Please click on the following mechanical seals catagories,view our detailed product information.
1. Auto Cooling Pump Mechanical Seal
2. Mechanical Seals for Sanitary Pumps
3. Flygt Pumps Mechanical Seals
4. Metal Bellow Mechanical Seals
5. PTFE Wedge Mechanical Seals
6. O-ring Mechanical Seals
7. Elastomer Bellow Mechanical Seals
8. Cartridge Mechanical Seals
John double mechanical seal for ksb pump
John double mechanical seal for ksb pump
1.Stationary Ring: Carbon/SIC/TC;
2. Rotary Ring: SIC/TC;
3. Retainer: SUS304/SUS316;
4. Spring: SUS304/SUS316;
5. O-Ring: NBR/EPDM/VITON/PTFE
Water,oil and other weak corrosive medium
Rotating equipment,pumps,mixers,agitators and compressors
1.Wear resistant products
2.Superior sealing effects
5.Strong QC and R&D teams to assure high quality products
6.Reasonable factory price
7.Small order quantity is welcomed
8.Can help you develop the design based on your idea
9.Customized specifications are welcome
10.OEM and ODM orders are warmly welcome
Tungsten Carbide Sealing ring
Coefficient of Heat Expansion(10-6/°C)
SIC Sealing ring
--- Product Display
This mechanical seal can be changed into double face installment with one spring
--- Main characteristics
- Mediums to be sealed: Water,oil and other moderate corrosive liquid;
- Pressure in the sealed chamber: ≤ 0.6MPa;
- Temperature in the sealed chamber: -20~+150°C;
- Linear speed: ≤ 10m/s.
--- Fixing and Applying Directions of Mechanical Seals
1) Select Appropriate mechanical seal to match the materials according to work conditions and host machine equipment.
2) The radial acting deviation for the shaft(shaft sleeve) of the installed mechanical seal shall be 0.04mm by maximum
while the axial movement value of the rotor shall be no more than 0.1mm.
3) The seal cover (or shaft cover) of the stationary ring of the installed mechanical seals,the vertical degree of the seal
face should be 0.04mm by maximum.
4) When installing the mechanical seals,the shaft(shaft sleeve),seal chamber,seal face as well as the mechanical seal
must be cleaned in order to keep from any medium to sealing part.
5) When conveying medium of over high or low temperature,with medium which are easy catch fire,easy for explosion.
Related mechanical seal standards must be referred to take appropriate measures such as quench,rinsing,coolong and
6) Appropricate lubrication must be choosen when mechanical seal is installed.The installment size of the mechanical
seal must be guaranteed to the installment instruction.
7) Before the machine starts running,the hermetic compartment shall be full of medium and well lubricated.Dry friction
which may lead to the damage of the air-tightness is strict forbidden.
8) The size deviation and surface roughness of mechanical seal installment part is given as follow:
Size deviation and surface roughness for setting up the mechanical seals.
--- Packaging way
1.Copy paper + Carton box;
2.As per costomer's requirement to design and produce.
--- Shipping policy
1>By express suggested by DHL,UPS,EMS,TNT or Fedex;
2>By air,by sea and by express are all available.
--- Shipping detail
10-35 days,according to orders quantity of mechanical seals.
--- Why choose us?
1.We are specialized manufacturer of mechanical seals, best production capability, best quality control,
best service and competitive price;
2.100% quality control before shipment;
3.Well-trained sales can give you professional suggestions on product;
4.Customized mechanical seals can be manufactured according to your samples or drawings;
5.Trial order and small order are accepted,but they are not for free;
6.Payment terms of T/T,Western Union,Escrow are welcome;
7.We will listen to your feedback timely ;
8.Our aim is to make every customer satisfied and we can be WIN-WIN!
Ningbo Runfor Sealing Technology Co.,Ltd (Ningbo Yadong Chemical Industry Co.,Ltd) established in 1991,
covers the area of 7000 square meters,construction area of 10000 square meters,consisting of 70 employees,is a
professional enterprise in researching,designing,producing and selling of mechanical seals,tungsten carbide and PTFE
products. We Supply TC sliding bearing,filling-PTFE& PTFE products and kinds of complete mechanical seal included
cartridge type,rubber bellow type and O-ring type,can apply to different working conditions.According to DIN24960 and
GB6556-94 standards to design for the mechanical seals.
Welcome to our company for visiting and talk over business!
--- Pictures for our company
--- Our certificates
--- Production line
1.Q: What is the advantage of your company ?
A: We have a professional technical team, to provide customers from the full range of services.Including the design
for special circumstance and product after-sales service.
2.Q:Are you a factory or trading company? A: We are an extremely factory.
3.Q:Where is your factory located? How can I visit there? A: Our factory is located in Ningbo City, China.You can fly to Ningbo airport directly.Warmly welcome to visit our factory!
4.Q: Can I try to get a SAMPLE before the order?
A: We are honored to offer you samples.
Welcome to contact with us right now if you are interested in us!