Mechanical Seal

See More About:    Safety Vest        Shrink Wrap        Scanner Nascar        

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**

GOULDS WATER TECHNOLOGY 10K13 Mechanical Seal G8491691
GOULDS WATER TECHNOLOGY 10K13 Mechanical Seal G8491691
$51.46
quality
GOULDS WATER TECHNOLOGY 10K62 Mechanical Seal G8491795
GOULDS WATER TECHNOLOGY 10K62 Mechanical Seal G8491795
$102.35
quality
JOHN CRANE 1 1 2 ID x 2 OD EGG 02013878 MECHANICAL SEAL 670 AHC TGC 000 22
JOHN CRANE 1 1 2 ID x 2 OD EGG 02013878 MECHANICAL SEAL 670 AHC TGC 000 22
$108.00
quality
GOULDS WATER TECHNOLOGY 10K55 Mechanical Seal G8491786
GOULDS WATER TECHNOLOGY 10K55 Mechanical Seal G8491786
$51.46
quality
New John Crane Mechanical Seal IS20 2F 8C 3750 type1 b205 39 BF5017118 8
New John Crane Mechanical Seal IS20 2F 8C 3750 type1 b205 39 BF5017118 8
$1,199.00
quality
Flex A Seal FL 145M Mechanical Seal
Flex A Seal FL 145M Mechanical Seal
$55.00
quality
Federal Mogul Mechanical Seals
Federal Mogul Mechanical Seals
$2.99
quality
NEW EAGLE BURGMANN CARTEX DN20 E2 MECHANICAL SEAL ASSEMBLY V16MG BQ1V16MG
NEW EAGLE BURGMANN CARTEX DN20 E2 MECHANICAL SEAL ASSEMBLY V16MG BQ1V16MG
$539.99
quality
NEW EAGLE BURGMANN CARTEX DN 20 E2 MECHANICAL SEAL ASSEMBLY Q1Q1V16MG BQ1V16MG
NEW EAGLE BURGMANN CARTEX DN 20 E2 MECHANICAL SEAL ASSEMBLY Q1Q1V16MG BQ1V16MG
$969.99
quality
Pac Seal Type 16 Pump Shaft Mechanical Seal
Pac Seal Type 16 Pump Shaft Mechanical Seal
$8.00
quality
Armstrong 1 3 8 X 3 4 Mechanical Seal Kit 816707 001 for on a 6 Series Pump
Armstrong 1 3 8 X 3 4 Mechanical Seal Kit 816707 001 for on a 6 Series Pump
$59.99
quality
GOULDS PUMPS 10K94 Mechanical Seal
GOULDS PUMPS 10K94 Mechanical Seal
$165.88
quality
GARLOCK MECHANICAL SEAL 1 13 16 71516 7850 VITON CRB NIR
GARLOCK MECHANICAL SEAL 1 13 16 71516 7850 VITON CRB NIR
$59.00
quality
PAC SEAL 1R306 5 8 MECHANICAL SHAFT SEAL KIT
PAC SEAL 1R306 5 8 MECHANICAL SHAFT SEAL KIT
$9.99
quality
John Crane 40 mechanical seal T8B1 32A 8B1 part  B91244
John Crane 40 mechanical seal T8B1 32A 8B1 part B91244
$458.00
quality
GORMAN RUPP 12590 FACTORY MECHANICAL SEAL SERVICE REPAIR KIT NEW IN BOX
GORMAN RUPP 12590 FACTORY MECHANICAL SEAL SERVICE REPAIR KIT NEW IN BOX
$160.00
quality
Flowserve Mechanical Seal 1875 Part85 15AVP SilCar vs SilCar Viton Elastomers
Flowserve Mechanical Seal 1875 Part85 15AVP SilCar vs SilCar Viton Elastomers
$500.00
quality
FlowServe 550 split mechanical seal 1360593 assembly 162774
FlowServe 550 split mechanical seal 1360593 assembly 162774
$425.00
quality
NEW JOHN CRANE BF50878 MECHANICAL JOINT PUMP SHAFT SEAL 1 1 4IN 200139
NEW JOHN CRANE BF50878 MECHANICAL JOINT PUMP SHAFT SEAL 1 1 4IN 200139
$11.64
quality
LOT 18 NEW APV A100 0017 00 2MM THICK MECHANICAL SEAL O RING D390307
LOT 18 NEW APV A100 0017 00 2MM THICK MECHANICAL SEAL O RING D390307
$10.43
quality
