MachineU > China Products > Tools & Hardware > Hardware > Seals
GLF-SA Mechanical Seal Grundfos CM CRK Pump Seal
GLF-SA Mechanical Seal Grundfos CM CRK Pump Seal
Specifications
Temperature Range :
-20°C ~ 180°C
Sliding Velocity :
≤15 m/s
Application :
Grundfos CM CRK Pump
Place of Origin :
Zhejiang, China
Max Working Pressure :
3 MPa
Packaging Details :
Carton Packaging with Foam Protection
Payment Terms :
T/T,Western Union,MoneyGram
Friction Pair Material :
Carbon / Silicon Carbide / Tungsten Carbide
Delivery Time :
7-15 Working Days
Certification :
ISO9001
MOQ :
10 Pieces
Product Name :
GLF-SA Mechanical Seal
Seal Type :
Unbalanced, O-Ring Type, Long Spring
Shaft Diameter :
12 mm / 16 mm
Model Number :
GLF-SA
Brand Name :
JG
Price :
USD 3-25 / Piece
Supply Ability :
10,000 Pieces / Month
Description
GLF-SA Mechanical Seal Grundfos CM CRK Pump Seal

The GLF-SA mechanical seal is a long spring O-ring type shaft seal designed for Grundfos CM horizontal pumps and CRK multistage pumps with 12 mm and 16 mm shafts. It fits Grundfos CM 1/3/5, CM 10/15/25, CRK2, CRK4, CRK8 and CRK16 models, making this seal a direct replacement that restores original pump performance without adaptation.

The long spring O-ring construction features a rigid torque transmission design required for hard material pairings such as WC/WC or SiC/SiC, even where lubrication is poor, and the unbalanced seal geometry keeps installation simple and reliable.

The seal operates at pressures up to 3MPa, media temperatures from -20°C to 180°C and sliding velocities up to 15 m/s, covering both standard CM pump duty and demanding CRK multistage applications. The rotary and stationary rings can be selected from carbon, silicon carbide and tungsten carbide, with O-rings in EPDM, NBR, AFLAS, Kalrez or PTFE and springs and metal parts in SUS304, SUS316 or Hastelloy C. For high-temperature service we recommend heat-resistant elastomer compounds. Every GLF-SA mechanical seal is 100% pressure-tested before shipment and backed by our ISO9001 quality management system.

Technical Parameters
Parameter Value
Model GLF-SA (GLF / GLF-2 compatible)
Shaft Diameter 12 mm / 16 mm
Working Pressure up to 3 MPa
Media Temperature -20 °C ~ 180 °C
Sliding Velocity ≤ 15 m/s
Seal Type Unbalanced, O-Ring Type, Long Spring
Fits Pumps Grundfos CM 1/3/5, CM 10/15/25, CRK2/4/8/16
Rotary / Stationary Ring Carbon / Silicon Carbide / Tungsten Carbide
O-Ring EPDM / NBR / AFLAS / Kalrez / PTFE
Spring and Metal Parts SUS304 / SUS316 / Hastelloy C
Applications
  • Grundfos CM horizontal and CRK multistage pumps
  • Water supply and pressure boosting systems
  • Irrigation and agricultural pumping
  • HVAC circulation and industrial water systems
Key Advantages
  • Direct replacement for Grundfos CM and CRK pumps, no pump adaptation needed
  • Long spring O-ring design with rigid torque transmission for hard face pairings
  • Spring unit averted from the product, no sticking or clogging
  • Suitable for pressure reversals and vacuum operation
  • Small installation sizes, best for conversions
  • OEM/ODM service and cross-reference for Grundfos part numbers
Product Q&A
Q1: Which Grundfos pumps does the GLF-SA mechanical seal fit?
A1: The GLF-SA fits Grundfos CM horizontal pumps such as CM 1/3/5 and CM 10/15/25, and CRK multistage pumps including CRK2, CRK4, CRK8 and CRK16. Only two shaft sizes are used across this range, 12 mm and 16 mm, which keeps the GLF-SA mechanical seal simple to stock and quick to fit.
Q2: What is the advantage of the long spring O-ring type design?
A2: The long spring provides stable axial load over the full wear range of the seal faces, while the O-ring secondary seal gives a rigid torque transmission structure. This combination is required for hard material pairings such as tungsten carbide against tungsten carbide or silicon carbide against silicon carbide, which perform reliably even where lubrication is poor.
Q3: What are the operating limits of this GLF-SA seal?
A3: The GLF-SA mechanical seal handles pressures up to 3MPa, media temperatures from -20°C to 180°C and sliding velocities up to 15 m/s. For high-temperature media we recommend selecting heat-resistant elastomers such as AFLAS, Kalrez or PTFE for the elastomers.
Q4: Can I get a customized GLF-SA mechanical seal for my pump?
A4: Yes. We offer OEM/ODM production of the GLF-SA mechanical seal, including custom face materials, elastomer options, special metal parts and private label packaging. Cross-reference service for OEM part numbers is available, and samples can be supplied before mass production.
Send your message to this supplier
Send Now

GLF-SA Mechanical Seal Grundfos CM CRK Pump Seal

Ask Latest Price
Product Detail
Temperature Range :
-20°C ~ 180°C
Sliding Velocity :
≤15 m/s
Application :
Grundfos CM CRK Pump
Place of Origin :
Zhejiang, China
Max Working Pressure :
3 MPa
Packaging Details :
Carton Packaging with Foam Protection
Contact Supplier
GLF-SA Mechanical Seal Grundfos CM CRK Pump Seal

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

Verified Supplier
9 Years
zhejiang, jiaxing
Since 1992
Business Type :
Manufacturer, Exporter, Trading Company, Seller
Main Products :
Industrial Mechanical Seals, Metal Bellows Seal, Cartridge Mechanical Seal
Total Annual :
10milion-15milion
Employee Number :
80~100
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Mechanical Seal Replacement
MachineU China Products Tools & Hardware Hardware Seals
Contact Supplier
Submit Requirement