Mechanical Seal

See More About:    Ear Loop        Pneumatic Air        Year Warranty        

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**

John Crane M133543 Mechanical Shaft Seal Assembly Cartridge Type 5860 5870
John Crane M133543 Mechanical Shaft Seal Assembly Cartridge Type 5860 5870
$399.00
quality
Mechanical Seal 95B045BCC96H For Drum Vacuum Pump
Mechanical Seal 95B045BCC96H For Drum Vacuum Pump
$42.58
quality
DESMI Mechanical Seal 3314 050HA2MC x4  Gaskets 0030 155CA904 0031 200AA904
DESMI Mechanical Seal 3314 050HA2MC x4 Gaskets 0030 155CA904 0031 200AA904
$699.99
quality
FlowServe Mechanical Seal RK144618 NEW Surplus
FlowServe Mechanical Seal RK144618 NEW Surplus
$35.00
quality
John Crane Type 21 Mechanical Seal MS03003 NEW Surplus
John Crane Type 21 Mechanical Seal MS03003 NEW Surplus
$50.00
quality
Gorman Rupp Mechanical Seal 46524 328 NEW Surplus
Gorman Rupp Mechanical Seal 46524 328 NEW Surplus
$190.00
quality
Morcor Ltd LWD 7697H 17 HN60 91001433 7697 H 17HN60 Mechanical Face Seal T84
Morcor Ltd LWD 7697H 17 HN60 91001433 7697 H 17HN60 Mechanical Face Seal T84
$40.00
quality
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for Type ZCH2 48 1 0683 NE
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for Type ZCH2 48 1 0683 NE
$200.00
quality
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type DCH2 GS8107060 NE
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type DCH2 GS8107060 NE
$200.00
quality
AMPCO Replacement Kit for Mechanical Seal for type ZCH2 Without Gland 48 1 05
AMPCO Replacement Kit for Mechanical Seal for type ZCH2 Without Gland 48 1 05
$200.00
quality
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZCH2 Pump without G
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZCH2 Pump without G
$200.00
quality
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZCH2 Pump w o Gland
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZCH2 Pump w o Gland
$200.00
quality
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZCH2 Pump without G
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZCH2 Pump without G
$200.00
quality
AMPCO Replacement Kit for 1625 Mechanical Seal for type ZCH2 Pump without G
AMPCO Replacement Kit for 1625 Mechanical Seal for type ZCH2 Pump without G
$200.00
quality
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZPH Pumps with Glan
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZPH Pumps with Glan
$200.00
quality
AMPCO Replacement Kit for 1 3 4 Mechanical Seal for type T1CECAVI GS81082
AMPCO Replacement Kit for 1 3 4 Mechanical Seal for type T1CECAVI GS81082
$200.00
quality
AMPCO Replacement Kit for 1 Mechanical Seal for type KC2 and Kp2 Pumps 48 1
AMPCO Replacement Kit for 1 Mechanical Seal for type KC2 and Kp2 Pumps 48 1
$200.00
quality
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type Z Series GS8107990
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type Z Series GS8107990
$200.00
quality
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZCH and ZPH Pumps w
