John Crane 502 Water Pump Mechanical Seal Unbalanced 14mm 100mm

Place of Origin Guangzhou, China
Brand Name Bogeman
Certification ISO SGS
Model Number 502-18mm-100mm
Minimum Order Quantity 1/PCS
Price US $ 5.8-158/PCS
Packaging Details Carton
Delivery Time 2/day
Payment Terms L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability 6000/month

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Product Details
Model 502 Speciflcation Shaft Hole 14-100mm
Material CAR CER NBR EPDM Usage Unbalanced
Traemark Bergman Origin Guangzhou, China
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Product Description
John Crane 502 Water Pump Mechanical Seal Unbalanced 14mm 100mm
Mechanical Seal John Crane 502 Water Pump Seal Mechanical Seal
Model NO.
Bergman, Nuetral or Customised
Transport Package
Bergman, Nuetral or Customised
HS Code

Product Description

Guangzhou Bogeman Mechanical Seal Co., Ltd.


Product Description

Our mechanical seal model 502 can replace AESSEAL B07S and CRANE 502 ,which is widely used for industrial pumps. BO seat and BP seat are usually used for 502 type. The normal material combination include resin carbon/ceramic/nbr/ss304,resin carbon/tc/nbr/ss304,sic/sic/nbr/ss304 ,tc/tc/nbr/ss304 and so on. we also can make changes as customers'requirement or totally design a new type of mechanical seal to meet clients'needs.

BGM 502
Operating Limits:

1. Pressure: ≤4MPa
2. Speed: ≤13m/s
3. Temperature: -30ºC~+200ºC

Rotary Ring (Carbon/SiC/TC)
Stationary Ring (99%Ceramic/SiC/TC)
Secondary SeaI (/NBR/EPDM)
Spring & Other Parts (SUS304/SUS316)

The standard seat for the BGM 502 seal is the BO seat (DIN24960). Alternative seats can also be used, such as the BP and BC seats.


Seal size
d3 d6 d7 l1k l4
12 22.6 18.5 22.5 32.5 12.0
14 24 21 25 35.0 12.0
16 26 23 27 35.0 12.0
18 32 27 33 37.5 13.5
20 34 29 35 37.5 13.5
22 36 31 37 37.5 13.5
24 38 33 39 40.0 13.3
25 39 34 40 40.0 13.0
28 42 37 43 42.5 12.5
30 44 39 45 42.5 12.0
32 46 42 48 42.5 12.0
33 46 42 48 42.5 12.0
35 49 44 50 42.5 12.0
38 54 49 56 45.0 13.0
40 56 51 58 45.0 13.0
43 59 54 61 45.0 13.0
45 61 56 63 45.0 13.0
48 64 59 66 45.0 13.0
50 66 62 70 47.5 13.3
55 71 67 75 47.5 13.3
60 80 72 80 52.5 13.3
65 85 77 85 52.5 13.3
70 89 83 92 60.0 14.5
75 96 88 97 60.0 14.5
80 104 95 105 60.0 15.0
85 108 100 110 60.0 15.0
90 114 105 115 65.0 15.0
95 118 110 120 65.0 15.0
100 124 115 125 65.0 15.0

Professional Packing for Tents Transportation
Experienced Shipping Service for Exporting 


1. We can check the shipping price for you, and recommend shipping agents to you.
2. You could always arrange the shipping by your own agents.
3. We usually use Ningbo port as our export port, but if you want to use other sea ports, we can also arrange it for you (Guangzhou, Shenzhen, etc. We can negotiate on the details of cost and operation)


Your convenience is our main conern

1. We can help you to book hotel and tickets to make your visiting to us more convenient.
2. Car service, if you want to visit us and are near Shanghai city, we can send a car to pick you up so you can come to visit Bergman easily.
3. After sale service is always available, we maintain very good reputation all over the world, and we offer after sale service to our clients, like installation instructions, replacement of flaw parts, upgrade of tents, renew tent parts, tent warehousing guidance, etc.


John Crane 502 Water Pump Mechanical Seal Unbalanced 14mm 100mm 0John Crane 502 Water Pump Mechanical Seal Unbalanced 14mm 100mm 1John Crane 502 Water Pump Mechanical Seal Unbalanced 14mm 100mm 2


We are a manufacturer. All seals have bulk inventory and can be shipped to you quickly. We promise to ship you in small quantities within 3 days.Advanced technology, excellence, replace original


1. Different models of mechanicals seals for a wide variety of Grundfos® pumps, among them: CR(N), NB, NK, CLM, LP, TP, etc. Available in diverse combinations of materials and different diameters: 12, 16, 22, 28, 33, etc. Also mechanical seals for Sarlin®. Division of waster pumps. Available in various materials: silicon-graphite carbide, silicon carbide-silicon carbide; combined with EPDM and FKM elastomers.

2. Mechanical seals are available for different references Gorman-Rupp® pumps. Special models for the transfer of clean water, sewage, oil industry, agriculture and others.

3. Mechanical seals for Fristam® pumps. Wide range of models and materials in the most standard diameters: 22,30 and 35 mm. Different assembly possibilities for the most well-known pump models: FP, FL and FT.

4. Broad range of mechanical seals compatible with Flygt® and Grindex® waste water pumps. These mechanical seals are characterized by their easy and fast installation, without having to make any modification to the pump. Manufactured in stainless steel and in solid tungsten carbide. Special tools are not necessary for their installation.

5. Mechanical seals for EMU® pumps. They get two static faces and one rotating face. We can supply the complete seal or spare faces.

6. Different designs of mechanical seals for Ebara® pumps, single and double seals in combinations carbide-silicon carbide and graphite-aluminium oxide.

7. Mechanical seals for all types of Calpeda® pumps: centrifugal pumps, multistage, submersible. Different models of mechanical seals in a wide range of materials.

8. Mechanical seals compatible for APV® pumps, among them: Puma, ZMA, ZMB, ZMD, ZMS, ZMH, ZMK. Rosista® and Pasilac®, W and W+. Some designs with wave spring like the special seals for APV Howard® pumps and Crepaco Clean Line®. All of them have been manufactured in materials suitable for working with fluids such as juices, milk and drinks in general.

9. Allweiler, Simple design of mechanical seals simple but with special measures for this type of pump.

10. Different models of mechanical seals compatible for Alfa-Laval® pumps series CM, FM, MR, LKH,GM and ALC. Also the models for the range of lobular SSP and SR pumps. Mechanical seals in different combination of materials tungsten carbide, silicon carbide, graphite; combined with different types of elastomers: NBR, EPDM and FKM.

11. Mechanical seals for ABS® submergible pumps specific wastewater treatment. Different models of mechanical seal available: oil chamber mechanical seal and water mechanical seal.


John Crane 502 Water Pump Mechanical Seal Unbalanced 14mm 100mm 3John Crane 502 Water Pump Mechanical Seal Unbalanced 14mm 100mm 4


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 face
should be 0.04mm by maximum.
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 filtrating.
6. 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.