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Product Overview & Design
Steam turbine gland packing is the core sealing components of the steam turbine unit's lubrication system. The product adopts a composite structure combining traditional skeleton-type and lip seals. The core sealing material is made of oil-resistant nitrile rubber (NBR) or fluororubber (FKM), paired with a 45# steel reinforcement skeleton and wear-resistant alloy steel contact surfaces, achieving a balance of good elasticity and structural rigidity. It features a flexible sealing lip and spiral oil groove design. The sealing lip is made of fluororubber (FKM) or perfluororubber (FFKM), with a micro spiral groove machined at the lip (the oil guiding direction is opposite to the shaft rotation direction). This utilizes centrifugal force to guide the lubricating oil back into the oil tank.
Function & Application
The steam turbine-specific oil seals produced by our company carry forward classic structural designs and mature manufacturing techniques. They are tailor-made for various steam turbines used in thermal power generation, marine applications, and other fields, precisely preventing lubricant leakage and the ingress of external dust and moisture, thereby establishing a robust protective barrier for the safe and stable operation of the rotor shafting system.
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Specifications
The sealing lip undergoes precision grinding, forming an effective sealing band in contact with the journal surface. Compatible with shaft diameters ranging from 80 to 355 mm, the seals can withstand operating temperatures from -20°C to 120°C, capably handling diverse conditions such as turbine start-up, shutdown, and steady-state operation.
The manufacturing process strictly adheres to the GB/T 28723-2023 national standard and DIN sealing standards. Through multiple procedures including mold pressing, high-temperature vulcanization, and precision grinding/polishing, dimensional accuracy and sealing reliability are ensured.
Performance & Lifespan
The product's leakage rate is controlled within superior industry standards, and it features outstanding wear resistance. Under normal operating conditions, the service life can exceed 18,000 hours, effectively reducing the frequency of downtime for maintenance.
Installation & Usage
Installation employs traditional split-type or solid designs, adapting to various axial mounting spaces on steam turbines. Disassembly and maintenance are convenient, requiring no complex specialized tools.
Widely used in critical sealing areas such as the high/intermediate-pressure cylinder, low-pressure cylinder, and generator end of steam turbines, our product has gained market trust over the long term thanks to its traditional strengths of "reliable sealing, durable materials, and easy installation." It has become the trusted choice for numerous power plants and heavy industrial enterprises.
