Mechanical Seal

See More About:    Talky Radio        Boring Bars        Lathe Chuck        

You discovered our blog Woodturning Tools. Please Remember to bookmark this page Mechanical Seal. If you enjoy our post Mechanical Seal, show your love by hitting one of the social media buttons above for this page.

**Please Enable JavaScript to Navigate Thru Our Listings**
**Click Here for Instructions**

4D Mechanical Seal Assembly By Hale Products 2965021010
4D Mechanical Seal Assembly By Hale Products 2965021010
$50.00
quality
40 FW Mechanical Seal By Hale Products 2965220000
40 FW Mechanical Seal By Hale Products 2965220000
$50.00
quality
1 1 2 Mechanical Seal w Ceramic Seat By Hale Products 2965021030
1 1 2 Mechanical Seal w Ceramic Seat By Hale Products 2965021030
$38.00
quality
Gorman Rupp 1 1 4 Mechanical Seal 25271886
Gorman Rupp 1 1 4 Mechanical Seal 25271886
$45.00
quality
1 Gorman Rupp Mechanical Seal 25284941
1 Gorman Rupp Mechanical Seal 25284941
$120.00
quality
NEW FLOWSERVE 385349 1750IN SHAFT MECHANICAL PUMP SEAL STAINLESS PART D292964
NEW FLOWSERVE 385349 1750IN SHAFT MECHANICAL PUMP SEAL STAINLESS PART D292964
$200.00
quality
NEW FLOWSERVE GEB2848681B P 50 DURA SEAL 2IN MECHANICAL PUMP SEAL D293135
NEW FLOWSERVE GEB2848681B P 50 DURA SEAL 2IN MECHANICAL PUMP SEAL D293135
$200.00
quality
NEW FLOWSERVE 109963 DURAMETALLIC 1 3 4IN SINGLE MECHANICAL PUMP SEAL D293163
NEW FLOWSERVE 109963 DURAMETALLIC 1 3 4IN SINGLE MECHANICAL PUMP SEAL D293163
$200.00
quality
NEW Sundyne Lower Mechanical Seal SE04AA12K LMV 806 3708572
NEW Sundyne Lower Mechanical Seal SE04AA12K LMV 806 3708572
$200.00
quality
NEW Sundyne Upper Mechanical Seal SE04AA18F LMV 806 3708570
NEW Sundyne Upper Mechanical Seal SE04AA18F LMV 806 3708570
$200.00
quality
NEW CRANE 0030877 MECHANICAL PUMP SEAL REPLACEMENT PART B292203
NEW CRANE 0030877 MECHANICAL PUMP SEAL REPLACEMENT PART B292203
$45.00
quality
NEW MECHANICAL SEAL 950 024 SAC 914
NEW MECHANICAL SEAL 950 024 SAC 914
$24.95
quality
FLOWSERVE P 50 MECHANICAL SEAL 2 3 8 BORE STAINLESS STEEL
FLOWSERVE P 50 MECHANICAL SEAL 2 3 8 BORE STAINLESS STEEL
$89.99
quality
New Dunham Bush MEPCO 3179 Mechanical Pump Seal for A 9 Pumps
New Dunham Bush MEPCO 3179 Mechanical Pump Seal for A 9 Pumps
$43.20
quality
CHESTERTON 02115104 MECHANICAL SEAL NNB
CHESTERTON 02115104 MECHANICAL SEAL NNB
$39.99
quality
1 NEW EGG SEALOL RSD76006 MECHANICAL SEAL NIB
1 NEW EGG SEALOL RSD76006 MECHANICAL SEAL NIB
$19.99
quality
JOHN CRANE MECHANICAL SEALTYPE 1648RS Single CartridgeFluoroelastomer
JOHN CRANE MECHANICAL SEALTYPE 1648RS Single CartridgeFluoroelastomer
$1,500.00
quality
Chesterton Mechanical Seal Assembly Type 123 1875 New
Chesterton Mechanical Seal Assembly Type 123 1875 New
$186.75
quality
NEW BLACKMER 333025 MECHANICAL PUMP SEAL REPLACEMENT PART D293770
NEW BLACKMER 333025 MECHANICAL PUMP SEAL REPLACEMENT PART D293770
$204.00
quality
DYNA TECH MECHANICAL SEAL DELTA 2000 SIZE 2 1 2
