Rubber Bellow Mechanical Seal Manufacturer
-designed for versatile pump applications
Our seals deliver long service life, easy installation, and reliable sealing under fluctuating pressure.
Sealing Challenges for Slurry Pumps
The rubber bellow mechanical seal is a single spring sealing structure that utilizes the elasticity of the rubber corrugated pipe to achieve axial compensation. Its function is to prevent the leakage of liquids or gases along the pump shaft, ensuring the long-term stable operation of the system.
The bellows can automatically compensate for end face wear, shaft offset and thermal expansion and contraction, maintaining a constant pressure on the sealing surface. Compared with metal bellows, it has better flexibility; compared with O-ring push-ring seals, its structure is simpler and installation is more convenient.
Sakowitz rubber corrugated pipe seals are renowned for their high reliability, corrosion resistance and ease of maintenance. They are ideal choices for centrifugal pumps, chemical pumps and sewage pumps.
Why Choose Sakowitz Rubber Bellow Seals for Pumps
Sakowitz rubber corrugated pipe seals are renowned for their high reliability and ease of maintenance, making them an ideal choice for industrial pump systems. Their unique design ensures stable sealing under various operating conditions, significantly extending the lifespan of the equipment.
Key advantages:
- Automatic compensation for wear and offset: The corrugated tube structure can continuously adjust the sealing pressure to prevent leakage.
- Excellent vibration absorption and noise reduction performance: The rubber corrugated tube effectively buffers the pump body vibration, protecting the bearings and sealing surfaces.
- Outstanding corrosion resistance and temperature performance: Suitable temperature range: -20°C to +180°C, suitable for various media.
According to the test results of the Sakowitz engineering team, the rubber corrugated pipe seal has an average lifespan increase of 25% under standard operating conditions, and the assembly time is shortened by 30%.
Rubber Bellow Mechanical Seal Product Series
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Sakowitz Rubber Bellow Seal Design & Specifications
Sakowitz rubber corrugated pipe seals are renowned for their precise structural design and combination of high-performance materials, which enables them to maintain stable sealing performance in various industrial conditions. The design of these seals takes into account flexibility, durability, and ease of maintenance, meeting the requirements of different pump types and media.
Structure and Types
Sakowitz corrugated pipe seals offer various structural forms to accommodate different installation conditions:
- Single-ended / Double-ended option available: The single-ended design is cost-effective and practical, while the double-ended design is suitable for high-pressure or corrosive media.
- Integrated design: Compact structure, low space occupation, suitable for standard pump cavities.
- Automatic compensation system: The bellows can self-adjust the sealing pressure, extending the service life.
Material Combination
High-quality materials ensure stable performance even under high temperatures, high speeds and corrosive media.
| Component | Material Options |
|---|---|
| Seal Face | Silicon Carbide (SiC) / Carbon Graphite / Ceramic |
| Bellow | NBR (Nitrile Rubber) / EPDM (Ethylene Propylene Diene Rubber) / FKM (Fluoroelastomer) |
| Metal Parts | Stainless Steel SS304 / SS316 |
Performance Parameters
- Pressure range: ≤ 1.6 MPa
- Temperature range: -20°C ~ +180°C
- Applicable media: Water, oil, chemical liquids, sewage, etc.
The test results show that the Sakowitz seal can maintain a leakage rate of less than 0.5 mL/h even under a pressure of 1.5 MPa, which is much better than the industry average. The design team of Sakowitz has strictly adhered to engineering accuracy and reliability in every detail, making this series of bellows seals a reliable sealing solution in the chemical, wastewater treatment, pharmaceutical, and energy industries.
Applications of Rubber Bellow Mechanical Seals
The most common application scenario. The rubber corrugated pipe seal can automatically compensate for axial displacement, maintain the end face alignment, and prevent leakage during high-speed operation.
It can maintain good elasticity and sealing performance even in a long-term immersion environment. It is suitable for use in groundwater, cooling water and drainage systems.
The combination of FKM and silicon carbide material exhibits excellent resistance to chemical corrosion, enabling it to safely handle acid and alkali solutions, organic solvents, and slightly corrosive liquids.
The sealing structure can withstand negative pressure conditions, preventing gas backflow and leakage, and ensuring the stability of the system’s vacuum level.
The EPDM corrugated pipe has excellent water resistance and anti-contamination properties, and is suitable for working conditions involving solid particles or light corrosive media.
The product is made of FDA-certified rubber material, ensuring the safety of the medium and suitable for sanitary pump bodies and clean environments.
Why Engineers Trust Sakowitz Seals
Sakowitz has been deeply involved in the field of mechanical seals for over 35 years. With its rich experience, precise manufacturing and technical support, it has become the preferred partner for numerous engineers and equipment manufacturers. Each of our rubber corrugated tube seals has been rigorously designed and tested to ensure long-term stable operation in various industrial environments.
The three core reasons why engineers trust us:
- 35+ Years of Industry Experience: Profound understanding of pump sealing structures and fluid characteristics, with products covering fields such as chemical engineering, pharmaceuticals, and water treatment.
- Customized Design Capability (OEM/ODM): Capable of designing exclusive sealing solutions tailored to pump type, medium, and operating conditions.
- Fast Delivery and Technical Support: Professional team provides selection guidance, installation suggestions, and after-sales support to ensure continuous production for customers.
Want to know which type of rubber corrugated pipe seal is the most suitable for your pump? Contact the Sakowitz engineering team for free technical advice.
FAQ – Common Questions About Rubber Bellow Mechanical Seals
Q1: Which media are rubber corrugated pipe mechanical seals suitable for?
Suitable for clean water, lubricating oil, light corrosive chemical liquids, sewage and weak acid-base media. With the selection of appropriate corrugated pipe material, it can also be used for chemical solutions and cooling circulation systems.
Q2: How to select the appropriate material for the bellows?
Select based on the medium and temperature environment:
- NBR: Suitable for water and oil-based media, an economical option.
- EPDM: Resistant to heat and steam, suitable for water treatment and food industries.
- FKM: Resistant to acids, alkalis and high temperatures, suitable for chemical and heavy industry applications.
Q3: What’s the typical service life?
The Sakowitz products feature precise grinding of the end faces, imported rubber materials and stainless steel frame structure, resulting in an average increase of 25% in the sealing lifespan and a leakage rate lower than the industry standard. They also offer comprehensive technical support and traceable material certification.
Q4: Can rubber corrugated pipe seals be used for corrosive chemical media?
Yes. It is recommended to use the FKM + SiC / SiC combined structure, which can withstand strong acids, strong bases and high-temperature environments (up to 180°C).
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