AMPCO Replacement Kit for 1 5 8 Mechanical Seal for type ZCH and ZPH Pumps w
$200.00
quality
John Crane M12199 Mechanical Seal Kit
John Crane M12199 Mechanical Seal Kit
$87.11
quality
New Honda 78115 YB8 003 Mechanical Seal
New Honda 78115 YB8 003 Mechanical Seal
$49.99
quality
MECHANICAL SEAL KIT CARBON NEW
MECHANICAL SEAL KIT CARBON NEW
$199.00
quality
AESSEAL 45 MM MECHANICAL CLIP SEAL
AESSEAL 45 MM MECHANICAL CLIP SEAL
$110.49
quality
FLUIDTEC 375 MECHANICAL SEAL
FLUIDTEC 375 MECHANICAL SEAL
$169.99
quality
LOT OF 17 PUMP SEALS AMERICAN SEALS WEST PUMP MECHANICAL SEALSGOULDS A C 2000
LOT OF 17 PUMP SEALS AMERICAN SEALS WEST PUMP MECHANICAL SEALSGOULDS A C 2000
$49.99
quality
John Crane mechanical seal 45 B424 23 Type 1 D 4500 077 9205 BR 01J2975 001
John Crane mechanical seal 45 B424 23 Type 1 D 4500 077 9205 BR 01J2975 001
$390.00
quality
SEALOL mechanical seal 3150 676QGS SBF299 54 with 3375 676 QGS6 SBF 54 EG
SEALOL mechanical seal 3150 676QGS SBF299 54 with 3375 676 QGS6 SBF 54 EG
$410.00
quality
Seal Kit K105 1 Mechanical Pump Seal Kit  NEW
Seal Kit K105 1 Mechanical Pump Seal Kit NEW
$169.99
quality
Gogoal Mechanical Seal MG1 shaft size 75mm Replace Burgmann MG1 75mm and AESSEAL
Gogoal Mechanical Seal MG1 shaft size 75mm Replace Burgmann MG1 75mm and AESSEAL
$149.86
quality
Gogoal Mechanical seal CR shaft size 12mm cartridge seal for Grundfos Pump and
Gogoal Mechanical seal CR shaft size 12mm cartridge seal for Grundfos Pump and
$70.41
quality
uxcell 3PCS Ceramic Ring 12mm Inner Dia Water Pumps Shaft Mechanical Sealing
uxcell 3PCS Ceramic Ring 12mm Inner Dia Water Pumps Shaft Mechanical Sealing
$10.78
quality
FLOWSERVE A3R2076 12 BOOSTER PUMP MECHANICAL SEAL 1875 5V4Z
FLOWSERVE A3R2076 12 BOOSTER PUMP MECHANICAL SEAL 1875 5V4Z
$395.00
quality
NEW SKIDMORE 57924 3 4 TYPE N MECHANICAL SEAL KIT FOR VHS PUMP 1 PER BUY
NEW SKIDMORE 57924 3 4 TYPE N MECHANICAL SEAL KIT FOR VHS PUMP 1 PER BUY
$50.00
quality
CHESTERTON 02115104 MECHANICAL SEAL NNB
CHESTERTON 02115104 MECHANICAL SEAL NNB
$45.50
quality
NEW Flowserve Mechanical Seal EEMB367672I 6 LE3D1875C33 3 Glad GEB3680481B Pump
NEW Flowserve Mechanical Seal EEMB367672I 6 LE3D1875C33 3 Glad GEB3680481B Pump
$199.99
quality
NEW Flowserve EEKB266114I Mechanical Seal REV 2 KF105789 Valve Pump NEW
NEW Flowserve EEKB266114I Mechanical Seal REV 2 KF105789 Valve Pump NEW
$199.99
quality
Mechanical Seal for M D Pneumatics Tuthill PD Plus 5500 Blower fits 11449
Mechanical Seal for M D Pneumatics Tuthill PD Plus 5500 Blower fits 11449
$48.00
quality
Price Pump Mechanical Seal 0539 5 8  ID NIB
Price Pump Mechanical Seal 0539 5 8 ID NIB
$40.00
quality
3 1 4 FLOWSERVE PSS3 SPLIT SEAL SILCAR SILCAR VITON MECHANICAL SEAL
3 1 4 FLOWSERVE PSS3 SPLIT SEAL SILCAR SILCAR VITON MECHANICAL SEAL
$2,000.00
quality
THE ANCHOR PACKING CO Mechanical Seal S N R35AZ0600011
THE ANCHOR PACKING CO Mechanical Seal S N R35AZ0600011
$1,500.00
quality
New Seal Mechanical PT3 CRBN CER P N 0117819 Trash Water Pump
