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All Single Spring Seals

  • Type n11, C, 1 Mechanical pump Seal - buy now

    185c Mechanical Seal (PS-185) – 1-1/4″

    185c Mechanical Seal (PS-185) – 1-1/4″

    Item #N/A

    Single Spring Mechanical Seal 185C — 1-1/4″| PS-185 Equivalent

    185c single spring mechanical seal, PS-185 / 185 equivalent. Fits 1-1/4″ shaft with 1.875″×0.437″ seat and Type N-11 (Type C/21) rotary head.

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

    Key specs: Shaft size: 1-1/4″ single spring seal • Seat: 1.875″ x 0.437″ cup • Rotary OD: 1.787″ • Working length: 1.062″

    Design & construction:
    Crimped rotary head (Type N-11)—similar to industry Type C / 21; can also replace Type D / 2 with a simple spring change (in most cases). 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/FKM elastomers

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

    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.

    Please click “specifications” below for OEM numbers and Pump Nameplate Data
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • 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

    188c Mechanical Seal (PS-188) – 7/8″

    188c Mechanical Seal (PS-188) – 7/8″

    Item #N/A

    Single Spring Mechanical Seal 188c | PS-188 Equivalent

    188c single spring mechanical seal, PS-188 / 188 equivalent. Fits 7/8″ shaft with 1.500″×.405″ seat and Type N-22 rotary head.

    Shaft Size: 7/8″  Seat Cup: 1.500″ x  o.405″ Rotary OD: 1.315″  Working Length: 1.437″

    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/FKM elastomers

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

    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.

    Please click “specifications” below for OEM numbers and Pump Nameplate Data
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • ps-100 , ps-200 , ps-201 mechanical seal- buy now!

    200c Mechanical Seal (PS-200) — 5/8″

    200c Mechanical Seal (PS-200) — 5/8″

    Mechanical Seal 200 — Type 166 (5/8″) | PS-200 Equivalent

    Equal to industry standard 200 / PS-200.
    Direct-fit Type 166 single-spring seal for pool/spa and small-pump applications—built with molded carbon / ceramic faces and Buna-N elastomers for dependable everyday service.

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

    Why choose 200 (PS-200):

    • Proven T-166 footprint for quick replacement

    • Reliable materials for clean-water, standard-chemistry systems

    Upgrades / Variations (same footprint)

    • 516 — Premium carbon face

    • 3867 — Premium + Viton

    • 200cv  — Molded carbon

    • 200cvss — Silicon Carbide / Silicon Carbide / Viton

    Have questions? Check out our Pool/Spa Small Pump 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
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • ps-100 , ps-200 , ps-201 mechanical seal- buy now!

    200CV Mechanical Seal (PS-200V-CMS) — 5/8″

    200CV Mechanical Seal (PS-200V-CMS) — 5/8″

    Mechanical Seal 200CV — Type 166 / T-16 (5/8″) | PS-200V-CMS Equivalent

    Equal to industry standard 200CV / PS-200V-CMS.
    Direct-fit Type 166 / T-16 single-spring seal for pool/spa and small-pump applications—built with molded carbon/ceramic faces and Viton/FKM elastomers for added chemical and temperature resistance.

    At-a-glance specs: 5/8″ shaft • 1.25″ × 0.406″ cup seat • Molded carbon/ceramic faces • Viton/FKM elastomers

    Why choose 200CV:

    • Viton/FKM upgrade handles higher chlorine, heat, and chemicals better than Buna

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

    Upgrades / Variations (same footprint)

    • 200c — Basic (Buna)

    • 516 — Premium carbon face (Buna)

    • 3867 — Premium + Viton

    • 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
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • ps-100 ps-200 ps-201 pump seal sic/sic/vit

    200CVSS Mechanical Seal (PS-200V-SC-SC) — 5/8″

    200CVSS Mechanical Seal (PS-200V-SC-SC) — 5/8″

    Mechanical Seal 200CVSS — Type 166 / T-16 (5/8″) | PS-200v-SC-SC Equivalent

    Equal to industry standard 200CVSS / PS-200v-SC-SC.
    Direct-fit Type 166 / T-16 single-spring seal for pool/spa and small-pump applications—engineered with Silicon Carbide faces and Viton/FKM elastomers for added chemical and temperature resistance.

