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
| Title | Value |
| Appearance | Black, tacky, grainy |
| NLGI | 3 |
| Penetration (ASTM D217) | 220-240 |
| Worked penetration, 60x (ASTM D217) | 220-240 |
| Base oil | Mineral oil/synthetic blend |
| Base oil viscosity | 143 cSt at 100°C |
| Base oil viscosity | 11 cSt at 40°C |
| Base oil viscosity index | 40 |
| Base oil pour point | -10°F (-23°C) |
| Solids content | PTFE |
| Additives | EP, antioxidant and corrosion inhibitors |
| Specific gravity | 1.0 |
| 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) |