169 Series Seals
Category:National Standard Series
1. External single-end mechanical seal,
2. Multiple springs,
3. Balanced type
Detailed introduction
The 169 series mechanical seal is an externally mounted, single-face sealing solution specifically designed for applications involving highly alkaline media containing crystalline particles. It boasts exceptional wear resistance and corrosion resistance, making it ideally suited for critical equipment in industries such as chlor-alkali and salt production.
✅ Core Parameters and Performance
Operating parameters: Pressure ≤ 0.4 MPa, temperature -20℃ to 150℃ (some specifications reach up to 180℃), rotational speed ≤ 3000 r/min, suitable for medium- and low-pressure conventional operating conditions.
Strong corrosion and wear resistance: Specifically designed for highly alkaline media such as alkali solutions and salt solutions; the friction pair is made of tungsten carbide (WC) hard alloy, offering excellent wear resistance and ensuring trouble-free performance even when dealing with media containing crystalline particles.
Self-balancing and wear-reducing: Utilizing a PTFE bellows structure to achieve automatic balancing, significantly reducing end-face friction and wear, and extending service life.
✅ Structural features
External multi-spring design: Easy to install, compatible with a variety of equipment cavities, and boasts high operational stability.
Cemented carbide friction pair: Both the stationary and rotating rings are made of tungsten carbide, offering excellent wear resistance, impact resistance, and resistance to erosion by crystalline particle-containing media.
PTFE bellows self-balancing: advanced structure effectively reduces end-face specific pressure, making it suitable for long-term operation under highly corrosive conditions.
✅ Applicable scenarios
Typical media: Alkaline solutions, salt solutions, and corrosive media containing crystalline particles.
Covered industries: Chlor-alkali, salt production, papermaking, nitrogen fertilizer, phosphate fertilizer, and other industrial production equipment.
🔥 Preferred for sealing in strongly alkaline media
The 169 series mechanical seals, leveraging the core advantages of hard alloy wear resistance and self-balancing PTFE bellows, precisely address the sealing challenges posed by highly alkaline media containing crystalline particles. They are an ideal choice for industries such as chlor-alkali and salt production.
Applicable host
Product Features
Use parameters
1. Medium: Alkaline and saline solutions with a concentration of less than 42%, containing solid particles at a concentration of 10% to 20%, in a particulate, corrosive liquid state.
2. Operating pressure: 0~0.4 MPa
3. Operating temperature: -20℃ ~ 150℃
4. Linear speed: ≤3000 r/min
Keywords：169 Series Seals
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Plan 23
Core positioning: A single-face seal self-flushing solution specifically designed for hot-water pumps. The medium is guided out of the self-sealing cavity, cooled, and then returned to the sealing face, achieving integrated self-circulation for flushing and cooling without the need for additional medium replenishment.
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Plan 53A
Reason for adoption: Isolate the process fluid. Zero discharge of the process fluid.
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Plan 53B
Reason for adoption: Isolation of process liquids; zero discharge of process fluids; pressure exceeding the 53A scheme.
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Plan 53C
Reason for adoption: Isolate the process fluid. Achieve zero discharge of the process fluid. Pressure exceeds the 53A design specification. Dynamically monitor system pressure.
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