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

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High Pressure Grundfos Pump Mechanical Seal CR CRN Multistage Pump

Name: High Pressure Grundfos Pump Mechanical Seal CR CRN Multistage Pump
Brand: Jiaxing Burgmann Mechanical Seal Co., Ltd. Jiashan King Kong Branch
SKU: GLF-2
Price: 16.00 USD
Availability: InStock

Product Details

Place of Origin: Zhejiang, China

Brand Name: JG

Certification: ISO9001, FDA

Model Number: GLF-2

Payment & Shipping Terms

Minimum Order Quantity: 10 Pieces

Price: USD 3-30 / Piece

Packaging Details: Carton Packaging with Foam Protection

Delivery Time: 7-15 Working Days

Payment Terms: T/T,Western Union,

Supply Ability: 10,000 Pieces / Month

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Specifications

Description

Specifications

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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              3MPa High Pressure Grundfos Pump Seal, CR CRN Multistage Pump Seal, 12mm 16mm Pump Seal Replacement
                                                  

Product Name:	3MPa High Pressure Grundfos Pump Mechanical Seal	Shaft Diameter:	12 Mm / 16 Mm
Application:	CR CRN Multistage Centrifugal Pump	Max Working Pressure:	3 MPa
Friction Pair Material:	Silicon Carbide / Tungsten Carbide / Carbon	Temperature Range:	-20°C ~ 180°C
O-Ring Material:	EPDM / NBR / FKM / AFLAS / PTFE	Compatibility:	100% Grundfos OEM Dimensions

Product Name:	3MPa High Pressure Grundfos Pump Mechanical Seal
Shaft Diameter:	12 Mm / 16 Mm
Application:	CR CRN Multistage Centrifugal Pump
Max Working Pressure:	3 MPa
Friction Pair Material:	Silicon Carbide / Tungsten Carbide / Carbon
Temperature Range:	-20°C ~ 180°C
O-Ring Material:	EPDM / NBR / FKM / AFLAS / PTFE
Compatibility:	100% Grundfos OEM Dimensions

Description

High Pressure Grundfos Pump Mechanical Seal CR CRN Multistage Pump

The 3MPa high pressure Grundfos pump mechanical seal is a precision-engineered direct replacement designed for Grundfos CR and CRN multistage centrifugal pumps with 12 mm and 16 mm shafts. It matches Grundfos OEM dimensions exactly, which means the Grundfos pump mechanical seal drops into the existing stuffing box without any pump modification, saving downtime and maintenance cost.

Rated for working pressure up to 3MPa and media temperature from -20°C to 180°C, this high pressure Grundfos pump mechanical seal is built for boosting systems, water supply, irrigation, HVAC and industrial circulation duties where standard seals lose stability under pressure surges.

Reliability comes from material engineering. The 3MPa high pressure rating is achieved through a balanced seal face design that keeps hydraulic load stable under pressure surges. The spring unit is isolated from the pumped media, preventing sticking or clogging even in poor lubrication conditions.

Technical Parameters

Parameter	Value
Shaft Diameter	12 mm / 16 mm
Working Pressure	up to 3 MPa
Media Temperature	-20 °C ~ 180 °C
Sliding Velocity	≤ 15 m/s
Rotary Ring	Carbon / Silicon Carbide / Tungsten Carbide / Ceramic
Stationary Ring	Carbon / Silicon Carbide / Tungsten Carbide / Ceramic
O-Ring	EPDM / NBR / AFLAS / Kalrez / PTFE
Spring and Metal Parts	SUS304 / SUS316 / Hastellow C / 904L
Seal Type	Single Spring, O-Ring Type
Compatible Pumps	Grundfos CR, CRN, CRK, CH, CM, NBG, MTH, HPK series

Applications

Grundfos CR / CRN multistage centrifugal pumps
Water supply and pressure boosting systems
Irrigation and agricultural pumping
HVAC circulation and chilled water systems
Industrial cleaning, reverse osmosis and filtration

Key Advantages

100% compatible with Grundfos OEM dimensions and specifications
3MPa high pressure rating for demanding multistage pump duties
Easy replacement without dismantling the pump body
Spring unit isolated from media, no sticking or clogging
Seal face locked by square pin for safe, fracture-free operation
OEM/ODM and cross-reference service for Grundfos part numbers

Product Q&A

Is this Grundfos pump mechanical seal a true drop-in replacement for OEM parts?

Yes. The Grundfos pump mechanical seal is manufactured to the exact OEM dimensions for Grundfos CR and CRN pumps with 12 mm and 16 mm shafts. Installation requires no adapters or pump modification, and the seal can be fitted without dismantling the pump body, which reduces maintenance time to a minimum.

Can this seal really operate at 3MPa working pressure?

Yes. The balanced design keeps the hydraulic face load stable under high pressure, preventing face distortion and leakage in multistage pump systems where pressure surges are common. The 3MPa high pressure rating covers CR, CRN and other Grundfos pump applications that exceed the 0.6MPa limit of standard seals.

Which materials should I choose for my pumped medium?

For clean water and mild media, carbon versus silicon carbide with NBR or EPDM O-rings is the economical standard choice. For corrosive or high-temperature media, we recommend silicon carbide versus silicon carbide or tungsten carbide faces with AFLAS, Kalrez or PTFE O-rings and SUS316 or Hastelloy C metal parts.

Do you provide cross-reference service for Grundfos part numbers?

Yes. We offer cross-reference service for Grundfos pump mechanical seal part numbers and can supply emergency replacement seals quickly. OEM/ODM customization is also available, including special shaft sizes, material upgrades for harsh applications and custom packaging.

As a sealing factory established in 1992, we supply this 3MPa high pressure Grundfos pump mechanical seal to pump distributors, maintenance contractors and water treatment projects worldwide. Each seal is backed by a complete quality management system, and samples are available before mass production.

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