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

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