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851

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

851

QTY Price

$6.00
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  • DESCRIPTION

    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
  • SPECIFICATIONS

    OEM number: 11107939 , 30220F , S20794, S21961 , W105-1 , 0000059 , S1190 , 296-5040-00 , SP1600Z3 , 170480001 , 2120-0010 , 48244 , 240260 , 3201625000 , 170480001 , 170480001, 37400-0027S , 32223, 322231H , 5P414, 1R299 , 70X107-M , 17-62372-008

    Brands: ABS USA (SULZER) , ACE PUMP CORPORATION , BERKELEY PUMPS (A PENTAIR Brand) , CH&E MFG. COMPANY , CRANE PUMPS & SYSTEMS , HALE PRODUCTS, INC. , HAYWARD INDUSTRIES, INC. , HYDROMATIC. , PUMP COMPANY , HYPRO CORPORATION , MAGNUM PRODUCTS, LLC. , MONARCH PUMPS (Division of FRANKLIN ELECTRIC COMPANY, INC.) , MOYNO, INC. (A NOV Brand) , PENTAIR, INC. , STA-RITE INDUSTRIES , STONE CONSTRUCTION , TEEL PUMP , WEBER INDUSTRIES, INC. , WEIL PUMP COMPANY, INC. (Part of WILO USA)

    Nameplate Data:  ACH-150, 200, 300, 500 ACXH-150 , BCH-100, 200, 300 , 1P855-868-869-895,1P913, 1P950 2P007-008, 2P333, 3P525 3P526, 3P600

  • 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/machined carbon face (never plastic) with upgrade options — 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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