G-Type / 2100
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4357
4357
View ProductSingle 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.
It is supplied with a #129 L-shaped o-ring (75 duro) for proper sleeve fit. Unlike some OEM designs which feature an offset, center-mount seat o-ring, our PS-style seal uses a bottom-mount o-ring layout for easy installation and direct compatibility.
Key specs: • Shaft size: 2″ 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 (4x6x10.5B RHR, 10 HP)
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VSX-VSH 10.5 (6x8x10.5 RHR, 75 HP)
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VSX-VSC 9.375 (5x6x10.5B)
Cross Reference:
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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.
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4490
4490
View ProductSingle Spring Mechanical Seal 4490 | PS-4490 Equivalent
Direct-fit G-Type replacement equal to industry standard 4490 and PS-4490. Built to the John Crane 2100 style for reliable, leak-tight performance.
Key specs: • Shaft size: 2-1/2″ 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
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VSX 8×6 series; OEM reference: P5001086 , P5001891
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Sleeve uses #140 O-ring
Cross-references
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4490 / PS-4490
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Industry standard G-Type / John Crane 2100
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.
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4801
4801
View ProductSingle Spring Mechanical Seal 4801 | PS-4801 Equivalent
Direct-fit G-Type replacement equal to industry standard 4801 and PS-4801. Built to the 2-1/2″ John Crane 2100 style for reliable, leak-tight performance.
Key specs: • Shaft size: 2-1/2″ single spring seal • Seat: 3.375″ × 0.562″ • Rotary OD: 3.268″ • Working length: 1.299″
Standard material build
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SC / SC / VIT — Silicon Carbide vs. Silicon Carbide faces; Viton elastomers
(Many OEM builds use a carbon rotary—this version is upgraded to SiC/SiC for longer life.)
Seat style
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Notched O-ring seat — Hydromatic upper configuration
Cross-references
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4801 / PS-4801
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Industry standard G-Type / John Crane 2100
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.
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6261
6261
View ProductSingle Spring Mechanical Seal 6261 | PS-6261 Equivalent
Direct-fit G-Type replacement equal to industry standard 6261 / PS-6261. Designed to the John Crane 2100 style for reliable, leak-tight performance.
Key specs: • Shaft size: 1-1/4″ single spring seal • Seat: 1.875″ x .437″ • Rotary OD: 1.811″ • Working length: 1.062″
Material build
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BUNA / CAR / CER — Buna-N elastomers; Carbon vs. Ceramic faces
Compatible components
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Sta-Rite DHH-169 and 13910 Berkely sleeves
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.
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