Compact Cartridge Seals

4610
Single

4620P
Dual

The Easiest Cartridge Seal Solution...Maximised!

4600 Series
4610
The Best Value...Easiest-to-Install
Single O-Ring Cartridge Seal

Optimised Running Face Design Nonclogging,

• Premium-grade carbon and silicon carbide Crest-to-Crest Wave Spring
are standard. • No small, easily clogged, and over-
• Robust pin drive gives positive torque compressed helical coil springs.
transmission. • Less prone to corrosion problems.
• Hydraulically balanced for optimal performance. • Uniform face loading.
• Face design optimised using proprietary
computer simulation program technology.

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Unique Centralising Ring Compact Cartridge Design

• No setting clips to be removed or lost. • Four-bolt gland for accurate seal setting.
• Accurately sets seal axially & radially. • Precise investment cast gland plate design.
• Helps prevent component damage from • Large flush connection drilling ensures
overcompression during seal installation. optimum flow and allows seal chamber
venting for horizontal and vertical applications.
• Factory preset and pressure tested assembly.
 4600 Series
Cartridge Seal Solution

High-quality, innovative design reduces

installation and maintenance costs for
general industrial applications
John Crane combines proven technologies for optimal performance.
The 4600 series cartridge seal is the complete affordable solution for liquid sealing
satisfaction in industrial applications.
Type 4600 series meets key industry pump standards, and is designed to permit use in rotating
shaft equipment including ANSI/DIN pumps, close-coupled pumps, vertical pumps, and similar
rotating shaft equipment.

The 4600 Series outperforms — in every way — all other seals in its class — without exception!
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Exceptionally reliable single (4610) or dual (4620P) mechanical seal for traditionally packed
equipment and other applications.
It reduces:
• Wasteful Leakage
• Costly Equipment Damage
• Inefficient Pump Downtime
• Time-Consuming Maintenance Problems

Installation is fast and fool-proof. The 4600 series design allows it to fit the most popular
metric and inch pumps without modification.

Key Markets
• Water & Wastewater
• Pulp & Paper
• Power Generation
• Chemical
• Food & Beverage
• Pharmaceutical
• Mining
• Steel Production
• General Industrial

The 4600 series cartridge seal is the

most affordable sealing solution
available. Low cost, ease of installation,
and long life are just a few of the
benefits you can expect when you
purchase a 4600 Series seal.

No measuring, no clips, no surprises... just affordable reliability

from the world's leading seal manufacturer.
 Maximum Pressure Limits
Single Type 4610 / Tandem Type 4620P* Double Type 4620P*
Barrier Fluid Inboard Seal
Process Pressure
Pressure** Internal Pressure Rating***
15 bar g (220 psig) 1-2 bar g (15 -30 psig) norm.
Up to 140mm / 5.625" : 15 bar g (220 psig)
15 bar g (220 psig) max.

* Barrier fluid pressure relative to seal chamber pressure (API Plan 52 or 53) determines usage of the cartridge. As a tandem, the buffer pressure is lower
than process pressure; or as a double, the barrier pressure is higher than process fluid pressure to be sealed.
** John Crane Engineering recommends barrier fluids having a viscosity less than 14cSt/65 SSU and fluid lubricity that is equal to or better than water at
40˚C. It is recommended that the barrier temperature be maintained below 65°C.
*** Inboard seal (Process side) internal pressure rating is defined as the Barrier Fluid Pressure minus the Process Pressure.

Basic Pressure Rating Multiplier Factors – C on SiC

Pressure rating for 4610 and 4620 inboard seals (graph 1) Calculating the maximum pressure for carbon v silicon
when operating temperature is above 110 DegC
De-rating line
15 bar 1
0.9 Carbon v Silicon Carbide

Multiplication Factor
0.8
10 bar 0.7

SiC v SiC Carbon v SiC Example: Water at 130°C

5 bar Max stuffing box pressure
0.7 x 15 bar = 10.5 bar

25mm 100mm 140mm 80° 110° 130°

Temperature °C

Multiply maximum pressure from graph 1 by de-rating factor on

vertical axis to obtain maximum working pressure
Multiplier Factors – SiC on SiC
Calculating the maximum pressure for silicon v silicon
when operating temperature is above 80 DegC

