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Pool/Small Pump Seals

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

    516 Mechanical Seal (PS-516) — 5/8″

    516 Mechanical Seal (PS-516) — 5/8″

    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
    Weight .25 lbs
    Dimensions 1.5 × 1.5 × 1.25 in
  • buy ps-680c ps-4240 seal Goulds 10k10

    680c / 702c Mechanical Seal (PS-680 / PS-702) — 5/8″

    680c / 702c Mechanical Seal (PS-680 / PS-702) — 5/8″

    Item #N/A

    680c / 702c Mechanical Seal (PS-680 / PS-702) — 5/8″

    The 680c / 702c mechanical seal is a direct-fit 5/8″ shaft seal, the PS-680 and PS-702 equivalent. It is built to OEM-equivalent standards or higher with a Type 166 footprint and a quality molded carbon face for dependable pool, spa, and small-pump service. Available in multiple material builds — see the options below.

    Molded Carbon Face 
    This 680c / 702c uses a quality molded carbon face — a dependable build for pool, spa, and small-pump service, with smooth sealing and reliable life. For the premium machined carbon version, see our 4240c / Goulds 10K10 seal.

    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″ cup seat (verify seat thickness) • Type 166 footprint

    Cross Reference: Replaces PS-702, 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
    Weight .25 lbs
    Dimensions 1.5 × 1.5 × 1.25 in
  • ps-100 , ps-200 , ps-201 mechanical seal- buy now!

    851 Mechanical Seal (PS-851) —3/4″

    851 Mechanical Seal (PS-851) —3/4″

    Mechanical Seal 851 — Type 166 / T-16 (3/4″) | PS-851 Equivalent

    Equal to industry standard 851 / PS-851.
    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 reliable everyday service.

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

    Why choose 851 (PS-851):

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

    • Machined carbon face for smoother sealing vs. molded carbon

    • Dependable materials for standard pool/spa chemistry

    Upgrades / Variations (same footprint)

    • 201c — Basic (Buna)

    • 3868 — Premium + Viton

    • 201cv  — Molded 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 .25 lbs
    Dimensions 1.5 × 1.5 × 1.25 in
  • ps-100 , ps-200 , ps-201 mechanical seal- buy now!

    957 Mechanical Seal (PS-957) — 5/8″

    957 Mechanical Seal (PS-957) — 5/8″

    Mechanical Seal 957 — Type 166 / T-16 (5/8″) | PS-957 Equivalent

    Equal to industry standard 957 / PS-957.
    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 reliable everyday service.

    At-a-glance specs: 5/8″ shaft • 1.187″ × 0.343″ cup seat • Machined carbon/ceramic faces • Buna-N elastomers

    Why choose 957 (PS-957):

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

    • Machined carbon face for smoother sealing vs. molded carbon

    • Dependable materials for standard pool/spa chemistry

    Upgrades / Variations (same footprint):

    • 100c  — Basic

    • 3866 — Premium + Viton

    • 100cv — Molded carbon

    • 100cvss  — 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 .25 lbs
    Dimensions 1.5 × 1.5 × 1.25 in
  • ps-1000 ,ps-961 ps-3865 mechanical seal

    961 Mechanical Seal (PS-961) — 5/8″

    961 Mechanical Seal (PS-961) — 5/8″

    Mechanical Seal 961 — T-6A (5/8″) | PS-961 Equivalent

    Equal to industry standard 961 / PS-961.
    Direct-fit T-6A single-spring seal for pool/spa and small-pump applications—built with a machined carbon face for smoother sealing and longer life in everyday service.

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

    Why choose 961 (PS-961)

    • T-6A footprint for quick, drop-in replacement

    • Machined carbon vs. molded carbon for improved surface finish and stability

    • Dependable Buna-N for standard pool/spa chemistry

    Upgrades / Variations (same footprint)

    • 1000 — Basic

    • 3865 — Premium + Viton

    • 1000cv— Molded carbon

    • 1000cvss — 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 for OEM numbers and Nameplate Data
    Weight .25 lbs
    Dimensions 1.5 × 1.5 × 1.25 in