LOCTITE® 518 cures when confined in the absence of air between close-fitting metal surfaces. It is an anaerobic gasketing material designed for use on rigid iron, aluminum, and steel flanged mating surfaces. LOCTITE 518 fills gaps up to 0.25mm and forms a flexible, chemical-resistant seal that will not tear or decay. Parts disassemble easily, even after extended service. Typical applications include sealing close-fitting joints between rigid metal faces and flanges. It is also used as a formed-in-place gasket on rigid flanged connections, e.g. transmissions and motor housings.
- Semi-flexible, medium-strength anaerobic flange gasket
- For active and inactive rigid metal flanges
- Cures through minor surface contamination
- Adapts to flange surface irregularities and gaps up to 0.25 mm
- Gel-type consistency
- Seals instantly against low pressure
- Reduces inventory costs – no need for large inventory of cut gaskets
- Resists high pressure when fully cured
- No compression set or misaligned gaskets
- Easy to automate
- Reduces process costs – eliminates manual assembly of conventional gaskets
- NSF P1 Reg. No. 123758
Technical Details
| Recommended for use with | Metal: Aluminum, Metal: Iron – Cast Iron, Metal: Steel, Metal: Passive Metal |
| Storage temperature | 8.0 °C – 21.0 °C |
| Fixture time, Steel | 25.0 min. |
| Lab shear strength | 7.5 |
| Color | Red |
| Specific gravity, @ 25.0 °C | 1.1 |
| Viscosity | 750000.0 mPa·s (cP) |
| Viscosity, Brookfield – HBT, @ 25.0 °C | 3000000.0 – 4500000.0 |
| Viscosity, Brookfield – HBT, @ 25.0 °C | 500000.0 – 1000000.0 |
| Gap fill, Unprimed | 0.25 mm |
| Applications | Rigid Assembly Gasketing, Sealing |
| Operating temperature | -55.0 °C – 150.0 °C ( -65.0 °F – 300.0 °F ) |
| Key characteristics | Thixotropic, For machined, rigid flanges, Fluorescent, Strength: Medium Strength, Immediate Low Pressure Sealing, Surface Contamination-Tolerant |
| Technology | Acrylic |
| Application method | Dispense System, Manual |
| Physical form | Gel |
| Cure type | Anaerobic Cure |
| Chemical basis / base | Dimethacrylate Ester |
| Number of components | 1 Part |
| Product Type | Industrial sealants,Gasketing sealants |
| Technology Names | Acrylates,Acrylates, anaerobic cure |
