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Shaft Seals

  • N22 pump seal ps-2016, ps-4518 ps-188 ps-754 ps-204 ps-361 ps-354 ps-305 ps-745 ps-205 ps-523 ps-479 ps-537 ps-323

    479c

    479c

    Item #N/A

    Single Spring Mechanical Seal 479c | PS-479 Equivalent

    Equal to industry standard number 479 / PS-479

    Shaft size: 2″ Single spring mechanical seal with 2.750″ x .500″ cup seat, 2.587″ rotary OD, 2.125″ working length

    Crimped rotary head type N-22. Utilized in centrifugal pumps, mixers, rotating equipment, and further apparatus.

    Interchange / replacements:

    • Equivalent to Pac-Seal T-21 (long working length) and Burgmann MG9

    • Can replace Type E and Type 1 in many applications (confirm dimensions)

    Design & construction:

    • Electro-polished 304 stainless steel metal parts

    • Elastomeric bellows for stable sealing and easy installation

    • Independent of shaft rotation

    Material options (select above):

    • CAR/CER/NIT — Carbon/Ceramic, Nitrile elastomers

    • CAR/CER/VIT — Carbon/Ceramic, Viton® elastomers

    • SIC/SIC/VIT — Silicon Carbide/Silicon Carbide, Viton® elastomers

    Please click “specifications” below for OEM numbers and Pump Nameplate Data

    Have questions? Check out our Single Spring Seal Guide  or call us anytime—we’re here to help.

    Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

    Looking for more? Shop Pump Repair Kits, Parts & Accessories, and  Gaskets.

    View Product
  • Buy PS-4801

    4801

    4801

    Single Spring Mechanical Seal 4801 | PS-4801 Equivalent

    Direct-fit G-Type replacement equal to industry standard 4801 and PS-4801. Built to the 2-1/2″ John Crane 2100 style for reliable, leak-tight performance.

    Key specs: • Shaft size: 2-1/2″ single spring seal • Seat: 3.375″ × 0.562″ • Rotary OD: 3.268″ • Working length: 1.299″

    Standard material build

    • SC / SC / VIT — Silicon Carbide vs. Silicon Carbide faces; Viton elastomers
      (Many OEM builds use a carbon rotary—this version is upgraded to SiC/SiC for longer life.)

    Seat style

    • Notched O-ring seat — Hydromatic upper configuration

    Cross-references

    • 4801 / PS-4801

    • Industry standard G-Type / John Crane 2100 

    Please click “specifications” below for OEM numbers and Pump Nameplate Data

    Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

    Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Pre-Cut Gaskets.

    View Product
  • buy PS-514 Pump Seal

    514c

    514c

    Item #N/A

    Single Spring Mechanical Seal 514C — 1-5/8″ | PS-514 Equivalent

    Equal to: Industry standard 514 / PS-514

    Typical applications: Centrifugal pumps, mixers, and other rotating equipment.

    Key specs: Shaft size: 1-5/8″ single spring seal • Seat: 2.37″ x 0.500″ • Rotary OD: 2.185″ • Working length: 1.375″

    Design & construction:
    Crimped rotary head (Type N-33)—equivalent to Pac-Seal T-21 (tapered spring) and Burgmann MG9, can replace seal type D & 2 type seal heads. Tapered spring for wide base to fit over impeller hub or other similar feature. Electro-polished 304 stainless steel metal parts. Elastomeric bellows. Non-directional (independent of shaft rotation).

    Materials available (choose from dropdown)

    • CAR/CER/NIT — Carbon vs. Ceramic faces, Nitrile elastomers

    • CAR/CER/VIT — Carbon vs. Ceramic faces, Viton® elastomers

    • SIC/SIC/VIT — Silicon Carbide vs. Silicon Carbide faces, Viton® elastomers

    Please click “specifications” below for OEM numbers and Pump Nameplate Data

    Have questions? Check out our Single Spring Seal Guide  or call us anytime—we’re here to help.

    Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

    Looking for more? Shop Pump Repair Kits, Parts & Accessories, and  Gaskets.

    View Product
  • ps-100 , ps-200 , ps-201 mechanical seal- buy now!

