Gasketing Compound - 8518-50

8518
Flexible Solvent Resistance High Viscosity
Gasket Sealant

8518 is an anaerobic gasket sealant, which develops medium strength in a short time. The compound cures in the absence of air between close fitting metal surfaces.

8518 is a flexible gasketing sealant, which will flex with minor flange movements. Provides resistance to low pressure immediately after assembly of flanges

Applications:
- Typically used as a form-in-place on rigid flanged connections, e.g. gearbox and engine castings, etc.
- Thixotropic nature reduces the migration of liquid product after application.

Colour: Red
Cure State: Flexible
Temperature Range: -55 to 150°
Gap Fill: Unprimed: 0.254 mm, Primed: 1.27 mm
Viscosity cps: 800,000/3,750,000 Thixotropic
Cure: Unprimed: 1-2 hours, Primed: 15 mins - 2 hours


Adhesive Properties:
Composition: Dimethacrylate ester
Color: Red
Viscosity: 800,000 – 3,750,000 cps at 25°C
Brookfield RVT Spindle 7 @ 20 rpm
Specific Gravity: 1.13
Maximum Diameter of Thread/Gap Fill >0.50mm
Flash Point: 93°C
Solvent Content: None

Curing Properties:
Handling Cure Time:
Unprimed Surfaces 4 - 24 hours
Primed Surfaces 30 mins to 4 hours.
Compressive Shear Strength:
(ISO 10123)
After 24 hrs at 22°C
Steel Pins & Collars >5 N/mm2 >725 psi
Lap Shear Strength, ISO 4587
Steel (grit blasted) 7.5 N/mm2 1,100 psi
Lap Shear Strength, ISO 6922
Steel (grit blasted) 8.5 N/mm2 1,200 psi
Temperature Range -55 to 150°C

Physical Properties:
Coefficient of Thermal Expansion: 80×10-6
ASTM D 696, K-1
Coefficient of Thermal Conductivity: 0.10
ASTM C 177, W/ (m·K)
Specific Heat, kJ/ (kg·K) 0.30