NEW CHESTERTON 442 695816 MECHANICAL 43M SEAL STAINLESS REPLACEMENT PART 200263
NEW CHESTERTON 442 695816 MECHANICAL 43M SEAL STAINLESS REPLACEMENT PART 200263
$44.75
quality
NEW JOHN CRANE 611QBC SBR337 42 MECHANICAL SEAL STAINLESS PART FOR PUMP 200321
NEW JOHN CRANE 611QBC SBR337 42 MECHANICAL SEAL STAINLESS PART FOR PUMP 200321
$150.75
quality
3437 SEALOL 670 LHT SBF 217 60 mechanical seal 670LHTSBF21760 0986984
3437 SEALOL 670 LHT SBF 217 60 mechanical seal 670LHTSBF21760 0986984
$150.00
quality
JOHN CRANE B06528 3IN MECHANICAL PUMP SEAL STAINLESS REPLACEMENT PART B350205
JOHN CRANE B06528 3IN MECHANICAL PUMP SEAL STAINLESS REPLACEMENT PART B350205
$225.50
quality
Chesterton 155 14 O S Industtrial Mechanical seal
Chesterton 155 14 O S Industtrial Mechanical seal
$29.90
quality
JOHN CRANE M105006 TYPE 21 MECHANICAL 1 1 4IN FACE SEAL REPLACEMENT PART B253820
JOHN CRANE M105006 TYPE 21 MECHANICAL 1 1 4IN FACE SEAL REPLACEMENT PART B253820
$31.75
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
$23.99
quality
92647 New No Box Crane 52 104 870 804 Seal mechanical seal kit
92647 New No Box Crane 52 104 870 804 Seal mechanical seal kit
$36.13
quality
Multiquip Trash Pump Mechanical Seal Fits QP3TH QP2TH
Multiquip Trash Pump Mechanical Seal Fits QP3TH QP2TH
$148.98
quality
NEW FLOWSERVE MEB43486033 A 190MM ID MECHANICAL SEAL STAINLESS B253923
NEW FLOWSERVE MEB43486033 A 190MM ID MECHANICAL SEAL STAINLESS B253923
$50.75
quality
NEW MSOS 2125 AR COMPLETE MECHANICAL 2125 2 1 8IN PUMP SEAL REPLACEMENT B300503
NEW MSOS 2125 AR COMPLETE MECHANICAL 2125 2 1 8IN PUMP SEAL REPLACEMENT B300503
$38.75
quality
NEW MSOS SENA 656405 COMPLETE MECHANICAL 2125 2 1 8 IN PUMP SEAL B300506
NEW MSOS SENA 656405 COMPLETE MECHANICAL 2125 2 1 8 IN PUMP SEAL B300506
$38.75
quality
NEW MSOS 2125 AR SENA 656405 COMPLETE MECHANICAL 2125 2 1 8IN PUMP SEAL B300518
NEW MSOS 2125 AR SENA 656405 COMPLETE MECHANICAL 2125 2 1 8IN PUMP SEAL B300518
$38.75
quality
DAYTON PPHP51000219G Mechanical Seal Repair Kit G8415057
DAYTON PPHP51000219G Mechanical Seal Repair Kit G8415057
$201.07
quality
DAYTON PPHP51000212G Mechanical Seal Repair Kit G8102692
DAYTON PPHP51000212G Mechanical Seal Repair Kit G8102692
$131.14
quality
DAYTON PPR8ZN016G Mechanical SealSeat Assembly G8267743
DAYTON PPR8ZN016G Mechanical SealSeat Assembly G8267743
$32.16
quality
Ingersoll Rand CPM 10408C Pump Seal Repair Kit Industrial Mechanical Seal
Ingersoll Rand CPM 10408C Pump Seal Repair Kit Industrial Mechanical Seal
$149.99
quality
PPUP5007G Mechanical Seal Assembly
PPUP5007G Mechanical Seal Assembly
$34.55
quality
DAYTON PP21101625401G Mechanical Seal G7970051
DAYTON PP21101625401G Mechanical Seal G7970051
$68.81
quality
DAYTON PP800005G Mechanical Seal Assembly G8070404
DAYTON PP800005G Mechanical Seal Assembly G8070404
$64.53
quality
DAYTON PP211030112G Mechanical Seal G8409694
DAYTON PP211030112G Mechanical Seal G8409694