DYNA TECH MECHANICAL SEAL DELTA 2000 SIZE 2 1 2
$125.00
quality
JOHN CRANE MECHANICAL SEAL CORE 1875 SINGLE CARTRIDGE P  M53699
JOHN CRANE MECHANICAL SEAL CORE 1875 SINGLE CARTRIDGE P M53699
$15.00
quality
2 Mechanical Seal Rotary Unit ASIModel SD 3 Size 1 3 8 NIB
2 Mechanical Seal Rotary Unit ASIModel SD 3 Size 1 3 8 NIB
$85.00
quality
EGG Sealol PO 2894 Mechanical Seal
EGG Sealol PO 2894 Mechanical Seal
$14.50
quality
QTY 160 Pool  Spa pump motor Mechanical Seal PS100
QTY 160 Pool Spa pump motor Mechanical Seal PS100
$329.00
quality
Double Mechanical Seal
Double Mechanical Seal
$4.99
quality
Mechanical Seal Assembly ASI Mod 585 2 size 3250 NIB 222I52A 01AB8S
Mechanical Seal Assembly ASI Mod 585 2 size 3250 NIB 222I52A 01AB8S
$250.00
quality
Pillar DNS Dai Nippon Screen Mechanical Shaft Seal 10625 OD 8 ID
Pillar DNS Dai Nippon Screen Mechanical Shaft Seal 10625 OD 8 ID
$29.99
quality
Scot Viton Double Head 125 Type 21 Mechanical Shaft Seal 101000164
Scot Viton Double Head 125 Type 21 Mechanical Shaft Seal 101000164
$80.00
quality
Flowserve Mechanical Single Cartridge Seal 1 3 4 p n85 14SAGF New Goulds 5 star
Flowserve Mechanical Single Cartridge Seal 1 3 4 p n85 14SAGF New Goulds 5 star
$250.00
quality
NEW JOHN CRANE B66429 MECHANICAL SEAL ASSEMBLY TYPE 21 SIZE SZ 0750 FACE
NEW JOHN CRANE B66429 MECHANICAL SEAL ASSEMBLY TYPE 21 SIZE SZ 0750 FACE
$17.96
quality
NEW NO NAME 13328 MECHANICAL SEAL ASSEMBLY
NEW NO NAME 13328 MECHANICAL SEAL ASSEMBLY
$17.96
quality
Welch 1397 Duo Seal Belt Driven Rotary Vane Mechanical Vacuum Pump
Welch 1397 Duo Seal Belt Driven Rotary Vane Mechanical Vacuum Pump
$1,200.00
quality
mechanical seal plain CB131 23 HH 53J M Pave low CH 53 D E helicopter military
mechanical seal plain CB131 23 HH 53J M Pave low CH 53 D E helicopter military
$53.00
quality
Berkeley S32016 Mechanical Shaft Seal 2 1 8 Type 21 Long
Berkeley S32016 Mechanical Shaft Seal 2 1 8 Type 21 Long
$200.00
quality
LOT 3 NEW KRONES 1 073 52 260 0 MECHANICAL SEAL 15X8X5MM D271351
LOT 3 NEW KRONES 1 073 52 260 0 MECHANICAL SEAL 15X8X5MM D271351
$16.00
quality
Federal Mogul Mechanical Seals
Federal Mogul Mechanical Seals
$2.99
quality
NEW VAUGHAN V801 309 1 1 2 IN SILICON CARBIDE MECHANICAL PUMP SEAL B412417
NEW VAUGHAN V801 309 1 1 2 IN SILICON CARBIDE MECHANICAL PUMP SEAL B412417
$300.00
quality
Burgmann Cavity Pump Mechanical Seal MG1 70 Z
Burgmann Cavity Pump Mechanical Seal MG1 70 Z
$129.00
quality
NEW HARBOUR HSS T21 5 C TC 5 8IN MECHANICAL PUMP SEAL REPLACEMENT PART B292329
NEW HARBOUR HSS T21 5 C TC 5 8IN MECHANICAL PUMP SEAL REPLACEMENT PART B292329
$50.00
quality
HARBOUR HSS T21 10 CC 1 1 4IN T 21 MECHANICAL PUMP SEAL REPLACEMENT PART B292317
HARBOUR HSS T21 10 CC 1 1 4IN T 21 MECHANICAL PUMP SEAL REPLACEMENT PART B292317
$100.00
quality
Mechanical Shaft Seal Type 16 100 SE Pool Spa Pac Seal NEW
Mechanical Shaft Seal Type 16 100 SE Pool Spa Pac Seal NEW
$8.49
quality
