TYPE 502

The term "Sealergy Seals Type 502" is not a specific Sealergy product, but it is a designation that refers to a type of mechanical seal that is often a direct replacement for the John Crane Type 502. The John Crane Type 502 is a single, balanced, metal bellows seal that is a popular choice for high-temperature applications. The 502-type seal is used in various rotary equipment, including pumps, agitators, and compressors, for applications involving hot hydrocarbons, heat transfer fluids, and other high-temperature corrosive liquids. The metal bellows design eliminates the need for elastomer O-rings as a secondary seal. This allows the seal to operate effectively in a much wider temperature range, from cryogenic to very high temperatures (up to +400 °C, depending on materials), where elastomers would fail. The all-metal construction provides excellent resistance to a wide range of corrosive and aggressive chemicals. This makes the seal an ideal choice for the chemical, petrochemical, and refining industries where robust materials are required. The balanced design of the seal allows it to handle higher pressures and speeds with less heat generation and wear on the seal faces. This is crucial for heavy-duty applications, ensuring a longer service life and greater reliability. Because there are no elastomer O-rings sliding on the shaft, there is no risk of the seal "hanging up" due to frictional wear or chemical attack on the secondary seal. This ensures the seal remains effective throughout its operational life.

• Pressure: Up to 40 bar (580 PSI), though some models are rated for lower pressures, such as 10 or 25 bar.
• Non-Pusher.: Yes
• Bi-directional.: Yes
• Elastomer Bellows.: Yes
• This seal is considered an equivalent to John Crane Type 502: Yes