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Single Big Spring Water Pump Seal With Solid Sic Less Leak

Categories	Single Spring Mechanical Seal
Brand Name:	JG
Certification:	FDA or ISO9001；2008
Place of Origin:	Zhejiang, China
MOQ:	5PCS
Price:	USD
Payment Terms:	T/T,Western Union,MoneyGram
Supply Ability:	5000PCS
Delivery Time:	5~10DAYS
Packaging Details:	white box
Product name:	Single Big Spring Water Pump Seal
Pressure:	≤1Mpa
Application:	Big Spring Water Pump Seal
Temperature:	-20~180℃
Linear Speed:	≤15m/s
Axial Movement:	±1.0mm

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Company Info.

Jiaxing Burgmann Mechanical Seal Co., Ltd. Jiashan King Kong Branch

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Product Details
Company Profile

Single Big Spring Water Pump Seal With Solid Sic Less Leak

This single big spring water pump seal utilizes a robust, heavy-duty helical spring to provide a consistent axial closing force on the seal faces. The primary sealing rings are constructed from monolithic, solid silicon carbide (SiC) on both the rotating and stationary faces. This material combination offers exceptional resistance to abrasive particles, providing superior wear characteristics and extended service life in harsh water applications, including those with suspended solids. The simple, large-spring design enhances stability and reduces the risk of clogging in dirty water environments. The exceptional hardness and low friction coefficient of the solid SiC faces minimize heat generation and wear, directly resulting in a significantly lower leak rate compared to seals with carbon/graphite or reaction-bonded SiC faces. This design is engineered for reliability in general industrial water, cooling, and low-pressure transfer pumps.

Features

For plain shafts
Single seal
Unbalanced
Conical spring rotating
Dependent on direction of rotation

Advantages

Economical seal solution
No damage of the shaft by set screws
Short installation length possible (G16)

Operating range

Temperature:

–20 °C ~ 140 °C (–4 °F ~ 355 °F)

Pressure:

up to 145 psi(g)/10 bar(g)

Speed:

15m/s (3000fpm)

Axial movement:

±1.0 mm

Recommended applications

Water and waste water technology
Building services engineering
Water pumps
Heating circulation pumps

Materials

Seal face:

Carbon graphite resin impregnated

Seat G9:

Silicon carbide, Special cast CrMo steel, Aluminium oxide

Product variants

M2

Rotating unit M2 with seat G4 or G16 (shorter installation length)

Seal face: Carbon graphite resin impregnated

Seat G4: Silicon carbide, Special cast CrMo steel

Seat G16: Silicon carbide, Special cast CrMo steel, Aluminium oxide

M2N4

Rotating unit M2 with seat G6

Seal face: Carbon graphite resin impregnated

Seat G6: Silicon carbide, Special cast CrMo steel

Frequently Asked Questions

Q1: What is the key material advantage of solid silicon carbide (SiC) seal faces in abrasive water applications?

A1: Solid SiC possesses extreme hardness (Knoop 2600 kg/mm²) and high thermal conductivity, which provides exceptional resistance to abrasive wear. This minimizes face erosion and maintains face flatness, directly leading to a lower and more stable leak rate over the seal's lifespan compared to softer materials like carbon graphite.

Q2: How does the single spring design impact maintenance and serviceability?

A2: The simplicity of the single large spring design offers improved resistance to clogging from silt or debris in raw water. It also simplifies inspection and handling during maintenance procedures, as there are no multiple small springs to corrode or lose.

Q3: What is the primary limitation of a single big spring design regarding operational speed?

A3: The primary limitation is centrifugal unweighting. At high rotational speeds, centrifugal forces can act on the large spring, reducing its effective closing force on the seal faces. This makes the design generally unsuitable for very high-speed applications, where a multi-spring design is preferred.

Q4: Why is this seal type particularly suited for raw water and cooling water services?

A4: Its suitability stems from the combination of the clog-resistant single spring and the highly abrasion-resistant solid SiC faces. This configuration reliably handles suspended solids without the failure modes associated with multi-spring seals (clogging) or carbon faces (erosive wear).

Single Big Spring Water Pump Seal With Solid Sic Less Leak

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