John Crane spilt mechanical seal repair 30 type 37FS B366 65 B36665 3710 24B
John Crane spilt mechanical seal repair 30 type 37FS B366 65 B36665 3710 24B
$88.00
quality
John Crane spilt mechanical seal repair 375 type 37FS 30 M35278
John Crane spilt mechanical seal repair 375 type 37FS 30 M35278
$140.00
quality
Flowserve 20 Cartridge dual bellows Mechanical Seal X 200 127353 HASTELLOY C
Flowserve 20 Cartridge dual bellows Mechanical Seal X 200 127353 HASTELLOY C
$135.00
quality
AesSeal BSIV BSIVN Cartridge Mechanical Seal
AesSeal BSIV BSIVN Cartridge Mechanical Seal
$199.00
quality
ZENITH 18 79003 0048 1 PUMP MECHANICAL SEAL REPAIR KIT B 9000 GEAR PUMP 79496
ZENITH 18 79003 0048 1 PUMP MECHANICAL SEAL REPAIR KIT B 9000 GEAR PUMP 79496
$125.00
quality
ZENITH 15 54020 0025 3 MECHANICAL SEAL HOUSE
ZENITH 15 54020 0025 3 MECHANICAL SEAL HOUSE
$100.00
quality
NEW DEMING 84876 MECHANICAL PUMP SEAL REPLACEMENT PART B293722
NEW DEMING 84876 MECHANICAL PUMP SEAL REPLACEMENT PART B293722
$44.00
quality
NEW MTH PUMPS 12 1068 01 7 8IN MECHANICAL PUMP SEAL REPLACEMENT PART B293742
NEW MTH PUMPS 12 1068 01 7 8IN MECHANICAL PUMP SEAL REPLACEMENT PART B293742
$44.00
quality
Mechanical shaft seal Borg Warner UHT 7500
Mechanical shaft seal Borg Warner UHT 7500
$1,400.00
quality
EAGLE BURGMANN CARTEX DN 20 E1 MECHANICAL SEAL ASSEMBLY 066082010 REV III
EAGLE BURGMANN CARTEX DN 20 E1 MECHANICAL SEAL ASSEMBLY 066082010 REV III
$269.99
quality
BURKS 9696 PUMP MECHANICAL REPLACEMENT SEAL 290V 5 8 BORE
BURKS 9696 PUMP MECHANICAL REPLACEMENT SEAL 290V 5 8 BORE
$39.99
quality
NIB John Crane D 2000 318 0800 Mechanical Seal D20003180800 NEW IN BOX
NIB John Crane D 2000 318 0800 Mechanical Seal D20003180800 NEW IN BOX
$59.99
quality
GORMAN RUFF 25271 903 NOS MECHANICAL PUMP SEAL ASSEMBLY KIT 1 1 2 SHAFT
GORMAN RUFF 25271 903 NOS MECHANICAL PUMP SEAL ASSEMBLY KIT 1 1 2 SHAFT
$40.00
quality
John Crane Packing R143 F23 Mechanical Pump Seal Assembly 13 16 inside diameter
John Crane Packing R143 F23 Mechanical Pump Seal Assembly 13 16 inside diameter
$25.00
quality
NEW IN BOX GOULDS PUMP SHAFT SEAL MECHANICAL SEAL SPH Part  10K13
NEW IN BOX GOULDS PUMP SHAFT SEAL MECHANICAL SEAL SPH Part 10K13
$58.98
quality
FLUIDTEC 175 MECHANICAL SEAL STYLE62
FLUIDTEC 175 MECHANICAL SEAL STYLE62
$99.99
quality
AESSEAL 45 MM MECHANICAL CLIP SEAL
AESSEAL 45 MM MECHANICAL CLIP SEAL
$129.99
quality
FLOWSERVE DURAMETALLIC AU3B1625WE3 Mechanical Seal Ins
FLOWSERVE DURAMETALLIC AU3B1625WE3 Mechanical Seal Ins
$49.99
quality
NEW JOHN CRANE BF501C1 MECHANICAL TYPE 21 PUMP SEAL REPLACEMENT PART B444516
NEW JOHN CRANE BF501C1 MECHANICAL TYPE 21 PUMP SEAL REPLACEMENT PART B444516
$55.00
quality
AIRTECH 2BY20780BV035A MECHANICAL SEAL NEW
AIRTECH 2BY20780BV035A MECHANICAL SEAL NEW
$8.00
quality
CHESTERTON 442 42 MECHANICAL SEAL KIT 5 1 4 DIA NIB
CHESTERTON 442 42 MECHANICAL SEAL KIT 5 1 4 DIA NIB
$3,200.00
quality
NEW VIKING 2 477 02 999 PUMP MECHANICAL SEAL REPLACEMENT PART D395869
