Loctite 518 Flange Sealant

About the Loctite 518 Flange Sealant

The Loctite 518 Flange Sealant from Loctite is a proven solution for flange sealing applications across the manufacturing sector. Semi-flexible anaerobic flange sealant for rigid metal flanges. Fills gaps up to 0.25mm and resists oils, fuels, and other fluids.

Engineered to Anaerobic type, Up to 0.25mm gap fill, -55°C to +150°C temperature, this unit is built for demanding industrial duty cycles.

Tunnel Fox sources the Loctite Loctite 518 Flange Sealant directly from authorised distribution channels, so every unit ships with original-equipment-manufacturer (OEM) traceability — critical for plants running ISO-certified maintenance programmes or warranty-backed asset registers.

Loctite has a long-standing reputation for delivering reliable flange sealing components, and the Loctite 518 Flange Sealant fits naturally into greenfield builds, brownfield retrofits, and routine replacement cycles. Whether you need a single replacement unit for an emergency shutdown or a bulk order for a scheduled maintenance window, our procurement team will confirm availability, lead time, and landed cost in writing — usually within one business day.

For South African industrial operators, getting the right flange sealing component on site quickly often makes the difference between a contained downtime event and a full production outage. We hold quote-ready relationships with global Loctite distribution partners and can ship to mine sites, processing plants, ports, and workshop addresses anywhere in the country.