De-rating line
1
0.9 Silicon Carbide v
Multiplication Factor

Silicon Carbide
0.8

Example: Dirty water at 105°C

Max stuffing box pressure
0.9 x 15 bar = 13.5 bar

80° 110° 130°

Temperature °C

Multiply maximum pressure from graph 1 by de-rating factor on

vertical axis to obtain maximum working pressure

Materials of Construction
Component Standard Optional
Seat/Mating Ring Silicon Carbide
Face/Primary Ring Carbon Graphite Silicon Carbide (Inboard Only)
O-Ring Fluoroelastomer Ethylene Propylene
Perfluoroelastomer
Spring Hastelloy C®
Gasket, Centering Ring Glass-filled PTFE
Hardware 316 Stainless steel or better

Hastelloy C is a registered trademark of Haynes International, Inc.

Typical Arrangement/Dimensional Data

Type 4610
1/4 NPT 45
L91 min. box depth L90 to nearest obstruction ˚

D26
gland

32Ra
D4 N
bore
D1 M
+0.00/
-0.05mm
shaft
See Installation Instructions for piping arrangements.

Type 4610 Dimensional Data (inches) Type 4610 Dimensional Data (metric)
D1 D4 D1 D4
Shaft Box Bore D26 L90 L91 N M Seal Shaft Box Bore D26 L90 L91 N M
Size Min. Max. Min. Min. Max. Size Size Min. Max. Min. Min. Max.

1.000 1.615 1.940 4.125 1.422 1.267 2.62 3.75 0.437 0240 24 40.0 49.2 104.8 30 34.5 66.7 95.3 11.1
1.125 1.730 2.060 4.250 1.422 1.267 2.75 3.87 0.437 0250 25 41.0 49.2 104.8 30 34.5 66.7 95.3 11.1
1.250 1.875 2.190 4.370 1.422 1.267 2.87 4.00 0.437 0280 28 44.0 52.4 108.0 30 34.5 69.9 98.4 11.1
1.375 2.000 2.310 4.500 1.422 1.267 3.06 4.12 0.437 0300 30 46.0 55.6 111.0 30 34.5 73.0 101.6 11.1
1.500 2.250 2.500 5.000 1.462 1.313 3.43 4.50 0.563 0320 32 47.6 55.6 111.0 30 34.5 73.0 101.6 11.1
1.625 2.360 2.500 5.000 1.462 1.313 3.43 4.50 0.563 0330 33 49.0 58.7 114.3 30 34.5 73.0 101.6 11.1
1.750 2.500 2.625 5.250 1.462 1.313 3.56 4.75 0.563 0350 35 50.8 58.7 114.3 30 34.5 77.8 104.8 11.1
1.875 2.625 3.000 5.500 1.462 1.313 3.87 5.00 0.563 0380 38 57.15 63.5 127.0 31 35.5 87.3 114.3 14.3
2.000 2.750 3.000 5.500 1.462 1.313 3.87 5.00 0.563 0400 40 60.0 63.5 127.0 31 35.5 87.3 114.3 14.3
2.125 2.875 3.310 5.750 1.462 1.313 4.37 5.12 0.563 0430 43 63.0 66.7 133.4 31 35.5 90.5 120.7 14.3
2.250 3.000 3.310 5.750 1.462 1.313 4.37 5.12 0.689 0450 45 63.5 66.7 133.4 31 35.5 90.5 120.7 14.3
2.375 3.130 3.560 6.000 1.462 1.313 4.62 5.37 0.689 0480 48 66.7 76.2 139.7 31 35.5 98.4 127.0 14.3
