Seal papers listed by number

Tutorials

Cheat sheets

1-1 Changes in the pump discharge head of a centrifugal pump 1-1

1-2 Centrifugal pump troubleshooting 1-2

1-3 Cavitation - 1-3

1-4 Heat how it affects the pump and mechanical seals- 1-4

1-5 A few pumping terms 1-5

1-6 Bending of the pump shaft 1-6

2-1 The pump affinity laws 2-1

2-2 Why do most mechanical seals fail? 2-2

2-3 How to read a pump curve 2-3

2-4 The problem with pump standards - 2-4

2-5 Rules of thumb - seals 2-5

2-6 Preventative maintenance - pumps and seals 2-6

2-7 Rules of thumb - pumps 2-7

2-8 How to get good mechanical seal life 2-8

2-9 Centrifugal pump vibration readings 2-9

2-10 Packing conversion 2-10

2-11 Classifying mechanical seals 2-11

2-12 A new way of classifying chemicals for easier sealing 2-12

3-1 An overview of seal troubleshooting 3-1

3-2 Environmental controls and special seals- 3-2

3-3 Hot water sealing 3-3

3-4 Slurry sealing 3-4

3-5 Hot oil sealing 3-5

3-6 Flushing confusion explained 3-6

3-7 The sealing of mixers and agitators 3-7

3-8 Split mechanical seals 3-8

3-9 Troubleshooting seal components 3-9

3-10 Centrifugal pumps - what is wrong with their design ? 3-10

3-11 Non-seal pumps 3-11

3-12 How to implement the information you learn from self study and attendance at seminars 3-12.

4-1 Corrosion problems with the 300 series of stainless steel 4-1

4-2 Troubleshooting seal leakage - 4-2

4-3 Writing a set of seal specifications for your plant 4-3

4-4 Problems associated with original equipment seal designs 4-4

4-5 Pump and seal problems with no apparant cause 4-5

4-6 Controlling the temperature in the stuffing box 4-6

4-7 Carbon graphite seal faces - how they are manufactured 4-7

4-8 Non lubricant sealing - 4-8

4-9 Selecting the correct O-ring for the application 4-9

4-10 Environmental controls - controlling pressure in the stuffing box 4-10

4-11 A quick reference guide for mechanical seal failure 4-11

4-12 Pump bearings, why do they fail? 4-12

5-1 Fugitive emissions - the chemicals on the list 5-1

5-2 Hard faces - selecting the correct one 5-2

5-3 Troubleshooting bearing failures 5-3

5-4 Calculating the first critical speed of the pump's rotating shaft 5-4

5-5 Troubleshooting rub marks in a centrifugal pump 5-05

5-6 A new way to troubleshoot centrifugal pumps and mechanical seals. 5-6

5-7 High pressure and hard vacuum sealing 5-7

5-8 Seal repair - the correct procedure 5-8

5-9 Selecting the correct metal components 5-9

5-10 Seal problems that occur shortly after installation 5-10

5-11 How wide is your vision? 5-11

5-12 Understanding the centrifugal pump system curve 5-12

6-1 What do we mean by pump efficiency 6-1

6-2 Evaluating mechanical seal design 6-2

6-3 Reading seal face flatness 6-3

6-4 Selecting the correct horsepower motor 6-4

6-5 Solving a major cause of shaft deflection in volute pumps 6-5

6-6 Why you must prime a centrifugal pump 6-6

6-7 Operation practices that cause frequent seal and bearing maintenance problems 6-7

6-8 Maintenance practices that cause high seal and bearing maintenance problems 6-8

6-9 Pump selection practices that cause high seal and bearing maintenance problems. 6-9

6-10 The Mechanical Seal and Centrifugal Pump Certification Program 6-10

6-11 Predictive maintenance for centrifugal pumps 6-11

6-12 Sealing products that are sensitive to agitation. 6-12

7-1 Calculating the total system head in USCS units 7-1:

7-2 How efficient is your pump? 7-2

7-3 All about specific speed 7-3

7-4 Causes of overheating in cartridge mechanical seals 7-4

7-5 Attaching the pump and motor base plate to the foundation. The grout. 7-5

7-6 Common sense and mechanical seals: 7-6

7-7 A technique for making troubleshooting decisions 7-7

7-8 A primer on viscosity 7-8

7-9 The large stuffing box 7-9

7-10 The oversized pump 7-10

7-11 Getting what you pay for in a mechanical seal 7-11

7-12 Specific gravity 7-12

8-1 Mechanical Seal hydraulic balance 8-01

8-2 Two way hydraulic balance 8-2

8-3 Communicating with suppliers 8-3

8-4 Understanding the destruction of the ozone layer. 8-4

8-5 Conversion tables 8-5

8-6 A quick reference to prevent potential seal and pump problems. 8-6

8-7 Left blank on purpose

8-8 The dual seal arrangement 8-8

8-9 Sealing products sensitive to a change in temperature or pressure. 8-9

8-10  Sealing to the Osha 1910.119 process safety management standard and the clean air act of 1990. 8-10

8-11 Mechanical Seal design, operation, and maintenance problems 8-11

8-12 The concepts you need to understand centrifugal pumps 8-12

9-1 Another look at dynamically balancing the pump rotating components 9-1

9-2 Shaft displacement cheat sheet 9-2

9-3 What is the best pump and seal technology? 9-3

9-4 More about packing conversion. 9-4

9-5 A sensible preventative maintenance program for centrifugal pumps cheat sheet 9-5

9-6 A sensible preventative maintenance program for mechanical seals, cheat sheet 9-6

9-7 What is really happening between the mechanical seal faces? 9-7

9-8 Sources of a temperature change in the stuffing box area, cheat sheet 9-8

9-9 Why don't good seals wear out? 9-9

9-10 The affect of cavitation 9-10

9-11 Monitoring the centrifugal pump. 9-11

9-12 The difference between specific speed and suction specific speed 9-12

10-1 All about impellers 10-1

10-2 The most asked questions about mechanical seals 10-2

10-3 Shaft fretting 10-3

10-4 Preventing premature seal failure, part 1 10-4

10-5 Preventing premature seal failure, part 2 10-5

10-6 The super rubber compounds 10-6

10-7 Some more about condensate 10-7

10-8 Shaft deflection and the pump best efficiency point. 10-8

10-9 The pump is not producing enough head to satisfy the application 10-9

10-10 The pump is not producing enough capacity to satisfy the application 10-10

10-11 The centrifugal pump is drawing too much amperage. 10-11

10-12 The pump works for a while and then loses suction 10-12

11-1  Pump modifications you can make to increase the life of mechanical seals and centrifugal pump bearings. 11-1

11-2 Some common misconceptions about centrifugal pumps. 11-2

11-3 Some common misconceptions about mechanical seals 11-3

11-4 Some more things you should know about centrifugal pumps 11-4

11-5 Preventing premature seal failures.11-5

11-6 The relationship between the pump L3/D4 and premature seal failure. 11-6

11-7 Shaft displacement and the original equipment seal (O.E.M.) 11-7

11-8 How pipe friction, liquid capacity and pump head are affected by the amount of liquid flowing through a pipe. 11-8

11-9 Stationary vs. Rotating Seal Designs 11-09

11-10 Stationary cartridge seals. How to solve the problem of seal movement 11-10

11-11 The rubber bellows seal 11-11

11-12 Calculating net positive suction head (NPSH) in non-metric units 11-12.

12-1 Reductions in centrifugal pump NPSHR (net positive suction head required 12-1)

12-2 Hydrostatic sealing 12-2

12-3 Rotary pumps. 12-3

12-4 Troubleshooting the positive displacement rotary pump. 12-04

12-5 A.P.I. (American Petroleum Institute) and C.P.I. (Chemical Process Industry) merger 12-05

12-6 Increasing the centrifugal pump performance by modifying the impeller.12-6

12-7 How the shape of the pump impeller affects the pump curve.12-7

12-8 Seal face hardness testing 12.8

12-9 The non metallic seal 12.9

12-10 An overview of metal bellows sealing.12-10

12-11 Playing with a few pump terms 12-11

12-12 The self priming pump 12-12

13-1 Hydrodynamic gas seals.13-01

13-2 Pump shaft radial thrust alternative calculations (in Imperial dimensions) 13-2

13-3 Starting the centrifugal pump.13-3

13-4 Some of the basics you need to understand centrifugal pumps 13-4.