New Seal Mechanical PT3 CRBN CER P N 0117819 Trash Water Pump
$49.88
quality
NOS L000 LL CL2 0044 Mechanical Seal Rev J D 1625 684
NOS L000 LL CL2 0044 Mechanical Seal Rev J D 1625 684
$650.00
quality
NEW FLOWSERVE 34815 MECHANICAL SEAL
NEW FLOWSERVE 34815 MECHANICAL SEAL
$44.99
quality
Mechanical Pump Seal Assembly Viton Shaft Diameter 063 NEW
Mechanical Pump Seal Assembly Viton Shaft Diameter 063 NEW
$30.00
quality
FirstPower Group LLC 700032H Control Valve Seal Complete Mechanism Modification
FirstPower Group LLC 700032H Control Valve Seal Complete Mechanism Modification
$699.00
quality
NEW SEPCO RAA0026HDN AAAX 00 MECHANICAL PUMP SEAL TYPE HDN 1 5 8 IN D533974
NEW SEPCO RAA0026HDN AAAX 00 MECHANICAL PUMP SEAL TYPE HDN 1 5 8 IN D533974
$87.13
quality
NEW SEPCO RAA0030SRS AABX 00 ROTARY MECHANICAL PUMP SEAL SRS 1 7 8 IN D533982
NEW SEPCO RAA0030SRS AABX 00 ROTARY MECHANICAL PUMP SEAL SRS 1 7 8 IN D533982
$87.13
quality
Filton Mechanical Seal Kit
Filton Mechanical Seal Kit
$2,500.00
quality
REPAIR KIT FOR 3 1 4 FLOWSERVE PSS3 MECHANICAL SEAL RK143383PS3
REPAIR KIT FOR 3 1 4 FLOWSERVE PSS3 MECHANICAL SEAL RK143383PS3
$175.00
quality
Mechanical seal seat adapter 4 to 3 3 4 inches 3 5 16 inch bore Unused
Mechanical seal seat adapter 4 to 3 3 4 inches 3 5 16 inch bore Unused
$200.00
quality
FLOWSERVE 1750 SHAFT SIZE 146440 MECHANICAL SEAL
FLOWSERVE 1750 SHAFT SIZE 146440 MECHANICAL SEAL
$395.00
quality
AESSEAL 2375 19 CURC CARTRIDGE MECHANICAL SEAL VITON ABCA19V01 NEW SURPLUS
AESSEAL 2375 19 CURC CARTRIDGE MECHANICAL SEAL VITON ABCA19V01 NEW SURPLUS
$374.97
quality
FLOWSERVE 60514254 125JC1B XP871 MECHANICAL SEAL NEW
FLOWSERVE 60514254 125JC1B XP871 MECHANICAL SEAL NEW
$50.07
quality
MONO PUMP MO40127G MECHANICAL SEAL NEW
MONO PUMP MO40127G MECHANICAL SEAL NEW
$50.03
quality
Crane Deming B34329 Mechanical Tungsten Carbide Seal Assembly
Crane Deming B34329 Mechanical Tungsten Carbide Seal Assembly
$781.25
quality
Flowserve VRA VRA 110 Double Mechanical Seal
Flowserve VRA VRA 110 Double Mechanical Seal
$1,550.00
quality
Viking 6 N4323A Pump w Mechanical Seals 300lb Flanges good for High Pressure
Viking 6 N4323A Pump w Mechanical Seals 300lb Flanges good for High Pressure
$15,000.00
quality
A C Compressor Corporation 16 242 085 502 Mechanical Seal
A C Compressor Corporation 16 242 085 502 Mechanical Seal
$999.00
quality
FLYGT PUMP SHAFT SEAL 6422144  642 21 44 PEAK MECHANICAL SE 200722 FREE SHIP
FLYGT PUMP SHAFT SEAL 6422144 642 21 44 PEAK MECHANICAL SE 200722 FREE SHIP
$28.99
quality
Shaft Seal 20mm 787 Mechanical Water Pump Seals Type B 6A 12733 NEW
Shaft Seal 20mm 787 Mechanical Water Pump Seals Type B 6A 12733 NEW
$12.10
quality
Burgmann MR333S1 D 75 A3 Mechanical Seal E10 NEW KFGRL BUKA22 12 205 BUL01 05
Burgmann MR333S1 D 75 A3 Mechanical Seal E10 NEW KFGRL BUKA22 12 205 BUL01 05
$69.99
quality
Pump Mechanical Seal NEW 14375 X 625 1 7 16 X 5 8 276816 WATER HYDRAULIC
Pump Mechanical Seal NEW 14375 X 625 1 7 16 X 5 8 276816 WATER HYDRAULIC
$0.99
quality
uxcell Universal Oil Resistant Water Cooling Pump Mechanical Seal 30x52x10mm
