The tungsten carbide sealing ring is constructed from tungsten carbide powder as raw material, nickel powder or cobalt powder is added as binder, and it is pressed right into a ring by mold and sintered in a vacuum. There is no room for mistake in every processing link, or else there will be discrepancies in size and precision. The mechanical seal ring is the most integral part of the mechanical seal. The quality of the seal ring identifies the life span and also sealing performance of the seal to a huge degree.
Tungsten Carbide Rings Features：
1. High thermal shock resistance. Does not damage under thermal shock
2. The carbide ring has excellent self-lubricating properties, making the friction coefficient smaller
3. Under high temperature and high pressure, it can still maintain high hardness and high strength, and is not easy to deform
4. It has excellent corrosion resistance and can be in contact with most corrosive objects
5. Professional equipment production, quality assurance
6. Exclusive customized service to provide you with the most suitable products for you
Cobalt Binder Grades
Grade | Binder (Wt %) | Density (g/cm3) | Hardness (HRA) | TRS (>N/mm²) |
YG6 | 6 | 14.8 | 90.0 | 1520 |
YG6X | 6 | 14.9 | 91.0 | 1450 |
YG6A | 6 | 14.9 | 92.0 | 1540 |
YG8 | 8 | 14.7 | 89.5 | 1750 |
YG12 | 12 | 14.2 | 88.0 | 1810 |
YG15 | 15 | 14.0 | 87.0 | 2050 |
YG20 | 20 | 13.5 | 85.5 | 2450 |
YG25 | 25 | 12.1 | 84.0 | 2550 |
Nickel Binder Grades
Grade | Binder (Wt %) | Density (g/cm3) | Hardness (HRA) | TRS (>N/mm²) |
YN6 | 6 | 14.7 | 89.5 | 1460 |
YN6X | 6 | 14.8 | 90.5 | 1400 |
YN6A | 6 | 14.8 | 91.0 | 1480 |
YN8 | 8 | 14.6 | 88.5 | 1710 |
Typical Tungsten Carbide Grade Mechanical Properties for Mechanical seal rings
| Grade | Main Chemical Composition（wt%） | Modulus Of Elasticity （KN/m㎡） | Compressive Strength （N/m㎡） | Thermal Conductivity （W/m-K） | Coefficient Of Thermal Expansion | ||||
| WC | Co | Ni | TiC | Mo | |||||
| YG6 | 94 | 6 | - | - | - | 630 | 5500 | 100 | 5.5×10-6/ K |
| YG8 | 92 | 8 | - | - | - | 590 | 5200 | 90 | 5.8×10-6/ K |
| YG15 | 85 | 15 | - | - | - | 530 | 4600 | 70 | 6.2×10-6/ K |
| N100 | 94 | - | 6 | - | - | 600 | 4500 | 90 | 5.3×10-6/ K |
| N200 | 92 | - | 8 | - | - | 570 | 4300 | 80 | 5.2×10-6/ K |
| TIP | 81.5 | 8.5 | 10 | - | 530 | 4700 | 70 | 5.6×10-6 /K | |
| QT200 | 25 | - | 15 | 52 | 8 | 400 | 3400 | 25 | 7.8×10-6 /K |
Typical Mechanical Seal rings drawings.
