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108U Series Mechanical Seal - China Suppliers and Factory for Alloy Chemical Pumps (35mm to 70mm)
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108U Series Mechanical Seal - China Suppliers and Factory for Alloy Chemical Pumps (35mm to 70mm)

The 108U Series Mechanical Seal is a versatile solution manufactured in China, adhering to international standards for quality and performance. This mechanical seal features a simple structure with an internal mounting, single-face, single-spring, and unbalanced design, making it suitable for shaft diameters from 35mm to 70mm. Designed by reliable suppliers in the industry, it operates efficiently at pressures up to 0.8MPa and temperatures ranging from -20°C to 120°C. The 108U Series effectively seals a variety of media, including water, oil, acids, alkalis, and organic solvents. This dependable product is an excellent choice for various applications, brought to you by a leading factory committed to quality and customer satisfaction
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    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.

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    Features
    1 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.
    2 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.
    3 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.
    4 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
    Q What is the maximum operating pressure and temperature range for the 108U mechanical seal?
    The 108U mechanical seal supports a maximum operating pressure of 0.8 MPa and an operating temperature range from -20°C to 120°C, making it suitable for a wide range of industrial pump applications.
    Q 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, universal compatibility, and full interchangeability with standard pump designs worldwide.
    Q What shaft diameter range is compatible with the 108U mechanical seal?
    The 108U mechanical seal is compatible with shaft diameters ranging from 35 mm to 70 mm, and operates at rotational speeds not exceeding 3000 r/min, covering most standard centrifugal pump configurations.
    Q Why is it important to check pump shaft rotation direction when installing the 108U seal?
    The 108U uses a hook spring drive to transmit torque, which fixes the seal's rotational direction. Installing it in the wrong rotational direction can cause the spring to unwind, resulting in seal failure and potential leakage. Always confirm shaft rotation before installation.
    Q Is the 108U mechanical seal suitable for media containing fine particles?
    Yes. The single large-spring design provides better resistance to clogging than multi-spring alternatives, making the 108U particularly well-suited for pumping media that contains fine solid particles or fibrous materials.
    Q 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 fibres, water treatment, and chemical transfer industries, thanks to its outstanding corrosion resistance and reliable sealing performance in aggressive media.