OTTOSEAL® S 70 Natural Stone Silicone | For marble & natural stone

What is OTTOSEAL® S 70?

OTTOSEAL® S 70 is a high-quality natural stone silicone for permanently elastic joints in marble and natural stone. The silicone is specially formulated not to cause edge zone staining and is suitable for indoor and outdoor areas.

OTTOSEAL® S 70 is supplied in a 300 ml cartridge and is available in numerous color shades – including matte colors as well as special textured colors with a stone-like surface.

Areas of application

• Joints in marble and natural stones (e.g., granite, gneiss, quartzite, sandstone)
• Expansion and connection joints in floor and wall areas
• Sanitary joints in conjunction with natural stone
• Facade and outdoor areas
• Swimming pools and pool edges
• Mirror sealing in conjunction with natural stone

Properties & Advantages

• Natural stone compatible – no edge zone staining (ISO 16938-1)
• Mold resistant due to fungicidal properties
• UV, weather, and aging resistant
• Available in matte and textured colors
• Non-corrosive to unprotected metals
• Tested for food-related areas (ISEGA)

Technical Key Figures (Excerpt)

• Container: 300 ml cartridge
• Skin formation time: approx. 10–15 minutes
• Curing: approx. 2–3 mm / 24 hours
• Application area: Indoor & Outdoor

Note on processing

For smoothing natural stone joints, we recommend using a special marble silicone smoothing agent to avoid surface changes.

Distinction from other silicones

For classic sanitary joints without natural stone, we recommend OTTOSEAL® S 100 Sanitary Silicone .

Further products can be found in our natural stone silicone category .

Frequently asked questions about OTTOSEAL® S 70

Is OTTOSEAL® S 70 food-safe?

Yes, OTTOSEAL® S 70 has been tested for food-related areas by an ISEGA declaration of no objection.

Is OTTOSEAL® S 70 also available as a savings pack?

Yes, OTTOSEAL® S 70 is also available as a 20-pack savings pack for larger projects and professional use.

Brand note:
OTTOSEAL® S 70 is a brand product of Hermann Otto GmbH. Sales are conducted by Bauwolke24 as an independent reseller.