1527 Single Spring Mechanical Seal

The 1527 Single Spring Mechanical Seal uses a compact O-ring sealing arrangement with a single coil spring. The design is suited to buyers who need a clearly defined component seal with a broad metric size range and a complete set of installation dimensions.

For replacement work, selecting only by shaft diameter can lead to a mismatch. The 1527 size table provides d, D3, D2, D1, d1, L1, L2 and L3, allowing the rotating assembly and stationary-seat dimensions to be checked against the existing seal or equipment drawing before production.

Key Features

• Single coil spring design with O-ring secondary sealing.
• Available shaft diameter range from 18mm to 100mm.
• Operating temperature range from -20°C to +180°C.
• Maximum operating pressure: 1MPa.
• Maximum sliding speed: 15m/s.
• Multiple material-code options for different operating requirements.
• Detailed dimensional data for replacement and OEM matching.
• Qixing supports matching based on shaft size, dimensions, samples and drawings.

Technical Specifications

Material Selection

The 1527 series is available with several material-code options. Because the correct combination depends on the actual working medium, temperature and operating conditions, material selection should be confirmed together with the application data rather than by model number alone.

Available material codes: Q2 / U2 / B / V1 / P / E / V / F / G.

How to Select the Correct 1527 Size

• Confirm the shaft diameter d.
• Check D3, D2 and D1 against the available radial installation space.
• Check d1 when matching the seat and surrounding structure.
• Compare L1, L2 and L3 with the existing seal or equipment drawing.
• Provide the operating temperature, pressure and speed.
• For replacement orders, send clear photos or an old sample together with the dimensions.

Replacement Matching

The 1527 is commonly selected in maintenance and replacement projects where the old seal must be matched by both model and dimensions. A reliable match should therefore confirm the shaft size, the stationary-seat dimensions and the axial installation length before an order is finalized.

Application Considerations

For each project, the handled medium and actual operating conditions should be confirmed before the material combination is finalized. This is especially important when the seal is used close to the upper temperature, pressure or speed limits, or when the process fluid may affect the seal faces or secondary sealing elements.

Why Choose Qixing

Qixing, the mechanical seal brand of Ningbo Yade Fluid Connector Co., Ltd, manufactures and supplies mechanical seals for industrial buyers. For the 1527 series, our factory can review standard size requirements as well as replacement inquiries based on dimensions, old samples and equipment drawings.

If the original model marking is incomplete, send the shaft diameter and the available D/L dimensions. This gives Qixing a clearer basis for product matching before production.

Frequently Asked Questions

What size range is available for the 1527 Single Spring Mechanical Seal?

The listed shaft-size range is 18mm to 100mm.

What is the operating temperature range?

The 1527 operates from -20°C to +180°C.

What is the maximum operating pressure?

The maximum operating pressure is 1 MPa.

What is the maximum sliding speed?

The maximum sliding speed is 15m/s.

Which dimensions should be checked for a replacement?

Check d, D3, D2, D1, d1, L1, L2 and L3 against the existing seal or equipment drawing.

Can I select the seal only by shaft diameter?

Shaft diameter is the starting point, but the remaining radial and axial dimensions should also be confirmed.

What material options are available?

Available material selections are identified by the codes Q2, U2, B, V1, P, E, V, F and G.

Can Qixing support replacement matching from an old seal?

Yes. Photos, samples and dimensional drawings can be reviewed together with the operating data.

What information should I provide for a quotation?

Provide shaft size, key dimensions, operating temperature, pressure, speed and any available sample or drawing information.

Can the 1527 be customized?

Qixing can review customized or replacement requirements based on the requested dimensions and operating conditions.

1527 Dimension Table

Dimensions are in millimeters. Confirm critical dimensions against the existing installation before production.