Saisi Seal | High-Quality Mechanical Seals Manufacturer

About Saisi Seal

Delivering precision-engineered sealing solutions for over two decades.

Trusted Manufacturer Since 2004

Saisi Mechanical Seal Co., Ltd. specializes in the design and production of high-performance mechanical seals for a wide range of industrial applications. Our products are engineered to meet or exceed OEM specifications, ensuring compatibility, durability, and leak-free performance.

We serve industries including chemical processing, oil & gas, food & beverage, pharmaceuticals, power generation, and water treatment. Our commitment to quality, innovation, and customer support has made us a preferred partner for clients worldwide.

Over 20 years of manufacturing experience
ISO-compliant production processes
Direct OEM replacements for John Crane, Flowserve, Burgmann & more
Global distribution and technical support

Our Product Range

High-performance mechanical seals designed for reliability, longevity, and optimal sealing in demanding environments.

SS-8-1T

John Crane Type 8-1T Replacement

• Balanced mechanical seal
• PTFE bellows construction
• Ideal for chemical pumps
• Corrosion-resistant materials

SS-H8

High-Performance Cartridge Seal

• Easy installation
• Pre-assembled design
• Suitable for API 682 standards
• Dual or single configuration

SS-MFLWT

Metal Bellows Seal

• High-temperature resistance
• No elastomers in process
• Ideal for cryogenic applications
• Stainless steel or Inconel bellows

SS-H3B

Heavy-Duty Split Seal

• No pump disassembly required
• Reduces downtime by up to 70%
• For large pumps and mixers
• Corrosion-resistant alloys

SS-5620

Dry Gas Seal for Compressors

• Non-contacting face design
• Zero leakage performance
• For centrifugal compressors
• API 617 compliant

SS-Convertor II

AES Convertor II Cartridge Seal

• Direct replacement for AES
• Cartridge design for fast install
• Balanced seal for high pressure
• Carbon vs. silicon carbide faces

SS-ROA

Flowserve RO Replacement

• Compatible with Flowserve RO series
• Balanced mechanical seal
• For boiler feed and condensate pumps
• High-pressure capability

SS-M7N

Burgmann M7N Replacement

• Direct fit for Burgmann M7N
• Cartridge seal design
• For chemical and process pumps
• High corrosion resistance

SS-502

John Crane Type 502 Replacement

• Elastomer bellows construction
• Unbalanced design
• For clean, non-abrasive fluids
• Standard in many OEM pumps

View Full Catalog

Why Choose Saisi Seal?

20+ Years Experience

Proven expertise in mechanical seal design and manufacturing for diverse industrial applications.

OEM Quality

Our seals meet or exceed original equipment manufacturer specifications for reliable performance.

Global Support

We serve customers in over 50 countries with fast delivery and responsive technical assistance.

Custom Solutions

Need a special design? Our engineering team develops custom seals for unique applications.

Frequently Asked Questions

What types of mechanical seals do you manufacture?

We manufacture a wide range of mechanical seals including cartridge seals, split seals, metal bellows seals, agitator seals, dry gas seals, and pump-specific seals for brands like John Crane, Flowserve, Burgmann, Alfa Laval, Flygt, and Lowara.

Are your seals direct replacements for OEM products?

Yes, our seals are engineered to be direct replacements for major OEM brands. We ensure dimensional compatibility and performance equivalence to original equipment.

What materials are used in your mechanical seals?

We use high-quality materials including carbon, silicon carbide, tungsten carbide, aluminum oxide, PTFE, EPDM, Viton, stainless steel, Hastelloy, and Inconel, depending on application requirements.

Do you offer custom mechanical seal design?

Yes, we have an experienced engineering team that can design and manufacture custom mechanical seals for special applications, extreme conditions, or unique pump configurations.

What industries do you serve?

We serve a wide range of industries including chemical processing, oil & gas, power generation, water and wastewater treatment, food and beverage, pharmaceuticals, mining, and marine applications.

Get in Touch

Contact our team for product inquiries, technical support, or custom seal solutions.

Contact Information

B2, #25, Changxing Road 215636 Zhangjiagang, Jiangsu Province, China

+86-512-5866 5008

saisiseal

sales@saisiseal.com

www.saisiseal.com

How Can We Help?

For product specifications, pricing, technical drawings, or custom design requests, please reach out through our official website.

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