Loxeal Silicone 59-20 310 ml grey, neutral silicone flange sealant for gearboxes, pumps, engines and tanks

LOXEAL SILICONE 59-20 310 ml grey is a single-component, neutral cure silicone sealant which polymerises on contact with air humidity. It forms elastic joints that replace traditional gaskets made of rubber, gasket paper, cork or paper and is intended for flange connections. It shows excellent adhesion to metals, glass, many plastics and ceramics and is resistant to gases, water, oils and numerous chemicals.

Benefits and unique features

• Neutral (non-acid) silicone – safe for most metals and sensitive substrates.
• Elastic joint effectively replaces conventional cut gaskets.
• High adhesion to steel, aluminium, glass, many plastics and ceramics.
• Resistant to gas, air, water, oils and selected acids and alkalis.
• Wide service temperature range from -55 °C to +180 °C, short-term up to +200 °C.
• Maintains tightness under shock, vibration and temperature changes.
• After curing, the seal is removable – the flange joint can be dismantled with standard tools.
• Grey colour – neat, unobtrusive appearance of joints in machinery and industrial installations.

Properties and applications

• Flange sealing: gearbox housings, pumps, engines, tanks containing water and oil, and forced-air ducting.
• Gasket replacement: used instead of gaskets made of rubber, gasket paper, cork or paper in production and maintenance.
• Mechanical resistance: the elastic seal compensates vibration, shock and thermal expansion of components.
• Chemical resistance: very good resistance to water, oils, inorganic and organic acids and alkaline solutions.
• Dielectric properties: good insulating parameters allow use in electrical applications according to the manufacturer’s recommendations.
• Curing behaviour: forms a skin in about 30–50 minutes, reaches functional strength after several hours and fully cures within 24–36 hours.

Technical data

Storage recommendations

Store LOXEAL 59-20 in the original, tightly closed cartridge in a dry, cool place away from heat sources and direct sunlight. Avoid prolonged overheating of the product. Keep out of the reach of children and away from food and beverages.

FAQ

What is LOXEAL SILICONE 59-20 grey used for?
It is a neutral silicone sealant for sealing flange joints of gearbox housings, pumps, engines, tanks containing water or oil and air ducts in industrial systems.

What is the temperature resistance of the sealant?
Once cured, the seal operates from -55 °C to +180 °C and withstands short-term peaks up to about +200 °C.

Can a joint sealed with LOXEAL 59-20 be dismantled?
Yes, the cured sealant is removable – flange joints can be disassembled with standard tools and the remaining silicone can be mechanically removed.

How long does it take to fully cure?
Under typical conditions (around 22 °C and 50 % relative humidity) a skin forms after 30–50 minutes, functional strength is reached after several hours and full cure after 24–36 hours.

Can LOXEAL 59-20 grey replace conventional gaskets?
Yes, the elastic silicone bead replaces traditional gaskets made of rubber, gasket paper, cork or paper and follows the exact shape of the flange.