Mechanical Seals

Type YH604 is the leading seal of choice for demanding, high-temperature applications. Available in either AM350 or Inconel 718, its high strength design provides maximum reliability. The stationary bellows design accommodates high shaft speeds (up to 50 mps/10,000 sfpm) and high shaft-to-box misalignment.
Unlike rotating seals that must flex on every revolution to accommodate shaft-to-box misalignment, the stationary YH604 adapts to this misalignment by flexing only once during installation. This reduces seal movement, resulting in increased seal life.
The seal faces are extremely stable and remain in close contact, reducing minute leakage and subsequent carbonization (coking) or crystallization. Premature seal failure is eliminated and MTBPM is maximized, The Type YH604 has been tested per API-682 Type C seals for high-temperature hydrocarbon services. Its excellent performance history has made it the preferred seal for high-temperature fluid applications.
□ Performance Capabilities
Temperature:
-75°C/-100°F to 425°C/800°F
with Graf oil static packing
Pressure:
vacuum to 20 bar / 300 psi
vacuum to 69 bar / 1000 psi
with DOUBLE-PLY bellows
Speed:
to 50 mps / 10,00 sfpm
□ Materials of Construction
Bellow:
Heat-treated AM350 or Inconel 718
Adaptive Hardware:
300 Series Stainless Steel
Faces:
Carbon, Tungsten Carbide, or SealideTM
Static Seals:
Graf oil
□ Applications:
High temperature service including heat transfer fluids, hydrocarbons and other thermosetting and viscous media.

Xi'an Yonghua is specialized in manufacturing a wide range pump-usingmachinery seal pieces, and development & design of a variety of non-standard seal pieces.Our products are mainly applied to the chemical,pharmaceutical,petrochemical,metallurgical,and printing,dying industries.And we had jointed venture with EG&G Sealol in 1990s.So our factory is well equipped with advanced testing and inspection facilities and greatly applauded with the product quality,technical assistance and good reputation by our clients.Our products receive many awards and prizes among nationwidecompetitor,and are well soldboth in domestic and overseas markets. [ Buying Categories ] - Minerals & Metallurgy >> Other Non-Metallic Minerals & Products - Energy >> Other Energy Related Products - Apparel >> Other Apparel - Manufacturing & Processing Machinery >> Other Manufacturing & Processing Machinery - Minerals & Metallurgy >> Other Metals & Metal Products