$41.00
quality
DAYTON PPO8ZN015G Mechanical SealSeat Assembly G8168623
DAYTON PPO8ZN015G Mechanical SealSeat Assembly G8168623
$29.92
quality
DAYTON PPO83N001G Mechanical SealSeat Assembly G7820836
DAYTON PPO83N001G Mechanical SealSeat Assembly G7820836
$36.31
quality
DAYTON PP201100061G Mechanical Seal G7918522
DAYTON PP201100061G Mechanical Seal G7918522
$208.54
quality
DAYTON PP820006G Mechanical Seal Assembly G7983166
DAYTON PP820006G Mechanical Seal Assembly G7983166
$64.53
quality
DAYTON PPO8ZN041G Mechanical SealSeat Assembly G8399307
DAYTON PPO8ZN041G Mechanical SealSeat Assembly G8399307
$47.35
quality
DAYTON PPL3315G Buna N Mechanical Seal G7900444
DAYTON PPL3315G Buna N Mechanical Seal G7900444
$32.16
quality
DAYTON 201100051 Mechanical Seal G8214202
DAYTON 201100051 Mechanical Seal G8214202
$120.02
quality
DAYTON 201100061 Mechanical Seal G8185326
DAYTON 201100061 Mechanical Seal G8185326
$201.69
quality
DAYTON PP201100071G Mechanical Seal G8035386
DAYTON PP201100071G Mechanical Seal G8035386
$136.95
quality
DAYTON PPHP51000222G Mechanical Seal Repair Kit G8241773
DAYTON PPHP51000222G Mechanical Seal Repair Kit G8241773
$67.77
quality
DAYTON PP810008G Mechanical Seal Assembly G8334076
DAYTON PP810008G Mechanical Seal Assembly G8334076
$64.53
quality
DAYTON PPHP51000203G Mechanical Seal Repair Kit G8124812
DAYTON PPHP51000203G Mechanical Seal Repair Kit G8124812
$63.25
quality
DAYTON PPO82N001G Mechanical SealSeat Assembly G8418663
DAYTON PPO82N001G Mechanical SealSeat Assembly G8418663
$33.28
quality
DAYTON PP201100031G Mechanical Seal G8177154
DAYTON PP201100031G Mechanical Seal G8177154
$58.64
quality
DAYTON 201100011 Mechanical Seal G8250776
DAYTON 201100011 Mechanical Seal G8250776
$42.83
quality
DAYTON PPO8ZN040G Mechanical SealSeat Assembly G7802313
DAYTON PPO8ZN040G Mechanical SealSeat Assembly G7802313
$46.48
quality
DAYTON PPR8ZN006G Mechanical SealSeat Assembly G7845887
DAYTON PPR8ZN006G Mechanical SealSeat Assembly G7845887
$32.16
quality
PP21103031602G Mechanical Seal
PP21103031602G Mechanical Seal
$39.05
quality
PPUP6003G Mechanical Seal Assembly
PPUP6003G Mechanical Seal Assembly
$68.55
quality
PPUP4004G Mechanical Seal Assembly
PPUP4004G Mechanical Seal Assembly
$34.55
quality
DAYTON 201100031 Mechanical Seal G7829841
DAYTON 201100031 Mechanical Seal G7829841
$58.64
quality
DAYTON PPO85N001G Mechanical SealSeat Assembly G8410631
DAYTON PPO85N001G Mechanical SealSeat Assembly G8410631
$60.34
quality
DAYTON PPHP51000206G Mechanical Seal Repair Kit G8176917
DAYTON PPHP51000206G Mechanical Seal Repair Kit G8176917
$90.89
quality
DAYTON PPR8ZN007G Mechanical SealSeat Assembly G7953897
DAYTON PPR8ZN007G Mechanical SealSeat Assembly G7953897
$33.28
quality
DAYTON PPO8ZN016G Mechanical SealSeat Assembly G8377187
DAYTON PPO8ZN016G Mechanical SealSeat Assembly G8377187
$45.86
quality