NEW VIKING 2 477 02 999 PUMP MECHANICAL SEAL REPLACEMENT PART D395869
$50.00
quality
JOHN CRANE 611QGCSBR337 22 MECHANICAL 1 3 8IN PUMP SEAL REPLACEMENT PART B295158
JOHN CRANE 611QGCSBR337 22 MECHANICAL 1 3 8IN PUMP SEAL REPLACEMENT PART B295158
$325.00
quality
Flowserve VRA Mechanical Seal P N 417089 G 2250 Product S0N VRA NIB
Flowserve VRA Mechanical Seal P N 417089 G 2250 Product S0N VRA NIB
$325.00
quality
Flowserve VRA Mechanical Seal P N 143069 G 2750 Product 1 SGL OUTS VRA NIB
Flowserve VRA Mechanical Seal P N 143069 G 2750 Product 1 SGL OUTS VRA NIB
$325.00
quality
Chesterton Mechanical Seal Standard Cartridge 155 15
Chesterton Mechanical Seal Standard Cartridge 155 15
$195.00
quality
Mechanical seal seat 4012 inch ID 811715612 Luwa Corp Unused
Mechanical seal seat 4012 inch ID 811715612 Luwa Corp Unused
$1,500.00
quality
New Goulds 10K13 Mechanical Seal
New Goulds 10K13 Mechanical Seal
$65.00
quality
MECHANICAL SEAL FOR CHEMINEER MIXER
MECHANICAL SEAL FOR CHEMINEER MIXER
$599.00
quality
135433 New No Box Ingersoll Rand P02887 Mechanical Seal Rotor
135433 New No Box Ingersoll Rand P02887 Mechanical Seal Rotor
$67.93
quality
new jabsco pump 8728 0000 mechanical seal part
new jabsco pump 8728 0000 mechanical seal part
$69.99
quality
FlowServe split mechanical seal 40 inch PSS III 157712PS3 PSSIII 4000 PS3
FlowServe split mechanical seal 40 inch PSS III 157712PS3 PSSIII 4000 PS3
$240.00
quality
Sealol mechanical cartridge seal 40 inch 676GGT SCC 31768 CF26626 C5548748
Sealol mechanical cartridge seal 40 inch 676GGT SCC 31768 CF26626 C5548748
$195.00
quality
MECHANICAL SEAL ASSEMBLY 26459 30
MECHANICAL SEAL ASSEMBLY 26459 30
$375.00
quality
FlowServe split mechanical seal ring 750 inch K43S7500PC3 PCIII
FlowServe split mechanical seal ring 750 inch K43S7500PC3 PCIII
$88.00
quality
JOHN CRANE B63172 Mechanical Seal Assembly 2375 Type 21 Polished face
JOHN CRANE B63172 Mechanical Seal Assembly 2375 Type 21 Polished face
$150.00
quality
Flexibox Mechanical Seal Unbalanced Seal Type R10R P N R10R 0825 31AY 0000
Flexibox Mechanical Seal Unbalanced Seal Type R10R P N R10R 0825 31AY 0000
$125.00
quality
Flexibox Mechanical Seal Unbalanced Seal Type R10L Part  R10L 1016 31AS H104
Flexibox Mechanical Seal Unbalanced Seal Type R10L Part R10L 1016 31AS H104
$125.00
quality
Test Titan mechanical test plug 3 size Seals deeper than other plugs NEW
Test Titan mechanical test plug 3 size Seals deeper than other plugs NEW
$3.99
quality
EGG SEALOL MECHANICAL SEAL RSD 1905  RSD1905
EGG SEALOL MECHANICAL SEAL RSD 1905 RSD1905
$55.00
quality
EGG SEALOL MECHANICAL SEAL 1855
EGG SEALOL MECHANICAL SEAL 1855
$75.00
quality
EGG SEALOL MECHANICAL SEAL 3830
EGG SEALOL MECHANICAL SEAL 3830
$75.00
quality
JOHN CRANE MECHANICAL SEAL RSD 1320  RSD1320
JOHN CRANE MECHANICAL SEAL RSD 1320 RSD1320
$35.00
quality
Didn"t find what your looking for? Search our real time inventory below...

