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108U Series Mechanical Seal 108U-20/25/30/35/40/45/50/55/60/65/70 - China Factory Suppliers for Chemical Pumps

Introducing the 108U Series Mechanical Seal, a versatile product designed to meet international standards and manufactured in China. This universal mechanical seal features a simple yet effective internal mounting, single-face, single-spring, and unbalanced design, making it ideal for shafts with diameters ranging from 35mm to 70mm. It operates efficiently at pressures up to 0.8MPa and can withstand temperatures from -20°C to 120°C. The 108U Series is suitable for sealing various media, including water, oil, acids, alkalis, and organic solvents. As a reliable solution from trusted suppliers and manufacturers in China, its robust structure ensures consistent performance in diverse applications. Choose the 108U Series Mechanical Seal for dependable sealing solutions tailored to your needs

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

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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.

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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.

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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.

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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 industrial pump applications.

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

The 108U mechanical seal operates reliably within a temperature range of -20°C to 120°C, covering most common industrial process conditions.

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

The 108U mechanical seal complies with ISO 3069, GB 6556, and DIN 24960, ensuring dimensional accuracy, universality, and interchangeability with standard pump housings globally.

Why is the rotational direction important when installing the 108U mechanical seal?

The 108U uses a hook spring drive to transmit torque, which fixes the seal's rotational direction. Installing it against the correct pump shaft rotation direction is critical to ensure proper torque transmission and prevent seal failure.

Is the 108U mechanical seal suitable for media containing fine particles?

Yes. The single large-spring design provides superior clog resistance compared to multi-spring alternatives, making the 108U well-suited for pumping fluids that contain fine suspended particles.

In which industries is the 108U mechanical seal most commonly used?

The 108U mechanical seal is widely used in petrochemicals, oil refining, chemical processing, synthetic fibre manufacturing, water treatment, and chemical transfer applications due to its excellent corrosion and wear resistance.