uxcell Universal Oil Resistant Water Cooling Pump Mechanical Seal 30x52x10mm
$7.50
quality
 NEW  John Crane International Elastomer Mechanical O Ring Seal 8 1T 2125
NEW John Crane International Elastomer Mechanical O Ring Seal 8 1T 2125
$200.00
quality
KSBMechanical SealP 243300116817 20B06 10 86 82 0001
KSBMechanical SealP 243300116817 20B06 10 86 82 0001
$9.95
quality
John Crane Lemco mechanical seal cooler LHXR 0750 SCS
John Crane Lemco mechanical seal cooler LHXR 0750 SCS
$1,450.00
quality
Gould 10K91 Mechanical Seal Assembly
Gould 10K91 Mechanical Seal Assembly
$121.33
quality
PAC SEAL MECHANICAL PUMP SEAL 11086 1 SHAFT SIZE NEW
PAC SEAL MECHANICAL PUMP SEAL 11086 1 SHAFT SIZE NEW
$75.00
quality
PAC SEAL MECHANICAL PUMP SEAL PS 752 075 SHAFT SIZE NEW
PAC SEAL MECHANICAL PUMP SEAL PS 752 075 SHAFT SIZE NEW
$25.00
quality
2 MECOSEL 5330402324 Seal Mechanical 15 16 Rotary Unit T1252
2 MECOSEL 5330402324 Seal Mechanical 15 16 Rotary Unit T1252
$50.00
quality
egg sealol mechanical seal 2588
egg sealol mechanical seal 2588
$15.00
quality
NEW FULTON 2 30 2221 1762480 MECHANICAL SEAL GLAND D354140
NEW FULTON 2 30 2221 1762480 MECHANICAL SEAL GLAND D354140
$85.00
quality
US Seal 15 Mechanical Seal PS 350 NEW Surplus
US Seal 15 Mechanical Seal PS 350 NEW Surplus
$61.20
quality
Chesterton 880S Mechanical Seal 52343 Rebuilt
Chesterton 880S Mechanical Seal 52343 Rebuilt
$15.99
quality
Garlock PK Mechanical Seal 2 shaft code 70005 0027 LL3100
Garlock PK Mechanical Seal 2 shaft code 70005 0027 LL3100
$30.00
quality
Chesterton 880 Mechanical Seal 53010 NEW Surplus
Chesterton 880 Mechanical Seal 53010 NEW Surplus
$50.00
quality
Chesterton 880 Mechanical Seal 53120 NEW Surplus
Chesterton 880 Mechanical Seal 53120 NEW Surplus
$50.00
quality
Bell  Gossett 186862 Mechanical Seal New
Bell Gossett 186862 Mechanical Seal New
$79.99
quality
Chesterton 880 Mechanical Seal 54113 Rebuilt
Chesterton 880 Mechanical Seal 54113 Rebuilt
$40.00
quality
NEW OLD STOCK IN BOX JOHN CRANE JC TYPE ITE MECHANICAL PUMP SEAL B60511
NEW OLD STOCK IN BOX JOHN CRANE JC TYPE ITE MECHANICAL PUMP SEAL B60511
$149.95
quality
POWER  PUMPS INC MECHANICAL SEAL 1LA9 7  P701 34 77
POWER PUMPS INC MECHANICAL SEAL 1LA9 7 P701 34 77
$85.00
quality
Eagle Burgmann Q1Q1PGG Mechanical Seal MG1S1 635 G3 E1 928367
Eagle Burgmann Q1Q1PGG Mechanical Seal MG1S1 635 G3 E1 928367
$70.00
quality
Dixon Fuel Nozzle Dog Latch Mechanism w Sealing Plug FN600
Dixon Fuel Nozzle Dog Latch Mechanism w Sealing Plug FN600
$1,080.20
quality
John Crane B089 39 Mechanical Seal 1 BF50171 CFSP17409
John Crane B089 39 Mechanical Seal 1 BF50171 CFSP17409
$99.00
quality
Didn"t find what your looking for? Search our real time inventory below...

Mechanical Seal

See More About:    Cooler Peltier        Flute Plug        Blue Green        
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:    High Performance        Tube Cutter        Interface Module        

Other Items People View After These Listings About