Mechanical Seal

See More About:    Johnson Control        Headset Boom        Rockwell Delta        
Mechanical Seals

Mechanical+Seal

Using Ultrananocrystalline Diamond To Improve Mechanical Seal Performance

A mechanical seal is a critical component whose useful life significantly impacts the overall reliability and robustness of pump or centrifugal compressor. Unscheduled or premature failure of the seal leads to increased maintenance and increased overall equipment costs to the user. The overall performance of a mechanical seal often is most affected by the performance of the faces and the intervening lubricating film. This primary element of a mechanical seal represents a classic problem in the science of tribology, the study of friction, wear and lubrication.

The demands placed on seal faces require careful attention to the issues of wear resistance, chemical compatibility, mechanical and thermal properties—all of which are determined by the end use application and overall seal design. When a mechanical seal is used in a pump, the liquid in the pump is used to cool and lubricate the seal faces. The seal faces are in sliding contact and prevent the liquid in the pump from reaching atmosphere. This contact also generates frictional heat that must be removed from the seal faces. Failure to remove this unwanted heat often results in the boiling of the lubricating liquid film at the seal faces, usually leaving a deleterious residue and causing premature failure of elastomeric components in the seals (static-secondary seals). Both of these undesirable effects of elevated temperatures lead to premature seal failure.

The ability to maintain coolant on the seal face is even more critical when compounded by the demands associated with the pumping of abrasive media or a pump’s ability to withstand intermittent and unscheduled coolant loss. The ability to run two hard-faced seal materials such as SiC against each other often is desirable but not practical due to the premature failures that result from elevated temperatures caused by friction at the seal interface.

In the case of a centrifugal gas compressor, a noncontacting mechanical seal is used to contain the gas within the machine. A lift mechanism, such as spiral grooves, is included in the design of the seal. During operation the seal faces do not make contact except at startup and shutdown. The intense frictional heat occurring at this time must be controlled or face damage can occur.

Based on the benefits nature’s hardest substance would appear to offer for this application, the idea of using the diamond as a wear resistant face material in seals is not new. Diamond also possesses many other attractive properties, including extremely high thermal conductivity and chemical resistance. Unfortunately, previous attempts at integrating diamond into seal faces failed due to difficulties in ensuring that the diamond face presented the necessary surface finish required for such a demanding tribological application. Following extensive research and development and improvements in equipment and processes, those problems appear to have been solved.

