OTTOSEAL® S 28 - The aquarium and glass block silicone. Characteristics: • 1-component acetate-curing silicone sealant • Excellent weathering, ageing and UV- resistance • Offers the highest possible safety standard for highly sensitive life forms • High adhesive power. Fields of application: • Manufacturing of frameless aquaria and terraria entirely made of glass according to DIN 32622 • Bonding and sealing of glass blocks. Standards and tests: • According to DIN 32622, pt. 126.96.36.199 (Glass Aquaria) • Non-toxic for fish according to OECD 203 (Acute Toxicity Test – tested by the Institute Fresenius, 65232 Taunusstein, Germany).