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G-Type / 2100

  • ps-4357 , ps-3170 mechanical seal replacement 2100 type G John Crane 2100 PS-3170 mechanical seal replacement

    4357 Mechanical Seal (PS-4357)— 2″

    4357 Mechanical Seal (PS-4357)— 2″

    Single Spring Mechanical Seal 4357 | PS-4357 Equivalent

    Direct-fit G-Type replacement equal to industry standard 4357 / PS-4357. Designed to the John Crane 2100 style for reliable, leak-tight performance. Configured with an EPDM/Carbon/Silicon Carbide face combination, ideal for demanding pump applications.

    This seal is supplied with a #129 L-shaped O-ring (75 duro) for proper sleeve fit. Unlike some OEM designs that use an offset/center-mount seat O-ring, this PS-style seal uses a bottom-mount seat O-ring layout for easier installation and direct compatibility.

    Key specs: • Shaft size: 2.000″ single spring seal • Seat: 2.75″ x 0.500″ • Rotary OD: 2.598″ • Working length: 1.500″

    Material build: Carbon/Silicon Carbide/EPDM (Carbon, Silicon Carbide faces, EPDM elastomers) 

    Fitment &Applications:
    Compatible with a variety of pump models including:

    • VSX-VSC 8.125 (4 x 6 x 10.5B RHR, 10 HP)

    • VSX-VSH 10.5 (6 x 8 x 10.5 RHR, 75 HP)

    • VSX-VSC 9.375 (5 x 6 x 10.5B)

    Cross Reference:

    • OEM Part Number: P5001889

    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-4490 PS-3804 mechanical seal replacement, buy now

    4490 Mechanical Seal (PS-4490)— 2-1/2″

    4490 Mechanical Seal (PS-4490)— 2-1/2″

    Single Spring Mechanical Seal 4490 | PS-4490 Equivalent

    Direct-fit G-Type mechanical seal replacement equal to industry standard 4490 and PS-4490. Built to the John Crane 2100 style for reliable, leak-tight performance in commercial HVAC/hydronic pump service.

    Key specs: • Shaft size: 2-1/2″ (2.500″) single spring seal • Seat: 3.375″ × 0.562″ • Rotary OD: 3.268″ • Working length: 1.811″

    Standard material build: SIC / SIC / VIT — Silicon Carbide vs. Silicon Carbide faces; Viton/FKM elastomers (Many OEM builds use a carbon rotary—this version is upgraded to SiC/SiC for longer life.)

    Fitment / notes

    • VSX 8×6 series; OEM reference: P5001086 , P5001891

    • Sleeve uses #140 O-ring

    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
  • Buy PS-4801

    4801 Mechanical Seal (PS-4801)— 2-1/2″

    4801 Mechanical Seal (PS-4801)— 2-1/2″