2.500 3.250 3.875 6.250 1.462 1.433 4.87 5.62 0.689 0500 50 69.8 76.2 139.7 31 35.5 98.4 127.0 14.3
2.625 3.500 3.875 6.250 1.482 1.433 4.87 5.62 0.689 0530 53 73.0 84.1 146.0 31 35.5 111.1 130.2 17.5
2.750 3.740 3.875 6.250 1.482 1.433 4.87 5.62 0.689 0555 55 73.0 84.1 146.0 31 35.5 111.1 130.2 17.5
2.875 4.000 4.500 8.110 1.811 1.673 5.71 6.59 0.811 0580 58 79.4 90.5 152.4 31 35.5 117.5 136.5 17.5
3.000 4.000 4.500 8.110 1.811 1.673 5.71 6.59 0.811 0600 60 79.4 90.5 152.4 31 35.5 117.5 136.5 17.5
3.125 4.252 4.748 8.110 1.811 1.673 5.94 6.59 0.811 0630 63 82.6 98.4 158.8 31 35.5 123.8 142.9 17.5
3.250 4.252 4.748 8.110 1.811 1.673 5.94 6.59 0.811 0650 65 88.9 98.4 158.8 34 36.0 123.8 142.9 17.5
3.375 4.370 4.874 8.110 1.811 1.673 6.06 6.59 0.811 0700 70 95.0 98.4 158.8 34 36.0 123.8 142.9 17.5
3.500 4.500 5.000 8.504 1.811 1.673 6.22 6.98 0.811 0750 75 101.6 114.3 206 46 42.5 145 167 20.6
3.625 4.626 5.118 8.504 1.811 1.673 6.30 6.98 0.811 0800 80 108.0 120.6 206 46 42.5 151 167 20.6
3.750 4.752 5.252 9.685 1.811 1.673 6.46 8.17 0.811 0850 85 111.0 123.8 206 46 42.5 154 167 20.6
3.875 4.874 5.374 9.685 1.811 1.673 6.57 8.17 0.811 0900 90 117.5 130.0 216 46 42.5 160 177 20.6
4.000 5.000 5.512 9.685 1.811 1.673 6.73 8.17 0.811 0950 95 120.7 133.4 246 46 42.5 164 207 20.6
4.125 5.252 5.906 10.472 2.441 1.732 7.13 8.80 0.811 1000 100 127.0 140.0 246 46 42.5 171 207 20.6
4.250 5.252 5.906 10.472 2.441 1.732 7.13 8.80 0.811 1050 105 133.4 150 266 62 44 181 223 20.6
4.375 5.500 6.102 10.472 2.441 1.732 7.40 8.80 0.811 1100 110 139.7 155 266 62 44 188 223 20.6
4.500 5.500 6.102 10.472 2.441 1.732 7.40 8.80 0.811 1150 115 139.7 155 266 62 44 188 223 20.6
4.625 5.752 6.378 10.472 2.441 1.732 7.64 8.80 0.811 1200 120 146.1 162 266 62 44 194 223 20.6
4.750 5.752 6.378 10.472 2.441 1.732 7.64 8.80 0.811 1250 125 160.0 176 296 62 44 210 253 20.6
4.875 6.299 6.929 11.654 2.441 1.732 8.27 9.98 0.811 1300 130 160.0 176 296 62 44 210 253 20.6
5.000 6.299 6.929 11.654 2.441 1.732 8.27 9.98 0.811 1350 135 174.0 190 320 62 44 226 275 23.8
5.125 6.299 6.929 11.654 2.441 1.732 8.27 9.98 0.811 1400 140 174.0 190 320 62 44 226 275 23.8
5.250 6.850 7.480 12.598 2.441 1.732 8.90 10.84 0.937
5.375 6.850 7.480 12.598 2.441 1.732 8.90 10.84 0.937
5.500 6.850 7.480 12.598 2.441 1.732 8.90 10.84 0.937
5.625 6.850 7.480 12.598 2.441 1.732 8.90 10.84 0.937

