on request
S70-04-C00 S70-07-C00
S70-04-C01 on request
Pieces per packaging unit 2020
Pieces per pallet 1200900

Matte colors

310 ml cartridge400 ml aluminium foil bag
matt anthracite
S70-04-C1300 on request
matt anthracite grey
S70-04-C6116 on request
matt bahamabeige
S70-04-C6115 on request
matt concrete grey
S70-04-C6113 on request
matt jasmin
S70-04-C6117 on request
matt manhattan
S70-04-C1282 on request
matt sanitary grey
S70-04-C6111 on request
matt black
S70-04-C6114 on request
matt white
S70-04-C6112 on request
Pieces per packaging unit 2020
Pieces per pallet 1200900

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.

Do you have questions about our OTTOSEAL® sealants?

Our application consultation is available Monday to Thursday from 7:00 a.m. to 4:00 p.m. and Friday from 7:00 a.m. to 1:00 p.m. and will be happy to receive your request.