Today, a new form of diamond with ultrananocrystalline grains has entered the industrial arena. Invented at Argonne National Laboratory and commercialized for seals by John Crane, Inc. and Advanced Diamond Technologies, Inc., UNCD?, as it is commercially known, provides the surface roughness typical of normal, unprocessed seal. UNCD has been dynamically tested and shown to signifi- cantly reduce the frictional heat and increase the life of the seal faces in accelerated wear. The work highlighted in this article was completed, in part, by funding from the National Science Foundation and the Department of Energy.

Manufacturing hurdles

One of the major obstacles in providing a diamond-treated surface for a mechanical seal is maintaining the surface flatness and roughness necessary to achieve sealing. Early work in diamond surfacing placed extreme demands on finishing and polishing the diamond to meet the required metrology and geometric specifications of a seal face. Surfaces were rough and had a high degree of waviness. Additional lapping of the diamond surface to achieve sealing could not be done cost-effectively due to the hardness of diamond. Consequently, many researchers abandoned the idea of using diamond as a surface for seals.

The development of ultrananocrystalline diamond (UNCD), though, generated renewed interest in diamondtreated seal faces. The process demonstrated that the base material could be treated with diamond without changing its original flatness. This was a major breakthrough in the manufacturing technology for diamond-structured surfaces. At last, diamond could be applied to a seal face without any further work to achieve the desired flatness for sealing fluids. Moreover, UNCD, unlike other diamond films, has nanometer-scale roughness that allows as-deposited UNCD to have sufficient smoothness so that it doesn’t degrade a soft counterface. In other words, UNCD works in both hard on hard and hard on soft sealing applications.

Still, there was an additional obstacle to overcome. Work to this point was done to transfer this laboratory-scale process to meet the demand of seal production. New equipment and processes had to be designed to handle a larger volume of seals at one time. Once this was done, the new equipment and processes had to be validated. Tests were run on production parts and compared to those run on the smaller scale equipment. Continuous testing confirmed that the production parts met the early results for friction and wear testing of parts manufactured on the smaller scale equipment.

Friction testing

Friction plays an important part in the success or failure of a set of seal faces. Not all materials make good seal faces. Some materials have properties that hold heat in the seal face, while others wear too much. Applying diamond to a seal face reduces both friction and wear. One of the best substrate materials for diamond is silicon carbide. Silicon carbide and diamond have very similar material properties. Results of friction testing for UNCD on a SiC face are as follows:

Carbon running against UNCD on silicon carbide μ = 0.07

Silicon carbide running against UNCD on silicon carbide μ = 0.04

The results for carbon versus UNCD on silicon carbide were expected. This is a normal value for friction in seal design work. The results for silicon carbide versus UNCD on silicon carbide were very good. When silicon carbide runs against itself without any diamond treatment, the coefficient of friction is greater than 0.1. For those applications requiring hard-on-hard seal faces, the application of a diamond-treated seal face is a major improvement. Several groups of seal faces have been tested, resulting in the same friction values.

Dynamic testing

An important step in qualifying materials for a mechanical seal is dynamic testing in hot water. This test involves running a 1.375 diameter seal in 250 F water at 100 psig and 3450 rpm. At these conditions, the pressure-velocity value for the seal is 170,000 psi x ft/min. This test in hot water is very demanding of the seal. Each test run consists of running a group of four pumps, three fi tted with seals treated with diamond and one without a treated surface. The results of hot-water testing were outstanding for the diamond-treated seals. Very minimal or no measureable wear occurred over the 100-hour test. The untreated silicon carbide seals in each case failed due to heavy wear across the entire seal face.

These results were typical for each test run. The UNCD-treated surfaces were in excellent condition with very little carbon wear. The untreated seal had high wear for both the carbon and silicon carbide seal faces.

An interesting measurement taken after testing was surface flatness. The diamond-treated
mechanical seal
had no change in surface flatness during testing. The untreated silicon carbide had an increase of 240 microinches. This is an indication that the untreated surface was running hotter than the diamond-treated surface. Continued increases in flatness or surface waviness will lead to unwanted seal leakage and wear.

If you are looking for a different item here is a list of related products on Woodturning Tools, please check out the following:

See More About:    Klein Tools        Metal Film        Temperature Sensor        

Other Items People View After These Listings About