DAYTON PPL3316G Buna N Mechanical Seal G8289197
DAYTON PPL3316G Buna N Mechanical Seal G8289197
$64.28
quality
NEW FLOWSERVE JS 778866 MECHANICAL SEAL CERAMIC 7 3 8IN ID 8 7 8IN OD B201265
NEW FLOWSERVE JS 778866 MECHANICAL SEAL CERAMIC 7 3 8IN ID 8 7 8IN OD B201265
$33.75
quality
RX 686 NEW JOHN CRANE RG5301 MECHANICAL SEAL ASSEMBLY TYPE 8 1 SIZE 1500
RX 686 NEW JOHN CRANE RG5301 MECHANICAL SEAL ASSEMBLY TYPE 8 1 SIZE 1500
$199.00
quality
FLOWSERVE SPM600 MECHANICAL DUAL CARTRIDGE 4 IN STAINLESS PUMP SEAL B471002
FLOWSERVE SPM600 MECHANICAL DUAL CARTRIDGE 4 IN STAINLESS PUMP SEAL B471002
$1,000.00
quality
GOULDS PUMPS 10K100 Mechanical Seal
GOULDS PUMPS 10K100 Mechanical Seal
$225.88
quality
RX 687 NEW JOHN CRANE B091 51 MECHANICAL SEAL SIZE 1500 TYPE 1 DSP1624
RX 687 NEW JOHN CRANE B091 51 MECHANICAL SEAL SIZE 1500 TYPE 1 DSP1624
$45.00
quality
NEW BLACKMER 331880 MECHANICAL SEAL STEEL PUMP SEAL REPLACEMENT PART D458946
NEW BLACKMER 331880 MECHANICAL SEAL STEEL PUMP SEAL REPLACEMENT PART D458946
$105.00
quality
RX 689 NEW JOHN CRANE B086 47 MECHANICAL SEAL ASSEMBLY TYPE 2 SIZE 1250
RX 689 NEW JOHN CRANE B086 47 MECHANICAL SEAL ASSEMBLY TYPE 2 SIZE 1250
$45.00
quality
SEAL MECHANICAL VITON INTERVAC VACUUM PUMP 950075SAC915
SEAL MECHANICAL VITON INTERVAC VACUUM PUMP 950075SAC915
$218.88
quality
NEW BLACKMER 337765 MECHANICAL PUMP SEAL
NEW BLACKMER 337765 MECHANICAL PUMP SEAL
$155.00
quality
JOHN CRANE 611QGCSBR337 22 611Q MECHANICAL 1 3 8IN STAINLESS PUMP SEAL B460252
JOHN CRANE 611QGCSBR337 22 611Q MECHANICAL 1 3 8IN STAINLESS PUMP SEAL B460252
$325.00
quality
DELTA MECHANICAL SEAL AV30001125A SHAFT SIZE 1125
DELTA MECHANICAL SEAL AV30001125A SHAFT SIZE 1125
$69.99
quality
CHESTERTON MECHANICAL SEAL 180A R 2375 SHAFT SIZE
CHESTERTON MECHANICAL SEAL 180A R 2375 SHAFT SIZE
$99.99
quality
LOT 2 NEW PAC SEAL 712 6452 755 PUMP MECHANICAL SEAL D391438
LOT 2 NEW PAC SEAL 712 6452 755 PUMP MECHANICAL SEAL D391438
$17.43
quality
Flowserve Fybroc 1375 MECHANICAL SEAL 96940M Assembly NEW
Flowserve Fybroc 1375 MECHANICAL SEAL 96940M Assembly NEW
$87.65
quality
PAC SEAL 1R306 5 8 MECHANICAL SHAFT SEAL KIT
PAC SEAL 1R306 5 8 MECHANICAL SHAFT SEAL KIT
$17.99
quality
NEW FLOWSERVE PAC269VCX PUMP ALUMINUM MECHANICAL SEAL REPLACEMENT PART B201579
NEW FLOWSERVE PAC269VCX PUMP ALUMINUM MECHANICAL SEAL REPLACEMENT PART B201579
$11.64
quality
Chesterton 714 Ceramic Mechanical Pump SEAL 059651 size 36 shaft 4500 NEW NIB
Chesterton 714 Ceramic Mechanical Pump SEAL 059651 size 36 shaft 4500 NEW NIB
$19.99
quality
Didn"t find what your looking for? Search our real time inventory below...

Mechanical Seal

See More About:    Line Breaker        Gardner Bender        Heathkit Power        
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:    Antenna Fit        Circuit Board        Gas Valve        

Other Items People View After These Listings About