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Step 1

Select Shaft Size

Next

Video Tutorial: How to Measure Seal Shaft Size

Select Operating Height More Info

Next

Video Tutorial: How to Measure Seal Operating Height



Operating Heights by Shaft Size (Roll over to see operating height options)

.250 inN/A .312 inN/A .375 inN/A .437 inN/A .500 inN/A .562 inN/A .590 inN/A .625 in
  • Poundage: 11 lb

  • .615
  • .609
  • .718
  • .734
  • .765
  • .811
  • .812
  • .859
  • .875
  • .937
  • 1.093
  • 1.187
  • 1.312
.750 in
  • poundage: 14-15 lb

  • .718
  • .615
  • .687
  • .843
  • .875
  • 1.000
  • 1.187
  • 1.250
  • 1.312
.787 in
  • poundage: 15 lb

  • .937
.875 in
  • poundage: 16 lb

  • .718
  • .812
  • .937
  • 1.250
  • 1.375
  • 1.625
.937 in
  • poundage: 18 lb

  • 1.656
.984 in
  • poundage: 18 lb

  • 1.000
1.000 in
  • poundage: 20 lb

  • .471
  • .718
  • .750
  • .812
  • .834
  • .985
  • 1.000
  • 1.062
  • 1.187
  • 1.562
  • 1.625
  • 1.875
  • 2.312
1.062 in
  • poundage: 22 lb

  • 1.062
  • 1.593
1.125 in
  • poundage: 24 lb

  • 1.062
  • 1.187
  • 1.562
  • 1.625
  • 2.000
  • 2.125
  • 2.375
1.181 in
  • Poundage: 25 lb

  • 1.062
1.187 in
  • Poundage: 25 lb

  • 1.062
  • 1.187
  • 1.625
  • 2.375
1.250 in
  • poundage: 27 lb

  • 1.000
  • 1.062
  • 1.187
  • 1.625
  • 1.750
  • 1.875
  • 2.000
  • 2.281
  • 2.375
1.375 in
  • poundage: 30 lb

  • .900
  • .925
  • 1.093
  • 1.125
  • 1.156
  • 1.187
  • 1.256
  • 1.437
  • 1.625
  • 1.687
  • 1.937
  • 2.000
  • 2.187
  • 2.437
1.437 in
  • poundage: 30 lb

  • 1.125
  • 1.250
  • 1.516
  • 1.688
1.500 in
  • poundage: 30 lb

  • 1.125
  • 1.187
  • 1.625
  • 1.687
  • 1.688
  • 1.875
  • 2.000
  • 2.062
  • 2.437
1.562 in
  • poundage: 30-32 lb

  • 1.688
1.625 in
  • poundage: 30-32 lb

  • 1.312
  • 1.375
  • 2.000
  • 2.125
1.750 in
  • poundage: 32 lb

  • 1.062
  • 1.125
  • 1.312
  • 1.375
  • 1.437
  • 1.625
  • 2.000
  • 2.125
  • 2.375
  • 2.750
  • 2.875
1.771 in
  • Poundage: 32 lb

  • 2.125
  • 3.000
1.875 in
  • Poundage: 35 lb

  • 1.500
  • 1.750
  • 2.062
  • 2.125
  • 2.437
  • 2.500
  • 3.000
2.000 in
  • Poundage: 35 lb

  • 1.062
  • 1.250
  • 1.500
  • 2.125
  • 2.218
2.062 in
  • Poundage: 35 lb

  • 2.375
2.125 in
  • Poundage: 35 lb

  • 1.625
  • 1.687
  • 2.125
  • 2.375
  • 2.562
  • 3.375
2.250 in
  • Poundage: 35 lb

  • 1.187
  • 1.437
  • 1.688
  • 1.875
  • 2.125
  • 2.375
  • 2.750
  • 3.375
2.375 in
  • Poundage: 35 lb

