Mechanical Reactor Seal
The mechanical reactor seal helps you operate a glass-lined reactor more safely by reducing leakage risk, protecting product cleanliness, and supporting stable long-term performance in demanding process conditions. The mechanical reactor seal is especially important when handling corrosive, flammable, explosive, or toxic media, where sealing reliability directly affects both production safety and process control.
Installed in the top drive system of a glass-lined reactor, the mechanical reactor seal forms the dynamic seal between the agitator shaft and the reactor body. By isolating the process media from outside air and preventing external impurities from entering the vessel, the mechanical reactor seal helps maintain safe reactor operation and cleaner processing conditions. The design is matched to the operating requirements of glass-lined reactors, including pressure resistance, corrosion resistance, low vibration, and long service cycles.
- Widely Used Sealing Solution for Agitator Shafts
The mechanical reactor seal is the mainstream dynamic sealing solution for agitator shafts in glass-lined equipment. The sealing function is achieved through the precise contact between the rotating ring and the stationary ring, which form the sealing face. - Low Wear during Operation
The mechanical reactor seal uses a non-contact or micro-contact sealing method, which helps reduce wear and supports longer operating life. - Convenient Assembly with Precise Installation
The mechanical reactor seal requires accurate installation, while cartridge-type designs make assembly and replacement more convenient. - Stable Sealing Performance under Normal Operating Changes
The mechanical reactor seal maintains stable sealing performance and is not easily affected by small fluctuations in operating conditions. - Different seal types for different process requirements
According to the number of sealing faces, the mechanical reactor seal can be divided into single mechanical seals and double mechanical seals. According to the friction medium between the rotating ring and stationary ring, the mechanical reactor seal can be classified as wet-running, dry-running, or dry gas sealing.
According to the arrangement of the sealing faces, the mechanical reactor seal can also be divided into radial sealing and axial sealing.
The 212 single mechanical seal is a practical sealing solution for glass-lined reactors operating under relatively standard pressure and speed conditions. This single mechanical seal helps you maintain reliable shaft sealing performance when handling strongly corrosive media without suspended particles, making it suitable for process duties where sealing stability and cost control are both important.
Designed for operating conditions of 0.4 MPa pressure, -40°c to 150°c temperature, ≤2 m/s shaft speed, and shaft diameters from 30 mm to 150 mm. The 212 single mechanical seal is suitable for media such as sulfuric acid, nitric acid, and organic acids, provided that the media do not contain suspended solids.
The 212 single mechanical seal mainly consists of one set of sealing faces made up of a rotating ring and a stationary ring, together with elastic elements such as springs and auxiliary sealing rings such as O-rings. It is installed between the rotating shaft and the stationary housing to create the required dynamic sealing function.
The stationary ring is generally made of silicon carbide, while the rotating ring is typically made of modified PTFE, allowing the 212 single mechanical seal to provide suitable corrosion resistance and sealing performance for the intended operating conditions.
| d | D1 | D2 | D3 | n-Φ |
| 40 | 90 | 130 | 160 | 4-Φ18 |
| 50 | 100 | 150 | 185 | 4-Φ18 |
| 65 | 115 | 170 | 205 | 4-Φ18 |
| 80 | 130 | 200 | 235 | 8-Φ18 |
| 95 | 150 | 200 | 235 | 8-Φ18 |
| 102 | 150 | 255 | 290 | 8-Φ18 |
| d | D1 | D2 | D3 | n-Φ |
| 40 | 90 | 130 | 160 | 4-Φ18 |
| 50 | 100 | 150 | 190 | 4-Φ18 |
| 65 | 115 | 170 | 210 | 4-Φ18 |
| 80 | 130 | 200 | 240 | 8-Φ18 |
| 95 | 150 | 225 | 265 | 8-Φ18 |
| 110 | 165 | 280 | 320 | 8-Φ18 |
| 125 | 180 | 280 | 320 | 8-Φ18 |
| 140 | 195 | 335 | 375 | 12-Φ18 |
Built for high-risk and demanding operating conditions, the 2009 double mechanical seal provides a higher level of sealing protection for glass-lined reactors. It is a suitable choice when your process involves flammable, explosive, toxic, or corrosive media, where sealing reliability is critical to both operating safety and product protection.
Typical operating conditions for the 2009 double mechanical seal include pressure from 0.6 to 1.6 MPa, temperature from -20°c to 150°c, shaft speed up to 3 m/s, and shaft diameters from 30 mm to 160 mm. Compatible media include oil, water, weak alkalis, weak acids, and flammable, explosive, or toxic gases.
At the core of the 2009 double mechanical seal are two sets of precision sealing faces, each consisting of a rotating ring and a stationary ring. Together, these two sealing sets form a double sealing barrier. An isolation liquid is introduced between the sealing faces to create an added layer of protection and improve sealing security under demanding conditions.
With this double-barrier design, the 2009 double mechanical seal is well suited for high-pressure, high-vacuum, flammable, explosive, toxic, and strongly corrosive applications in glass-lined reactors.
| Size | d (mm) | D1 (mm) | D2 (mm) | n-Φ (mm) | H (mm) | |
| Shaft Diameter | 40 | 40 | 175 | 145 | 4-Φ18 | 135 |
| 50 | 50 | 240 | 210 | 8-Φ18 | 140 | |
| 60 | 65 | 240 | 210 | 8-Φ18 | 150 | |
| 80 | 80 | 275 | 240 | 8-Φ22 | 160 | |
| 95 | 95 | 305 | 270 | 8-Φ22 | 170 | |
| 110 | 110 | 330 | 295 | 8-Φ22 | 195 | |
| 120 | 120 | 330 | 295 | 8-Φ22 | 195 | |
| 140 | 140 | 395 | 350 | 12-Φ18 | 200 | |
| 160 | 160 | 395 | 350 | 12-Φ18 | 205 | |
