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561.414.1046

305C Mechanical Seal (PS-305) – 1-1/2″

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

305C Mechanical Seal (PS-305) – 1-1/2″

SKU: N/A

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

    Single Spring Mechanical Seal 305c | PS-305 Equivalent

    305c single spring mechanical seal, PS-305 / 305 equivalent. Fits 1-1/2″ shaft with 2.125″× 0.437″ seat and Type N-22 rotary head.

    Shaft size: 1-1/2″, Seat: 2.125″ x 0.437″cup, Rotary OD: 2.067″, 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 elastomers

    • SIC/SIC/VIT — Silicon Carbide/Silicon Carbide, Viton 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
  • SPECIFICATIONS
    Cross Reference / Alternative Part Numbers

    OEM numbers: S05650, S20774 , ND2502A1 , 707831150 , CPM-10367A, CPM-10368A , PK-0678 , SL-8223 , 2663008, 2675108 , 862-029 , Q26-264-Y2

    Brands: AURORA PUMPS (A PENTAIR Brand) , BERKELEY PUMPS (A PENTAIR Brand) , FAIRBANKS NIJHUIS , GOULDS PUMPS , INGERSOLL-DRESSER PUMPS AND COMPRESSORS , NASH (Division of GARDNER DENVER) , PACO , PEERLESS PUMP COMPANY , TACO , WEINMAN® (Division of CRANE PUMPS & SYSTEMS)

    Nameplate Data: 6YPH, 4EPBL, B1-1/2TQLS, B2TQMS, 2-1/2TQMS, B3TQMS , [Fig. 3169, 3650, 3655,3750 For Group M and K, 2-1/2” Fig. 3430] , GTB , MP-40 , [When Seal is Mounted on Sleeve: 2L-4, 2L-5, 3L-6, 4L-2, 4L-3, 5L-3 When Seal is Mounted on Shaft: 2-1/2JC, 3L-5, 4L-1, 5L-2, 6L-2, 6L03]

    Part number variations
    PS-305 / PS305 / PS 305
    305 seal / 305 mechanical seal / 305 pump seal
    305c / 305 C / 305-c

    Size / measurement variations
    1-1/2″ mechanical seal / 1.5″ seal / 1 1/2 seal
    2.125 × .437 seat / 2-1/8 × 7/16 seat / 2.125 x .437 seat
    2.067 rotary OD / 2.067″ OD
    1.687 working length / 1.687″ length

    Style variations
    N-22 / N22 / T-N22 seal head
    Pac-Seal T-21 (long working length) / T21 long working length
    Burgmann MG9 / MG-9
    Type E / Type 1 / T-E/1 / C/21

  • PHYSICAL PROPERTIES

    T-N11/N22 Seal Heads

    Our T-N11/N22 type seal heads are designed with a reduced outer diameter, making them fully compatible with ANSI seal chamber dimensions. The rotary portion of our seal is typically smaller than the stationary seat, and can fit straight box bores where many other seals cannot.

    These seals are direct replacements for industry-standard T-E / 1 heads as well as C / 21 models.

    Note: The N11/N22 seal designs max shaft size is 2.25″. For larger shafts, please refer to our other seal types.

    Have questions? Call us anytime—we’re here to help.

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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