John Crane 4620 Dual mechanical shaft seal replacement cartridge
pump seal
Features:
1. Dual seal arrangement — incorporates an elastomer O-ring as the
dynamic secondary sealing member
2. Inboard primary and mating ring reverse balance design allows
for ID or OD pressurization, permitting the dual seal to operate as
an unpressurized tandem or pressurized double seal
3. Pumping ring is standard — no extra cost
4. No extra inventory to carry
5. Flow-optimized design with integral pumping ring arrangement
6. Increased cooling flow and face lubrication, greatly extending
seal life
7. Cartridge design with factory-preset and pressure-tested
assembly
Operating range:
Temperature: -30℃-205℃
Speed: ≦20M/S
Pressure: ≦1.5Mpa
Size: 24mm-70mm / 1”-2.750”
Material:
Rotary Face:CAR/SIC/TC
Stat Ring:SIC/TC
Recommended Applications:
Pulp and paper
Power generation
Water and wastewater
Food and beverage
Pharmaceutical
Chemical
Mining
Steel production
General industrial
Photo Drawing:
| Size/Inch | D4
Min Max | D5 | L1 | L2 | N
Min Max | M |
| 1.000 | 1.625 | 1.889 | 4.000 | 1.635 | 2.000 | 2.80 | 3.25 | 0.525 |
| 1.125 | 1.750 | 2.015 | 4.125 | 1.603 | 2.125 | 2.93 | 3.38 | 0.525 |
| 1.250 | 1.875 | 2.294 | 4.250 | 1.603 | 2.125 | 3.21 | 3.50 | 0.525 |
| 1.375 | 2.000 | 2.421 | 4.375 | 1.603 | 2.125 | 3.34 | 3.63 | 0.525 |
| 1.500 | 2.250 | 2.680 | 4.875 | 1.680 | 2.187 | 3.60 | 4.13 | 0.525 |
| 1.625 | 2.375 | 2.812 | 5.000 | 1.680 | 2.187 | 3.77 | 4.25 | 0.562 |
| 1.750 | 2.500 | 2.918 | 5.250 | 1.680 | 2.187 | 3.87 | 4.50 | 0.562 |
| 1.875 | 2.625 | 2.918 | 5.250 | 1.680 | 2.187 | 3.87 | 4.50 | 0.562 |
| 2.000 | 2.750 | 3.015 | 5.500 | 1.711 | 2.375 | 4.00 | 4.75 | 0.562 |
| 2.125 | 2.875 | 3.360 | 5.859 | 1.711 | 2.375 | 4.47 | 4.91 | 0.687 |
| 2.250 | 3.000 | 3.485 | 6.500 | 1.711 | 2.475 | 4.57 | 5.55 | 0.687 |
| 2.375 | 3.125 | 3.610 | 6.500 | 1.711 | 2.528 | 4.72 | 5.55 | 0.687 |
| 2.500 | 3.375 | 3.891 | 6.750 | 1.703 | 2.625 | 5.00 | 5.80 | 0.687 |
| 2.625 | 3.687 | 4.062 | 6.750 | 1.727 | 2.562 | 5.17 | 5.80 | 0.687 |
| 2.750 | 3.687 | 4.062 | 6.750 | 1.727 | 2.562 | 5.17 | 5.80 | 0.687 |
| Size/Metric | D4
Min Max | D5 | L1 | L2 | N
Min. Max. | M |
| 24 | 41.0 | 48.0 | 101.6 | 41.5 | 50.8 | 71 | 83 | 13.3 |
| 25 | 41.0 | 48.0 | 101.6 | 41.5 | 50.8 | 71 | 83 | 13.3 |
| 28 | 44.0 | 51.2 | 104.8 | 40.7 | 54.0 | 74 | 86 | 13.3 |
| 30 | 46.0 | 58.3 | 108.0 | 40.7 | 54.0 | 82 | 89 | 13.3 |
| 32 | 47.6 | 58.3 | 108.0 | 40.7 | 54.0 | 82 | 89 | 13.3 |
| 33 | 50.8 | 61.5 | 111.1 | 40.7 | 54.0 | 85 | 92 | 13.3 |
| 35 | 50.8 | 61.5 | 111.1 | 40.7 | 54.0 | 85 | 92 | 13.3 |
| 38 | 57.2 | 68.1 | 123.8 | 42.7 | 55.5 | 91 | 105 | 13.3 |
| 40 | 60.0 | 71.4 | 127.0 | 42.7 | 55.5 | 96 | 108 | 14.3 |
| 43 | 63.5 | 74.1 | 133.4 | 42.7 | 55.5 | 98 | 114 | 14.3 |
| 45 | 63.5 | 74.1 | 133.4 | 42.7 | 55.5 | 98 | 114 | 14.3 |
| 48 | 66.7 | 74.1 | 133.4 | 42.7 | 55.5 | 98 | 114 | 14.3 |
| 50 | 69.9 | 76.6 | 139.7 | 43.5 | 60.3 | 102 | 121 | 14.3 |
| 53 | 73.0 | 85.3 | 148.8 | 43.5 | 60.3 | 114 | 125 | 17.5 |
| 55 | 73.0 | 85.3 | 148.8 | 43.5 | 60.3 | 114 | 125 | 17.5 |
| 58 | 79.4 | 91.7 | 165.1 | 43.5 | 64.2 | 120 | 141 | 17.5 |
| 60 | 79.4 | 91.7 | 165.1 | 43.5 | 64.2 | 120 | 141 | 17.5 |
| 63 | 85.7 | 98.8 | 171.5 | 43.3 | 66.7 | 127 | 147 | 17.5 |
| 65 | 85.7 | 98.8 | 171.5 | 43.3 | 66.7 | 127 | 147 | 17.5 |
| 70 | 93.6 | 103.2 | 171.5 | 43.9 | 65.1 | 131 | 147 | 17.5 |
We supply---Spring pusher seals,Rubber bellow mechanical seals,PTFE
bellow mechanical seal,Metal Bellow Seals,Cartridge Seals,Mixer &
Agitator seals, Dry Gas Seals.Spare parts with material silicon
carbide, Tungsten carbide, Carbon ,Ceramic,rubber,O-rings and
stainless steel parts.
Delivery:
1. If the products we have in store, we will send it out ASAP after
receiving payment.
2. If the products which were customized, we will complete the
production within a specified period of time, and send it out the
first time.
3. Also we can send by your delivery acount if you want.
4. We have a variety of ways to send goods, usually DHL, Fedex,
TNT, UPS will be normal ways. If you require use of a courier,
please inform us in advance.
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
filtrating.
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.
