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Mechanical Seal 100c (PS-100) — 5/8″

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

Mechanical Seal 100c (PS-100) — 5/8″

Weight 1 lbs
Dimensions 8 × 6 × 4 in
QTY Price

$2.04
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  • DESCRIPTION

    Mechanical Seal 100c — Type 166 (5/8″)| PS-100 Equivalent

    Equivalent to industry standard 100 / PS-100.
    Direct-fit Type 166 mechanical seal for Sta-Rite/Pentair J Series pumps. Built with molded carbon / ceramic faces and Buna-N elastomers for reliable, everyday pool/spa service.

    At-a-glance: 5/8″ shaft • 1.187″ × 0.343″ cup seat • Molded carbon/ceramic, Buna-N (Type 6W)

    Fitment: J Series Shaft Seal — 5/8″ (Buna-N Type 6W replacement for Sta-Rite/Pentair J Series)

    Cross-references (identical to)
    U10993SS, 173510102, AS100, Anthony 04547, East Side P28322, Purex P28280, 071733, Sta-Rite U109-6A, U109093, U10993SS, 173510102, Sears 42G2377W, Swimquip P61

    Technical Specifications:

    Product Category: Parts 

    Poolweb Item #: U109-6B

    Cross Reference #: APCAS100, U109-6A

    Upgrades / Variations (same footprint)

      •  957 — Premium carbon face

      • 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 more OEM numbers and Pump Nameplate Data
  • SPECIFICATIONS

    OEM numbers: 4547 , 712-7042-750 , 1S-5010 , P-28322 , 42G2377W , 0625-6BC , U9-469 , P28280 , C76-78A, C76-98A , 142-54049, 51294 ,C176-037 , U109-6, U109-6A , U109-93SS, 17351-0102S , 17-30009-005 , 330.009.005 , 1760371

    Brands: ACE PUMP CORPORATION, AERMOTOR PUMPS (A PENTAIR Brand) , ANTHONY & SYLVAN CORPORATION , AURORA PUMPS (A PENTAIR Brand) , CARTER PUMPS, INC. , CHICAGO PUMP (Division of GRUNDFOS, INC.) , DETROIT HARVESTER COMPANY , EAST SIDE MFG. , ECONOMY PUMP , HOMART-SEARS , MEMPHIS PUMP & MFG. COMPANY, INC. ,NASH (Division of GARDNER DENVER) , PEERLESS PUMP COMPANY , PENTAIR WATER FILTRATION , PUREX HYDROTECH , RED JACKET , SKIDMORE PUMP , STA-RITE INDUSTRIES , TEEL PUMP , WEIL PUMP COMPANY, INC. (Part of WILO USA) , XYLEM INC. , PENTAIR POOL PRODUCTS

    Nameplate Data: ACH-25, 33, 50, 75, 100; ACL-75 , ACO & BCH-25, 33, 50, 75 ; L Series™ SW-DW Jet Pump ;  AJ Series, Dura-Glas® Pre 1998, U9-469 ; Dyna-Glas® and Dyna-Max® ; Max-E-Glass™ pre 1998 ; PLBC Series Pre 1995 ; PLBC Series 2P141, 2P894-2P899, 3P683-684-685, 3P-686-687-690-692-715-716, 1R311, 5P403, 5P404, ; IR303, 5P407

    Cross references & alternative part numbers

    This seal is commonly searched and referenced as:

    • PS-100 mechanical seal

    • 100 mechanical seal

    • 100c mechanical seal

    • Type 166 mechanical seal

    • J Series pump shaft seal 5/8

    • Sta-Rite / Pentair J Series mechanical seal

    • U109-6A / U109093 / U10993SS

    • Poolweb Item: U109-6B

    • Cross Reference: APCAS100

    Cross-references (different format):
    U10993SS, 173510102, AS100, Anthony 04547, East Side P28322, Purex P28280, 071733, Sta-Rite U109-6A, U109093, Sears 42G2377W, Swimquip P61

  • PHYSICAL PROPERTIES

    Seal House Type 166
    Our Type 166 configuration combines the best design elements we’ve refined over the years to deliver superior reliability and performance.

    Key advantages include:

    • Crimped rotary face with positive drive — securely held in place to prevent dislodgement during installation.

    • Full metal retainer with positive drive — ensures strength and long-term durability.

    • Full rubber bellows construction — provides complete sealing along both the shaft and face, rather than relying on a small O-ring or partial gasket.

    • Molded carbon face (never plastic) — delivers extended service life.

    Compatibility & upgrade:

    The Type 166 is designed to replace most small seal types commonly used in pool and spa applications, including Type 16, G, A, 6, AV, 2100, and more. Even in its basic form, this seal is a significant upgrade over standard “pool” seals typically available on the market.

Disclaimer: Seal House USA provides aftermarket replacement parts. Any OEM names are used strictly for cross-reference. We are an independent supplier.

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