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Desco TFE Seal 115

Sealant for Leaking Valves

TFE Seal 115 is a semi-synthetic sealant especially formulated to seal leaking gate and ball valves with downstream seats. It has high metal adhesion to lubricate and seal gates as they enter the body cavity.

Typical Characteristics

TitleValue
AppearanceBlack, tacky, grainy
NLGI3
Penetration (ASTM D217)220-240
Worked penetration, 60x (ASTM D217)220-240
Base oilMineral oil/synthetic blend
Base oil viscosity143 cSt at 100°C
Base oil viscosity11 cSt at 40°C
Base oil viscosity index40
Base oil pour point-10°F (-23°C)
Solids contentPTFE
AdditivesEP, antioxidant and corrosion inhibitors
Specific gravity1.0
Density (lb/gal)8-8.5
Dropping point (ASTM D566)>500°F (260°C)
Flash point>400°F (200°C)
Temperature range-10°F – 350°F (-23°C - 177°C)