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Single Spring Seal

  • 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

    204C Mechanical Seal (PS-204) – 1-1/8″

    204C Mechanical Seal (PS-204) – 1-1/8″

    Item #N/A

    Single Spring Mechanical Seal 204c | PS-204 Equivalent

    204c single spring mechanical seal, PS-204 / 204 equivalent. Fits 1-1/8″ shaft with 1.750″×.437″ seat and Type N-22 rotary head.

    Shaft size: 1-1/8″ Seat: 1.750″ x .437″ cup, Rotary OD: 1.650″, Working Length: 1.687″

    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
  • 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

    205C Mechanical Seal (PS-205) – 1-3/4″

    205C Mechanical Seal (PS-205) – 1-3/4″

    Item #N/A

    Single Spring Mechanical Seal 205c | PS-205 Equivalent

    205c single spring mechanical seal, PS-205 / 205 equivalent. Fits 1-3/4″ shaft with 2.500″×.500″ seat and Type N-22 rotary head.

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

    Key specs: Shaft size: 1-3/4″ single spring seal • Seat: 2.500″ x .500″ • Rotary OD: 2.402″ • Working length: 2.000″

    Design & construction:
    Crimped rotary head (Type N-22)—equivalent to Pac-Seal T-21 (long working length) and Burgmann MG9, can replace seal type E & 1 seal heads. Electro-polished 304 stainless steel metal parts. Elastomeric bellows. Non-directional (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

    Seal Model Product Line Replaces Features & Focus
    205C N Line PS-514 Easy installation & broad compatibility
    SPS-205 SPS Line PS-514 Premium build for longevity & like for like replacement.

    Both PS replacements? Which should I choose? Check out more on our Seal House Seal Guide

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

    2120C Mechanical Seal (PS-2120) – 2-1/2″

    2120C Mechanical Seal (PS-2120) – 2-1/2″

    Single Spring Mechanical Seal 2120C — 2-1/2″ | PS-2120 Equivalent

    2120c single spring mechanical seal, PS-2120 / 2120 equivalent. Fits 2-1/2″ shaft with 3.375″×0.562″ seat and Type N-11 (Type C/21) rotary head.

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

    Key specs: Shaft size: 2-1/2″ single spring seal • Seat: 3.375″ x 0.562″ • Rotary OD: 3.209″ • Working length: 1.812″

    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).

    Material: CAR/CER/NIT — Carbon vs. Ceramic faces, Nitrile 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
  • Type n11, C, 1 Mechanical pump Seal - buy now

    235C Mechanical Seal (PS-235) – 1″

    235C Mechanical Seal (PS-235) – 1″

    Item #N/A

    Single Spring Mechanical Seal 235C — 1″ | PS-235 Equivalent

    235c single spring mechanical seal, PS-235 / 235 equivalent. Fits 1″ shaft with 1.625″×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″ single spring seal • Seat: 1.625″ x 0.437″ cup • Rotary OD: 1.547″ • Working length: 1.ooo”

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

    238C Mechanical Seal (PS-238) – 1-5/8″

    238C Mechanical Seal (PS-238) – 1-5/8″

    Item #N/A

    Single Spring Mechanical Seal 238C — 1-5/8″| PS-238 Equivalent

    238c single spring mechanical seal, PS-238 / 238 equivalent. Fits 1-5/8″ shaft with 2.375″×.500″ seat and Type N-11 (Type C/21) rotary head.

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

    Key specs: Shaft size: 1-5/8″ single spring seal • Seat: 2.375″ x .500″ cup • Rotary OD: 2.185″ • Working length: 1.375″

    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 menu above)

    • CAR/CER/NIC — 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 Pre-Cut Gaskets.

    Please click “specifications” below for OEM numbers and Pump Nameplate Data
    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • Type n11, C, 1 Mechanical pump Seal - buy now

    267c Mechanical Seal (PS-267) – 2″

    267c Mechanical Seal (PS-267) – 2″

    Item #N/A

    Single Spring Mechanical Seal 267C — 2″ | PS-267 Equivalent

    267c single spring mechanical seal, PS-267 / 267 equivalent. Fits 2″ shaft with 2.750″× 0.500″ seat and Type N-11 (Type C/21) rotary head.

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

    Key specs: Shaft size: 2″ single spring seal • Seat: 2.750″ x 0.500″ cup • Rotary OD: 2.587″ • Working length: 1.500″

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

    268C Mechanical Seal (PS-268) – 2-3/8″

    268C Mechanical Seal (PS-268) – 2-3/8″

    Item #N/A

    Single Spring Mechanical Seal 268C — 2-3/8″ | PS-268 Equivalent

    268c single spring mechanical seal, PS-268 / 268 equivalent. Fits 2-3/8″ shaft with 3.250″× 0.562″ seat and Type N-11 (Type C/21) rotary head.

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

    Key specs: Shaft size: 2-3/8″ single spring seal • Seat: 3.250″ x 0.562″ cup • Rotary OD: 3.134″ • Working length: 1.812″

    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
  • PS-3015 mechanical seal pump buy now

    3015 Mechanical Seal (PS-3015)— 1-3/8″

    3015 Mechanical Seal (PS-3015)— 1-3/8″

    Single Spring Mechanical Seal 3015 | PS-3015 Equivalent (G-Type / 2100)

    Direct-fit aftermarket 3015 / PS-3015 mechanical pump seal built in the G-Type / John Crane 2100 style—a compact, unitized, single-spring elastomer bellows seal design widely used across pump applications. Ideal for repairs where you need OEM-style fit and reliable sealing performance.

    Key specs: • Shaft size: 1-3/8″ (1.375″) single spring seal • Seat: 2.000″ x 0.437″ • Rotary OD: 1.929″ • Working length: 1.024″

    Material build: VIT / SIC / SIC — Viton elastomers; Silicon Carbide vs. Silicon Carbide faces
    Excellent chemical/temperature resistance and wear durability.

    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.

    Weight 1 lbs
    Dimensions 8 × 6 × 4 in
  • PS-3020 mechanical seal pump, buy now

    3020 Mechanical Seal (PS-3020)— 2-1/8″

    3020 Mechanical Seal (PS-3020)— 2-1/8″

    Single Spring Mechanical Seal 3020 | PS-3020 Equivalent (G-Type / 2100)

    Direct-fit aftermarket 3020 / PS-3020 mechanical pump seal built in the G-Type / John Crane 2100 style for reliable, leak-tight performance. This is a common single-spring seal used across industrial and HVAC/hydronic pump applications—match dimensions and OEM references before ordering.

    Key specs: • Shaft size: 2-1/8″ (2.125″) single spring seal • Seat: 3.000″ x 0.562″ • Rotary OD: 2.717″ • Working length: 1.181″

    Material build (standard)

    • VIT / SIC / SIC — Viton elastomers; Silicon Carbide vs. Silicon Carbide faces
      Excellent chemical/temperature resistance and wear durability.

    Fitment

    • O-ring seat design

    • Listed as compatible with VSC-style pump assemblies

    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.

    Weight 1 lbs
    Dimensions 8 × 6 × 4 in