    At-a-glance specs: 5/8″ shaft • 1.25″ × 0.406″ cup seat • Silicon Carbide / Silicon Carbide faces • Viton elastomers

    Why choose 200CVSS:

    • SiC/SiC faces deliver excellent wear and heat resistance especially for abrasive & chemical-rich environments

    • Viton tolerates higher chlorine, heat, and chemicals than Buna

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

    Variations (same footprint)

    • 200c — Basic (Buna)

    • 516 — Premium carbon face (Buna)

    • 3867 — Premium + Viton

    • 200cv — Molded carbon

    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
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • 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

    2016C Mechanical Seal (PS-2016) – 5/8″

    2016C Mechanical Seal (PS-2016) – 5/8″

    Item #N/A

    Single Spring Mechanical Seal 2016c | PS-2016 Equivalent

    2016c single spring mechanical seal, PS-2016 / 2016 equivalent. Fits 5/8″ shaft with 1.250″×.405″ seat and Type N-22 rotary head.

    Shaft size: 5/8″ Seat: 1.250″ x 0.405″ cup Rotary OD: 1.063″ Working Length: 1.375″

    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/FKM elastomers

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

    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.

    Please click “specifications” below for OEM numbers and Pump Nameplate Data
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • ps-100 , ps-200 , ps-201 mechanical seal- buy now!

    201C Mechanical Seal (PS-201) — 3/4″

    201C Mechanical Seal (PS-201) — 3/4″

    Mechanical Seal 201c — Type 166 (3/4″) | PS-201 Equivalent

    Equal to industry standard 201 / PS-201. Direct-fit replacement for PS-201 single-spring seals in pool/spa and small-pump applications. Engineered with molded carbon/ceramic faces and Buna-N elastomers.

    At-a-glance specs: 3/4″ shaft • 1.375″ × 0.406″ cup seat • Type 166 • Molded carbon/ceramic faces • Buna-N elastomers

    Why choose 201 (PS-201)
    Reliable everyday build for clean-water, standard-chemistry systems with quick, drop-in fit.

    Upgrades / Variations (same footprint)

    • 851 — Premium carbon face

    • 3868 — Premium + Viton

    • 201CV — Molded carbon

    • 201CVSS — Silicon Carbide / Silicon Carbide / Viton®

    Have questions? Check out our Pool/Spa Small Pump 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.

    Please click “specifications” below for OEM numbers and Pump Nameplate Data
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • ps-100 , ps-200 , ps-201 mechanical seal- buy now!

    201CV Mechanical Seal (PS-201V-CMS) — 3/4″

    201CV Mechanical Seal (PS-201V-CMS) — 3/4″

    Mechanical Seal 201cv — Type 166 / T-16 (3/4″) | PS-201V-CMS Equivalent

    Equal to industry standard 201cv / PS-201V-CMS.
    Direct-fit Type 166 / T-16 single-spring seal for pool/spa and small-pump applications—built with molded carbon/ceramic faces and Viton elastomers for added chemical and temperature resistance.

    At-a-glance specs: 3/4″ shaft • 1.375″ × 0.406″ cup seat • Molded carbon/ceramic faces • Viton/FKM elastomers

    Why choose this 201cv (PS-201v-cms):

    • Viton handles higher chlorine, heat, and chemicals better than Buna

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

    Upgrades / Alternatives (same footprint)

    • 201c — Basic (Buna)

    •  851  — Premium carbon face (Buna)

    • 3868 — Premium + Viton (machined carbon)

    • 201cvss — 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
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • ps-100 ps-200 ps-201 pump seal sic/sic/vit

    201CVSS Mechanical Seal (PS-201V-SC-SC) — 3/4″

    201CVSS Mechanical Seal (PS-201V-SC-SC) — 3/4″

    Mechanical Seal 201CVSS — Type 166 / T-16 (3/4″) | PS-201V-SC-SC Equivalent

    Equal to industry standard 201CVSS / PS-201V-SC-SC.
    Direct-fit Type 166 / T-16 single-spring seal for pool/spa and small-pump applications—engineered with hard faces and chemical-resistant elastomers for longer service life.

    At-a-glance spec: 3/4″ shaft • 1.375″ × 0.406″ cup seat • Silicon Carbide / Silicon Carbide faces • Viton/FKM elastomers

    Why choose 201CVSS:

    • SiC/SiC faces provide excellent wear and heat resistance in abrasive and chemical rich environments

    • Viton handles higher chlorine, heat, and chemicals better than Buna

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

    Variations (same footprint)

    • 201c — Basic (Buna)

    • 851 — Premium carbon face (Buna)

    • 3868— Premium + Viton

    • 201cv — Molded carbon

    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
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in