104U Cartridge Mechanical Seal

The technical drawing shows an integrated seal assembly with a separate stationary seat, a flushing/cooling port, and an anti-rotation pin location. For replacement or new-equipment selection, the shaft size and installation dimensions should be checked together with the actual medium and operating conditions.

Key Features

• 104U cartridge mechanical seal design for simplified assembly matching.
• Available shaft diameter range: 16-120 mm.
• Listed operating temperature: -20°C to +180°C.
• Listed operating pressure: 0-1.0 MPa.
• Listed rotational speed: up to 3000 r/min.
• technical drawing includes a flushing/cooling port.
• technical drawing identifies an anti-rotation pin position, marked as self-provided in the product specifications.
• Wide dimensional range for industrial replacement and equipment matching.
• Qixing can support customized selection based on shaft size, dimensions, medium and operating data.

Technical Specifications

Applications

The product specifications give a broad medium description. The Chinese text lists water, seawater, acid, alkali and benzene, while the English note also refers to sewage, seawater and neutral corrosive liquid with granules. Because the two language lines are not fully aligned, the actual fluid composition should be confirmed before final material selection.

• Water and seawater service
• Sewage or liquids containing granules, where compatible with the selected seal configuration
• Acid or alkali service after material compatibility confirmation
• Other industrial liquids within the listed temperature, pressure and speed range

Design and Selection Considerations

The 104U should be selected by more than the model number alone. The dimensional table includes d, D3, D4, D6, D7, D8, Do, L, L3, L4, L5, L6, L7 and L8. For replacement work, compare these dimensions with the existing installation before confirming the size.

The technical drawing shows a flushing/cooling connection. If the equipment uses external flushing or cooling, confirm the port arrangement and surrounding installation space during selection. The drawing also marks an anti-rotation pin position and notes that the pin is self-provided.

The product specifications list a maximum speed of 3000 r/min, temperature up to 180°C and pressure up to 1.0 MPa. Actual suitability can depend on the fluid, material combination, solids content and equipment conditions, so applications near these limits should be reviewed with full operating data.

Replacement and Procurement Matching

For a replacement 104U Cartridge Mechanical Seal, send Qixing the existing model reference, shaft diameter and available installation dimensions. Photos of the cartridge assembly, stationary seat, flushing connection and equipment installation can also help with model matching.

Model similarity does not automatically guarantee direct interchangeability. A more reliable match should compare the critical dimensions and operating conditions shown on this page before production or shipment.

How to Order / Selection Information

• Required shaft diameter (d).
• Existing 104U size or old seal model, if available.
• Working medium and whether solids/granules are present.
• Operating temperature.
• Operating pressure.
• Rotational speed.
• Key installation dimensions from the existing seal or equipment.
• Flushing/cooling connection requirements.
• Photos or drawings for replacement matching when the original model is uncertain.

Why Choose Qixing as Your 104U Manufacturer

Qixing, the mechanical seal brand of Ningbo Yade Fluid Connector Co.,Ltd, supplies the 104U Cartridge Mechanical Seal from a manufacturer and factory perspective. We can support customized product matching by reviewing shaft size, dimensional requirements, medium and operating conditions before quotation.

For OEM, replacement and industrial sourcing projects, Qixing can work from model references, drawings, dimensions or existing-sample information to help define the required 104U configuration. Specific production capacity, certification and delivery requirements can be confirmed separately according to the project.

FAQ 

What sizes are available for the 104U Cartridge Mechanical Seal?

The product specifications list shaft sizes from 16 mm to 120 mm.

What is the operating temperature range?

The product specifications list a medium temperature range of -20°C to +180°C.

What pressure can the 104U handle?

The operating pressure range is 0 to 1.0 MPa.

What is the maximum rotational speed?

The product specifications list a maximum speed of 3000 r/min.

Does the 104U include a flushing or cooling connection?

The technical drawing shows a flushing/cooling port. The required connection arrangement should be confirmed with the equipment installation.

What media are listed for the 104U?

Applicable media include water, seawater, acid, alkali and benzene, as well as sewage/seawater and neutral corrosive liquids containing granules. Confirm material compatibility for the actual fluid and operating conditions.

Can Qixing manufacture a replacement 104U based on my old seal?

Qixing can review the old seal model, dimensions, photos and operating data for matching. Dimensional confirmation is recommended before treating a replacement as interchangeable.

What dimensions should I provide for a replacement?

Start with shaft diameter d and, where possible, provide D3, D4, D6, D7, D8, Do, L, L3, L4, L5, L6, L7 and L8.

Is the anti-rotation pin supplied with the seal?

The technical drawing marks the anti-rotation pin as self-provided. Confirm the final supply scope when ordering.

Can Qixing provide customized 104U seals?

Qixing can support customized selection and matching based on dimensions, medium and operating requirements. Any non-standard design should be confirmed case by case.

104U Dimension Table

Dimensions are shown in millimeters. Model names below use the Qixing-facing 104U designation.