  • 1.813
  • 2.125
  • 2.500
  • 2.875
2.500 in
  • Poundage: 35 lb

  • 1.813
  • 2.125
  • 2.500
  • 2.656
2.625 in
  • Poundage: 35 lb

  • 1.937
  • 2.750
2.750 in
  • Poundage: 35 lb

  • 1.125
  • 1.937
  • 3.750
3.000 in
  • Poundage: 42 lb

  • 1.125
  • 1.312
  • 2.062
  • 2.500
  • 2.750
  • 2.813
  • 3.125
3.250 in
  • Poundage: 45 lb

  • 1.562
  • 2.187
3.500 in
  • Poundage: 45 lb

  • 2.187

Select Seat OD

Next

Video Tutorial: How to Measure Seal Seat OD

Select Seat Thickness

Next

Video Tutorial: How to Measure Seal Seat Thickness

Step 5(optional)

Select Head Type More Info



Select Materials More Info

Video Tutorial: How to Identify Heads & Materials

Head Types

  • A Head
  • B Head
  • C Head
  • C Head with Tapered Spring
  • D Head
  • E Head
  • G Head
  • K Head
  • R Head
  • T Head


Materials


  • Buna
  • Buna-N, also known as Nitrile. The most common rubber used in Mechanical seals. Suitable for water, petroleum oils and fluids, mild chemicals. Not suitable for Biodiesel/Biofuel, Propylene glycol, strong acids or caustics. Life expectancy drops as water temperatures rise above 180F.

  • EPR
  • EPR also known as EPM, EPDM and Ethylene propylene. Commonly used for hot water, Propylene glycol, hi pH solutions. Not suitable for petroleum based fluids and oils.

  • Viton
  • Viton also known as flourocarbon. Used for many chemical and higher temperature applications, including Biodiesel/Biofuel. Not suitable for Propylene glycol. Viton can be recognized by its weight. It is approximately 50% more dense than Buna-N or EPR which is enough to be measured on a high resolution scale.

  • Aflas
  • Aflas is serviceable in applications involving strong acids and bases, high temperatures, steam and petroleum products. It is considered a premium priced rubber and is not readily available except as o-rings.

  • Neoprene
  • Neoprene is not commonly used in mechanical seals. Special applications include refrigerants and ammonia/oil service

  • PTFE
  • PTFE more popularly known by DuPont's trademark Teflon is virtually chemically inert and can operate at high temperatures. Its draw back is that it has poor memory (ability to bounce back to shape) which limits its applications.

  • Carbon
  • Carbon is black, can be scratched, and is the most common face material - good for most chemicals. Can be used to mate with most any other face material

  • P-66 Carbon
  • P-66 carbon is black, harder than standard carbon and used to reduce damage to faces caused by abrasives or poor lubrication.

  • Molded Plastic
  • Molded plastic looks like carbon, is a less expensive substitute for carbon in light duty service such as pool pumps.

  • Ceramic
  • Ceramic is white or off white and is the second most common face material- good for most chemicals. Can only be mated with molded plastic or carbon. Not to be used in applications where the seal can see a quick drastic change in temperature as the ceramic can crack (thermal shock). This problem is common in portable pumps that start up dry until they prime. Ceramics are brittle and can be damaged from mechanical shock.

  • Ni-Resist
  • Ni-resist looks like steel. This is a high nickel content cast iron and can only be mated with molded plastic or carbons. It is softer than ceramic and subject to corrosion. Commonly used where seal is subject to thermal shock. Pump manufacturers will supply as original equipment in order to reduce warranty claims due to mechanical and thermal shock issues.

  • Silicon Carbide
  • Silicon Carbide is dark grey, light weight and very hard. It cannot be scratched and is brittle like ceramic but thermally stable. Can be mated with carbon, silicon carbide or tungsten carbide. Used to reduce wear from abrasive media, poor lubrication and thermal shocking.

  • Tungsten Carbide
  • Tungsten carbide looks like steel but is much heavier. It is very hard, cannot be scratched and is thermally stable. It is not brittle and can be mated with carbon, silicon carbide and tungsten carbide. Used to reduce wear from abrasive media.