13-5 The sealing of dangerous fluids.13-5

13-6 The affinity laws for rotary, positive displacement pumps 13-6

13-7 Estimating the shutoff head of a centrifugal pump.13-7

13-8 Using a variable speed motor to control flow in a centrifugal pump.13-8

13-9 Centrifugal pump ball bearing seals 13-9

13-10 Seal partnering 1 3-10

13-11 Pump partnering 13-11

13-12 Approximate flow through an orifice 13-12

14-1 Ball bearing lubrication in centrifugal pumps 14-1.

14-2 Open vs.Closed impeller design pumps 14-2.

14-3 Pump and driver alignment 14-3

14-4 Viscosity corrections to the pump curve 14-04

14-5 The ANSI pump Standard 14-5

14-6 The double volute pump 14-6

14-7 A few things you should know about your pump's piping system 14-7

14=8 A reminder of a few things you should know about installing pumps 14-8

14-9 A look at vacuum pumps 14-9

14-10 Calculating the total system head in metric units 14-10

14-11 The ten most important features you can specify in a mechanical seal design. 14-11

14-12 Pumps installed in pits. How to correct some existing suction problems. 14-12

15-1 Pumps in parallel 15-01

15-2 The ten most important features you can specify in a single stage centrifugal pump design 15-02

15-3 Carbon seal face in a metal holder 15-03

15-4 The major improvements in mechanical seals in recent years 15-4

15-5 API plans that I use. 15-05

15-6 A glossary of the terms that are used whenever pollutants are discussed 15-6

15-7 Is this a mechanical seal application? 15-7

15-8 Some pump rebuilding tips to prevent future vibration problems 15-8

15-9 The API gland 15-9

15-10 All about NPSH 15-10

15-11 Some additional information about shaft deflection 15-11

15-12 The siphon 15-12

16-1 Correlating a few technical terms 16-01

16-2 Density and specific gravity 16-02

16-3 Flow through a Venturi 16-3

16-4 Testing for Net Positive Suction Head Available (NPSHA) 16-04

16-5 Testing for Net Positive Suction Head Required (NPSHR) 16-5

16-6 What happens when we change the flow going through a piping system? 16-06

16-7 Changing the diameter of the piping to save opeating costs 16-07

16-8 Head, Pressure and Mr. Bernoulli #16-08

16-9 Venting horizontal pumps 16-9

16-10 Venting vertical pumps 16-10

16-11 Suction throtteling 16-11

16-12 How to the calculate the water horsepower coming out of the pump 16-12

17-1 Pump Reliability 17-01

17-2 Setting up a training department for seals, bearings and pumps. 17-02

17-3 Running standby pumps. Is it a good idea? Vol 17 #03

17-4 What seal should I buy? 17-04

17-5 Slip stick 17-5

17-6 Coke 17-6

17-7 Chloride stress corroaion 17-7

17-8 Qxidizers and Halogens 17-8

17- 9 API (American Petroleum Institute) Gland 17-09

17-10 Two hard faces disadvantages 17-10

17-11 Suction recirculation 17-11

17-12 The pump is surging 17-12

18-1 Series and parallel operation of centrifugal pumps 18-1

18 -2 Full voltage starts vs. soft start of electric motors 18-2

18-3 Duty point 18-3

18-4 A.P.I.Standard 18-4

18-5 System Curve 18-5

18-6 Magnetic bearings

18-7 Viscosity

18-8 API 682 & ISO 20149

18-9 Lubricating the mechanical seal faces

18-10 Lubricating the mechanical seal rubber parts

19-1 Pump & Seal Cheat sheet Index

19-2 Source and affect of heat on mechanical seals and pumps

19-3 Cavitation

19-4 Centrifugal pump affinity laws

19-5 Corrosion problems with 300 series stainless steel

19-6 Seal application outline

19-7 Seal faces open

19-8 W designhere to specify two seals

19-9 The mechanical seal face is damaged

19-10 Mechanical seal failure

19-11 Mechanical Seal design- state of the art

19-12 Slurry pumps and seals

20-1 Water hammer solutions

Glossary of seal and pump terms

Charts and Graphs

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