    516

    516

    Mechanical Seal 516 — Type 166 / T-16 (5/8″) | PS-516 Equivalent

    Equal to industry standard 516 / PS-516.
    Direct-fit Type 166 / T-16 single-spring seal for pool/spa and small-pump applications—built with a machined carbon/ceramic face set and Buna-N elastomers for dependable everyday service.

    At-a-glance specs: 5/8″ shaft • 1.25″ × 0.406″ cup seat • Machined carbon/ceramic faces • Buna-N elastomers

    Why choose 516 (PS-516):

    • T-16 footprint for quick, drop-in replacement

    • Machined carbon face for smoother sealing vs. molded carbon

    • Reliable materials for standard pool/spa chemistry

    Upgrades / Variations (same footprint)

    •  200 — Basic (Buna)

    • 3867 — Premium + Viton

    • 200cv — Molded carbon

    • 200cvss — Silicon Carbide / Silicon Carbide / Viton

    Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

    Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Pre-Cut Gaskets.

    Have questions? Check out our Pool/Spa Small Pump Guide or call us anytime—we’re here to help.

    Please click “specifications” below for OEM numbers and Pump Nameplate Data
    View Product
  • N22 pump seal ps-2016, ps-4518 ps-188 ps-754 ps-204 ps-361 ps-354 ps-305 ps-745 ps-205 ps-523 ps-479 ps-537 ps-323

    523c

    523c

    Item #N/A

    Single Spring Mechanical Seal 523c | PS-523 Equivalent

    Equal to industry standard number 523 / PS-523

    Shaft siz: 1-7/8″ single spring mechanical seal with 2.625″ x .500″ cup seat, 2.520″ rotary OD, 2.125″ working length

    Crimped rotary head type N-22. Utilized in centrifugal pumps, mixers, rotating equipment, and further apparatus.

    Interchange / replacements:

    • Equivalent to Pac-Seal T-21 (long working length) and Burgmann MG9

    • Can replace Type E and Type 1 in many applications (confirm dimensions)

    Design & construction:

    • Electro-polished 304 stainless steel metal parts

    • Elastomeric bellows for stable sealing and easy installation

    • Independent of shaft rotation

    Material options (select above):

    • CAR/CER/NIT — Carbon/Ceramic, Nitrile elastomers

    • CAR/CER/VIT — Carbon/Ceramic, Viton® elastomers

    • SIC/SIC/VIT — Silicon Carbide/Silicon Carbide, Viton® elastomers

    Please click “specifications” below for OEM numbers and Pump Nameplate Data

    Have questions? Check out our Single Spring Seal Guide  or call us anytime—we’re here to help.

    Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

    Looking for more? Shop Pump Repair Kits, Parts & Accessories, and  Gaskets.

    View Product
  • N22 pump seal ps-2016, ps-4518 ps-188 ps-754 ps-204 ps-361 ps-354 ps-305 ps-745 ps-205 ps-523 ps-479 ps-537 ps-323

    537c

    537c

    Item #N/A

    Single Spring Mechanical Seal 537c | PS-537 Equivalent

    Equal to industry standard number 537 / PS-537

    Shaft size: 2-1/8″ single spring mechanical seal with 3.000″ x .562″ cup seat, 2.776″ rotary OD, 2.375″ working length

    Crimped rotary head type N-22. Utilized in centrifugal pumps, mixers, rotating equipment, and further apparatus.

    Interchange / replacements:

    • Equivalent to Pac-Seal T-21 (long working length) and Burgmann MG9

    • Can replace Type E and Type 1 in many applications (confirm dimensions)

    Design & construction:

    • Electro-polished 304 stainless steel metal parts

    • Elastomeric bellows for stable sealing and easy installation

    • Independent of shaft rotation

    Material options (select above):

    • CAR/CER/NIT — Carbon/Ceramic, Nitrile elastomers

    • CAR/CER/VIT — Carbon/Ceramic, Viton® elastomers

    • SIC/SIC/VIT — Silicon Carbide/Silicon Carbide, Viton® elastomers

    Please click “specifications” below for OEM numbers and Pump Nameplate Data

    Have questions? Check out our Single Spring Seal Guide  or call us anytime—we’re here to help.

    Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

    Looking for more? Shop Pump Repair Kits, Parts & Accessories, and  Gaskets.

    View Product
  • Buy ps-6261 seal

    6261

    6261

    Single Spring Mechanical Seal 6261 | PS-6261 Equivalent

    Direct-fit G-Type replacement equal to industry standard 6261 / PS-6261. Designed to the John Crane 2100 style for reliable, leak-tight performance.

    Key specs: • Shaft size: 1-1/4″ single spring seal • Seat: 1.875″ x .437″ • Rotary OD: 1.811″ • Working length: 1.062″

    Material build

    • BUNA / CAR / CER — Buna-N elastomers; Carbon vs. Ceramic faces

    Compatible components

    • Sta-Rite DHH-169 and 13910 Berkely sleeves

    Please click “specifications” below for OEM numbers and Pump Nameplate Data

    Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

    Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Pre-Cut Gaskets.

    View Product
  • buy ps-680c ps-4240 seal

    680c / 4240c

    680c / 4240c

    Item #N/A

    Mechanical Seal 680C / 4240C — Type 166 (5/8″) | Direct-Fit Replacements

    Drop-in equivalent for common Type 16, G, A, 6, AV, 2100 styles.
    Built for pool/spa and small-pump service with a precision finish and OEM-friendly dimensions.

    At-a-glance specs: 5/8″ shaft • 1.187″ × 0.288″ / 0.296″ cup seat (verify seat thickness) • Type 166 footprint

    Why choose 680C / 4240C:

    • Premium carbon face (not molded): Our Carbon/Ceramic builds use precision-machined, resin-impregnated carbon—not plastic/phenolic like PS-702 and similar equals—for smoother sealing and longer life.

    • Direct-fit crossovers: Replaces PS-702, PS-4240, PS-4462, PS-518, PS-701, PS-4284.

    Material options (select from dropdown)

    • CAR/CER/NIT — Standard build with machined carbon vs. ceramic, Nitrile elastomers.

    • CAR/CER/VIT — Same machined carbon/ceramic with Viton® for higher chlorine, temperature, and chemicals.

    • SIC/SIC/VIT — Silicon Carbide vs. Silicon Carbide with Viton® for maximum wear and heat resistance.

    • CAR/SIC/VIT — Direct replacement choice for PS-4284.

    Have questions? Check out our Single Spring Seal Guide  or call us anytime—we’re here to help.

    Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

    Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Pre-Cut Gaskets.

    Please click “specifications” below for OEM numbers and Pump Nameplate Data
    View Product
  • N22 pump seal ps-2016, ps-4518 ps-188 ps-754 ps-204 ps-361 ps-354 ps-305 ps-745 ps-205 ps-523 ps-479 ps-537 ps-323

    745c

    745c

    Item #N/A

    Single Spring Mechanical Seal 745c | PS-745 Equivalent

    Equal to industry standard number 745 / PS-745

    Shaft size: 1-5/8″ single spring mechanical seal with 2.375″ x .500″ cup seat, 2.185″ rotary OD, 2.000″ working length

    Crimped rotary head type N-22. Utilized in centrifugal pumps, mixers, rotating equipment, and further apparatus.

    Interchange / replacements:

    • Equivalent to Pac-Seal T-21 (long working length) and Burgmann MG9

    • Can replace Type E and Type 1 in many applications (confirm dimensions)

    Design & construction:

    • Electro-polished 304 stainless steel metal parts

    • Elastomeric bellows for stable sealing and easy installation

    • Independent of shaft rotation

    Material options (select above):

    • CAR/CER/NIT — Carbon/Ceramic, Nitrile elastomers

    • CAR/CER/VIT — Carbon/Ceramic, Viton® elastomers

    • SIC/SIC/VIT — Silicon Carbide/Silicon Carbide, Viton® elastomers

    Please click “specifications” below for OEM numbers and Pump Nameplate Data

    Have questions? Check out our Single Spring Seal Guide  or call us anytime—we’re here to help.

    Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

    Looking for more? Shop Pump Repair Kits, Parts & Accessories, and  Gaskets.

    View Product

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