Loctite ® 518™ Gasket Eliminator ® Flange Sealant

Recommended for use on rigid iron, steel and aluminum flanges e.g. aluminum gearbox and engine castings, etc. Easy disassembly and cleaning.
Loctite® 518™ Gasket Eliminator® Flange Sealant forms a flexible, solvent-resistant seal that will not tear or decay. Seals to 300 °F and fills gaps to 0.50". It can be used on flexible metal assemblies, including aluminum surfaces.

Sealant for Gasketing
Gasketing is a sealant between two flanges assembled with screws. The sealant completely fills the space between the flange surfaces, thereby preventing the escape of gaseous or fluid materials in composite machine parts or pipe connections.
The sealant for gasketing can be used with many different types of materials including various metals, wood, plastic, rubber, ceramics, glass, and even concrete. The type of sealant selected for a specific application depends on the material to be sealed, environmental conditions, temperature, and operating pressures in the system.
> Learn more about sealant for gasketing

Other Top Pick Gasketing Sealants Products

Loctite® 515
Flexible flange sealant for use on rigid machined flanges
Recommended for coating and re-using gaskets to improve sealing. Approvals: AGA certificate 2590 to690kPa (Gas)

Loctite® 548
Semi-solid stick formula, ideal for on-the-spot repairs, or when a conventional gasket is out of stock.

It can be applied quickly and neatly on a variety of metal surfaces to form a flexible, solvent resistant seal.

Loctite® 510
Medium strength, high temperature flange sealant resists low on-line test pressures, uncured

Recommended for use on rigid metal parts e.g. cast iron components and pump housings, etc. operating athigh temperatures. Approvals: AGA certificate 2590 to690kPa (Gas)

> View all products about gasket sealants
> Download Loctite® gasketing product selector guide

Additional Documents

MSDS Documents
Technical Information

Product information

IDH# Item Size
Case Quantity
231611 22423
25 ml tube
5 / case
231613 22424
300 ml  
10 / case
209759 51817
6 ml tube
12 / case
135481 51831
50 ml tube
10 / case
135482 51845
300 ml cartridge
10 / case

Case Histories