Contact John Crane if enlarged bore versions are required.

Typical Arrangement/Dimensional Data

Type 4620P

L91 min. box depth L90 to nearest obstruction

M
D26
gland

3/8 NPT

32Ra
D4
bore N
D1
+0.00/
-0.05mm

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shaft
See Installation Instructions for piping arrangements.

Type 4620P Dimensional Data (inches) Type 4620P Dimensional Data (metric)
D1 D4 D1 D4
Shaft Box Bore D26 L90 L91 N M Shaft Box Bore D26 L90 L91 N M
Size Min. Max. Min. Min. Max. Size Min. Max. Min. Min. Max.

*1.000 1.625 1.889 4.000 2.000 1.635 2.80 3.25 0.525 *24.00 41.0 48.0 101.6 50.8 41.5 71 83 13.3
1.125 1.750 2.015 4.125 2.125 1.603 2.93 3.38 0.525 *25.00 41.0 48.0 101.6 50.8 41.5 71 83 13.3
1.250 1.875 2.294 4.250 2.125 1.603 3.21 3.50 0.525 28.00 44.0 51.2 104.8 54.0 40.7 74 86 13.3
1.375 2.000 2.421 4.375 2.125 1.603 3.34 3.63 0.525 30.00 46.0 58.3 108.0 54.0 40.7 82 89 13.3
1.500 2.250 2.680 4.875 2.187 1.680 3.60 4.13 0.525 32.00 47.6 58.3 108.0 54.0 40.7 82 89 13.3
1.625 2.375 2.812 5.000 2.187 1.680 3.77 4.25 0.562 33.00 50.8 61.5 111.1 54.0 40.7 85 92 13.3
1.750 2.500 2.918 5.250 2.187 1.680 3.87 4.50 0.562 35.00 50.8 61.5 111.1 54.0 40.7 85 92 13.3
1.875 2.625 2.918 5.250 2.187 1.680 3.87 4.50 0.562 38.00 57.2 68.1 123.8 55.5 42.7 91 105 13.3
2.000 2.750 3.015 5.500 2.375 1.711 4.00 4.75 0.562 40.00 60.0 71.4 127.0 55.5 42.7 96 108 14.3
2.125 2.875 3.360 5.859 2.375 1.711 4.47 4.91 0.687 43.00 63.5 74.1 133.4 55.5 42.7 98 114 14.3
2.250 3.000 3.485 6.500 2.475 1.711 4.57 5.55 0.687 45.00 63.5 74.1 133.4 55.5 42.7 98 114 14.3
2.375 3.125 3.610 6.500 2.528 1.711 4.72 5.55 0.687 48.00 66.7 74.1 133.4 55.5 42.7 98 114 14.3
2.500 3.375 3.891 6.750 2.625 1.703 5.00 5.80 0.687 50.00 69.9 76.6 139.7 60.3 43.5 102 121 14.3
2.625 3.687 4.062 6.750 2.562 1.727 5.17 5.80 0.687 53.00 73.0 85.3 148.8 60.3 43.5 114 125 17.5
2.750 3.687 4.062 6.750 2.562 1.727 5.17 5.80 0.687 55.00 73.0 85.3 148.8 60.3 43.5 114 125 17.5
*Utilises external holding clips 58.00 79.4 91.7 165.1 64.2 43.5 120 141 17.5
60.00 79.4 91.7 165.1 64.2 43.5 120 141 17.5
63.00 85.7 98.8 171.5 66.7 43.3 127 147 17.5
65.00 85.7 98.8 171.5 66.7 43.3 127 147 17.5
70.00 93.6 103.2 171.5 65.1 43.9 131 147 17.5
*Utilises external holding clips

Contact John Crane if enlarged bore versions are required.

 4620P
The Best Value...Easiest-to-Install
Dual O-Ring Cartridge Seal with Pumping Ring

Dual Seal Arrangement

• Incorporates an elastomer O-ring as the dynamic secondary sealing member.
• Inboard primary and mating ring reverse balance design allows for ID or OD
pressurisation, permitting the dual seal to operate as an unpressurised
tandem or pressurised double seal.
• Positive seal face closing forces are maintained in an upset pressure reversal
situation, providing maximum safety and process containment.

Pumping Ring — STANDARD

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• No extra cost.
• No extra inventory to carry.

Flow-Optimised Design Cartridge Design

• Integral pumping ring arrangement. • Factory-preset and pressure-tested assembly.
• Tangential piping ports. • The only dual cartridge design with centralising
• Standard configuration provides ring eliminating need for external setting clips.
increased cooling flow and face • Eliminates potential assembly and
lubrication, greatly extending seal life. installation errors.
• Increases pump reliability and process efficiency.
Europe Latin America Middle East, Africa, Asia North America
Slough, UK São Paulo, Brazil Dubai, United Arab Emirates Morton Grove, Illinois USA
Tel: 44-1753-224000 Tel: 55-11-3371-2500 Tel: 971-4-3438940 1-800-SEALING
Fax: 44-1753-224224 Fax: 55-11-3371-2599 Fax: 971-4-3438970 Tel: 1-847-967-2400
Fax: 1-847-967-3915
For your nearest John Crane facility, please contact one of the locations above.
If the products featured will be used in a potentially dangerous and/or hazardous process, your John Crane representative should be consulted prior to their selection and use.
In the interest of continuous development, John Crane Companies reserve the right to alter designs and specifications without prior notice. It is dangerous to smoke while handling
products made from PTFE. Old and new PTFE products must not be incinerated.
©2003 John Crane Print 010/03 www.johncrane.com ISO 9001, ISO 14001, ISO/TS 16949 Certified. Details available on request. B-4600/Eng