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China 108U Series Mechanical Seal Suppliers - Factory Direct Single-Spring Unbalanced Design for Chemical Pumps

Introducing the 108U Series Mechanical Seal, a premier product designed to meet international standards and enhance your operations. Manufactured in China, this seal features an internal mounting, single-face, single-spring, unbalanced design, and is suitable for shaft diameters from 35mm to 70mm. Our factory ensures top-notch quality, offering reliable sealing at pressures up to 0.8MPa and temperatures ranging from -20°C to 120°C. Ideal for various media including water, oil, acids, alkalis, and organic solvents, the 108U Series is known for its straightforward structure and dependable performance. Choose our mechanical seals and experience the quality that leading suppliers trust

Product Details

Product Introduction

The 108U mechanical seal is a typical single-spring unbalanced mechanical seal designed for highly corrosive pumps. This seal structure complies and is widely applicable across various pump types, particularly for demanding highly corrosive conditions in industries such as petrochemicals, refining, and chemical processing. Its single-face, single-spring design ensures a compact structure that is straightforward to install and maintain.

Performance parameters for the 108U mechanical seal include: operating pressure not exceeding 0.8MPa, operating temperature range from -20°C to 120°C, rotational speed not exceeding 3000r/min, and applicable shaft diameter range from 35mm to 70mm. These specifications enable the 108U to adapt to diverse operational environments and pump requirements.

Furthermore, the 108U mechanical seal features: a single-spring configuration where the spring transmits torque, with spring rotation direction dependent on the pump shaft rotation; excellent wear and corrosion resistance for harsh environments; simple construction, low cost, broad applicability, and reliable, stable performance.

Owing to its outstanding wear and corrosion resistance, the 108U mechanical seal finds extensive application across industries including petrochemicals, oil refining, chemical processing, synthetic fibres, water treatment, and chemical transfer.

Features

The 108U mechanical seal employs a single-spring configuration, with torque transmitted via the spring whose rotation direction correlates with the pump shaft rotation. It exhibits excellent wear and corrosion resistance, rendering it suitable for demanding operating conditions. Its straightforward construction, cost-effectiveness, and widespread adoption ensure reliable and stable performance.

The seal's core components, particularly the friction pair faces, undergo precision machining and lapping to guarantee superior sealing performance. The product complies with multiple international and national standards, including ISO 3069, GB 6556, and DIN 24960, guaranteeing dimensional accuracy, universality, and interchangeability throughout the manufacturing process.

This series of seals typically employs spring-transmitted torque (via a hook spring drive), a structure renowned for its reliable transmission. It is important to note that this design fixes the seal's rotational direction; therefore, the pump shaft's rotation must be carefully considered during installation.

The single-spring (large spring) design offers superior resistance to clogging compared to multi-spring configurations, making it more suitable for media containing fine particles. Additionally, the single-face design results in a relatively simple structure, contributing to cost reduction and ease of maintenance.

Frequently Asked Questions

What is the maximum operating pressure the 108U mechanical seal can withstand?

The 108U mechanical seal is rated for an operating pressure not exceeding 0.8 MPa, making it suitable for a wide range of standard pump applications in industrial environments.

What temperature range is the 108U mechanical seal designed for?

The 108U mechanical seal operates effectively within a temperature range of -20°C to 120°C, accommodating both low-temperature and moderately high-temperature process conditions.

What shaft diameter sizes are compatible with the 108U mechanical seal?

The 108U mechanical seal is compatible with shaft diameters ranging from 35mm to 70mm, providing versatility for installation on various pump models and sizes.

Does the rotation direction of the pump shaft affect the installation of the 108U seal?

Yes. The 108U uses a hook spring drive to transmit torque, which means the seal's rotational direction is fixed. It is essential to verify and match the pump shaft's rotation direction before installation to ensure proper sealing performance and avoid premature failure.

Which industries are best suited for the 108U mechanical seal?

The 108U is widely used in petrochemicals, oil refining, chemical processing, synthetic fibre manufacturing, water treatment, and chemical transfer applications — particularly where highly corrosive media are present.

What international standards does the 108U mechanical seal comply with?

The 108U mechanical seal conforms to ISO 3069, GB 6556, and DIN 24960 standards, ensuring dimensional accuracy, broad interchangeability, and compatibility with pumps manufactured to these widely adopted specifications.