Shaft Seal, PS-3890, 5/8″ Shaft, Buna | PS-3890

$18.83

Manufacturer part number	PS-3890
UPC (GTIN)	852661157230
Returns	30-day returns – see our returns policy

109 in stock

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SKU: PS-3890 Categories: Hot Tub Pump Seals, Pool Pump Seals

Description
Additional information

5/8″ Buna Shaft Seal | Model PS-3890

Product Overview

We supply this professional-grade shaft seal featuring durable Buna construction for 5/8″ applications. This seal combines reliable performance with versatile compatibility across a wide range of pump applications.

Key Features and Benefits

Precision 5/8″ shaft design
Quality Buna elastomer construction
Enhanced sealing geometry
Optimized spring tension
Professional-grade materials
Balanced performance
Wide application range

Technical Specifications

Specification	Detail
Model	PS-3890
Shaft Size	5/8 inch
Elastomer Type	Buna
Face Materials	Carbon/Ceramic
Spring Material	Stainless Steel
Maximum Temperature	225°F (107°C)
Maximum Pressure	150 PSI
Rotation	Bi-directional
Design Type	Standard Duty
Application	Professional

Exploded parts diagram: This part is shown as item #13 on the Hayward Northstar SP4000/X Pump, w/Quad Lock Ports, pre-2007 exploded parts diagram.

🔧 Hayward Northstar SP4000/X Pump, w/Quad Lock Ports, pre-2007 – exploded parts diagram

Hayward Northstar SP4000/X Pump, w/Quad Lock Ports, pre-2007 exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.

No.	Part
22	Screw, Hayward Max-Flo/Super Pump/Northstar,Pump Stand,qty 2
21	Pump Stand, Hayward Northstar SP4000/SP4000X
19	Drain Plug, Hayward Northstar/Booster/Tristar, with O-Ring
18d	34-150-W029K18D
18c	34-150-W029K18C
18b	34-150-W029K18B
18a	34-150-W029K18A
17	Lock Ring, Hayward Northstar, Motor Mount
16	Motor Mount, Hayward Northstar SP4000/SP4000X/SP4000 HP
15	Bolt, Hayward Max-Flo/Super Pump, Motor Mount, Quantity 4
14	Seal Plate, Hayward Northstar SP4000/SP4000X
13	Shaft Seal, PS-3890, 5/8" Shaft, Buna ◀ this part
12	34-150-W029K12
12	34-150-W029K12A
11	Wear Ring, Hayward Northstar/Super II, .75hp-2.0hp
10	Diffuser, Hayward Northstar SP4000/X
9	O-Ring, 2-3/4" ID, 3/16" Cross Section, Generic
8	34-150-W029K8
6	34-150-W029K6
5	34-150-W029K5
4	Basket, Pump, OEM Hayward Northstar SP4000 SP4000X
3	34-150-W029K3
2	34-150-W029K2
1	Union Kit, Hayward SP4000, TriStar, 2"s x fhbt, Black, qty 2

🔧 Exploded diagram and parts

This part belongs to the Hayward Northstar SP4000/X Pump, w/Quad Lock Ports, pre-2007 assembly. Everything listed below is something we stock for it, and the numbers match the diagram.

Complete motors

No.		Part	Our part number	Availability
18		Motor, Century, 208v-230v, Var-Spd, 48fr, C-Face Thd, V-Grn	ECM16CU	Available to order

Complete motors

No.	Part	Our part number	Availability
18	Motor, Century, 0.75hp, 115v/230v, 1-Spd, 56Jfr, C-Face Thd, EE	B638	Available to order
18	Motor, Century, 1.0hp, 115v/230v, 1-Spd, 56Jfr, C-Face Thd, EE	B654	3 in stock
18	Motor, Century, 1.5hp, 115v/208-230v, 1Spd, 56Jfr, C-Face Thd, EE	B796	6 in stock
18	Motor, Century, 2.0hp, 208v-230v, 1-Spd, 56Jfr, C-Face Thd, EE	B809	1 in stock
18	Motor, Century, 3.0hp, 208v-230v, 1-Spd, 56Jfr, C-Face Thd, EE	B818	Available to order
18	Motor, Century, 3.0hp, 208v-230v, 1-Spd, 56Jfr, C-Face Thd, EE	ST1302V1	Available to order

Complete motors

No.	Part	Our part number	Availability
18	Motor, Century, 0.75hp, 115v, 2-Spd, 56Jfr, C-Face Thd	B2973	2 in stock
18	Motor, Century, 1.0hp, 230v, 2-Spd, 56Jfr, C-Face Thd	B2975	2 in stock
18	Motor, Century, 2.0hp, 230v, 2-Spd, 56Jfr, C-Face Thd	B2979	3 in stock
18	Motor, Century, 3.0hp, 230v, 2-Spd, 56Jfr, C-Face Thd	B966	2 in stock

Complete motors

No.	Part	Our part number	Availability
18	Motor, Century, 2.0hp, 208v-230v, 1-Spd, 56Jfr, C-Face Thd	ST1202	Available to order
18	Motor, Century, 1.0hp, 115v/230v, 1-Spd, 56Jfr, C-Face Thd	ST1102	18 in stock
18	Motor, Century,0.75hp,115v/230v,1-Spd,56Jfr,C-Face Thd	ST1072	3 in stock
18	Motor, Century, 0.75hp, 115v/230v, 1-Spd, 56Jfr, C-Face Thd	B127	8 in stock

Parts that go with this

Part	Our part number	Availability
Tool, Pool Tool, O-Ring Pick	134	18 in stock
Shaft Seal, PS-1907, 5/8" Shaft, Silicon Carbide PS-3890	PS-1907	12 in stock
Shaft Seal, PS-4280, 5/8" Shaft, Viton, Generic	PS-4280	15 in stock

Installation and Maintenance

Professional installation ensures optimal seal performance. The ceramic seat must be installed with uniform pressure, and sealing faces must be thoroughly cleaned before assembly. Proper alignment is crucial for maximum seal life.

Compatibility

Engineered for use with:

5/8″ shaft pumps
Multiple pump brands
Standard installations
Professional applications
Common configurations

Performance Features

Designed to deliver:

Consistent sealing pressure
Reliable performance
Good chemical resistance
Smooth operation
Extended service life
Professional reliability

Note: Always verify seal compatibility with your specific pump model before installation

Pump Model	EcoStar, EcoStar C, EcoStar SVRS, ePump JEP VS, FloPro, MaxFlo II, MaxHP, NorthStar, PB4-60Q, PB4-SQ, SHPF/SHPM, TriStar, TriStar VS, VS FloPro, VS PlusHP, Water Feature, WaterFall
Shaft Seal Head Type	D
Pump Manufacturer	Jandy/Zodiac, Polaris/Zodiac
Quality/Material	Carbon Face, Good – Buna
Shaft Size	5/8"
Seal Outside Diameter	1-1/32"dia
Seal Height	27/32"
Mating Ring Diameter	1-3/8"dia
Mating Ring Thickness	13/32", 13/38"
US Seal Basic Equivalent	PS-3890
H Part#	35-423-1088