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Precision Mechanical Seals for Demanding Industrial Applications

Ningbo Tiansun Mechanical Seals Co., Ltd. delivers high-performance sealing solutions trusted by global pump manufacturers and industrial operators. Engineered for reliability, durability, and leak-free operation.

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About TISUN Seals

Based in Ningbo, Zhejiang Province, China, Ningbo Tiansun Mechanical Seals Co., Ltd. is a professional manufacturer specializing in the research, development, and production of mechanical seals for industrial pumps, mixers, compressors, and agitators.

With years of experience and advanced manufacturing capabilities, we provide OEM and replacement mechanical seals that meet international standards. Our products are widely used in chemical processing, water treatment, oil & gas, pharmaceuticals, and power generation industries.

100+
Product Models
50+
Global Markets
TISUN Assembly Workshop

Our Product Range

From cartridge seals to OEM replacements, we offer a comprehensive portfolio of mechanical seals engineered for performance and longevity in harsh environments.

Elastomer Bellow Mechanical Seal

TS-502 Elastomer Bellow Seal

Single spring, pusher-type mechanical seal with elastomer bellow for pumps. Ideal for chemical and water applications.

  • Shaft Size: 20–50mm
  • Materials: SIC/SIC/EPDM
  • Max Temp: 120°C
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T-W03S Mechanical Seal

T-W03S Pusher Seal

Reliable mechanical seal for industrial pumps. Designed for continuous operation with minimal maintenance.

  • Single Spring Design
  • For Chemical & Water Pumps
  • OEM Replacement
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T-8B1 Mechanical Seal

T-8B1 Single Spring Seal

High-quality mechanical seal for chemical machinery pumps. Corrosion-resistant and thermally stable.

  • Shaft Size: 25–60mm
  • Materials: SIC/SSiC/NBR
  • Max Pressure: 1.5 MPa
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T-M7N O-Ring Seal

T-M7N O-Ring Mechanical Seal

Durable O-ring seal with excellent sealing performance in abrasive and high-vibration environments.

  • Compact Design
  • For Water & Wastewater
  • Long Service Life
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Type 1527 O-Ring Seal

Type 1527 O-Ring Seal

Standard mechanical seal for water pumps. Cost-effective and easy to install.

  • Stationary O-Ring Design
  • Interchangeable with Major Brands
  • Low Leakage Rate
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T-210 Mechanical Seal

T-210 Pusher Seal

Versatile mechanical seal for general industrial pumps. Suitable for clean and mildly abrasive fluids.

  • Single Spring, Balanced
  • Shaft Size: 20–55mm
  • Max Temp: 100°C
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FS Mechanical Seal

FS Mechanical Seal

High-performance seal for chemical pumps. Resistant to aggressive media and high temperatures.

  • Corrosion-Resistant Alloys
  • For Acid & Alkali Handling
  • Long Operational Life
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Cartridge Mechanical Seal CURC

Cartridge Seal CURC for Goulds 3196

Direct replacement for Goulds Pump 3196. Pre-assembled cartridge design for quick installation.

  • High-Quality Replacement
  • No Field Measurement Needed
  • Reduces Downtime
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Advanced Technology & Service

At TISUN, we combine precision engineering with rigorous quality control to deliver mechanical seals that exceed industry expectations.

Precision Manufacturing

CNC machining, laser welding, and automated assembly ensure consistent quality and dimensional accuracy.

Material Expertise

We use premium materials including Silicon Carbide (SIC), Tungsten Carbide, PTFE, EPDM, and Viton for optimal performance.

Quality Assurance

Every seal undergoes 100% pressure testing and inspection to ensure leak-free operation under real-world conditions.

TISUN Manufacturing Technology

Get in Touch

Contact our team for product inquiries, technical support, or OEM collaboration.

Sales & Inquiries

  • Tel: +86-18658260067
  • Email: tina@tsseals.com
  • WhatsApp: +8618658260067
  • WeChat: +86-18658260067

Company Info

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