SULZER® MECHANICAL SEALS

HS2P

  • Safeseal JCS2 Replacement
  • Flushed Double Seal, Balanced
  • Semi-Cartridge Design
  • Suits Sulzer AHLSTAR Pumps
  • For Integrated Chambers

PARTS

1

2

3

4

Integrated Chamber

Flush Ports

Bolt Fastener

Impeller

HS2P is a double mechanical seal in a semi-cartridge, stationary-based, wave-spring design. It is a direct replacement for pumps fitted with John Crane Safematic® Safeseal Type JCS2P. Seal operates with continuous pressurised water flush to the seal faces.

 

It is suitable for Sulzer AHLSTAR pumps fitted with integrated seal chambers (MS11, MS12 & MS21). It allows seal replacement via the impeller-end and bolt fastening through the backplate.

  • Operating conditions¹

Temperature:

Pressure:

Speed:

-30°C to +120°C

< 25 bar, 360 psi, 2.5 MPa

< 20m/s, 4000 fpm

rpm < 1200000/(3.14 x D1)

¹Guide-values only (due to diversity of possible applications). Enquire for specific-use cases. Maximum values of each parameter cannot be applied together.

  • Materials

Inb. Seal Faces:

Outb. Seal Faces:

Elastomer:

Metal Parts:

(SiC)/(SiC)

(SiC)/(SiC)

Viton®

316S.S.

A

B

C

D

E

F

G

H

I

J

K

L

M

N

OP

Q

R

S

T

U

V

W

X

Y

Z

Spacer Sleeve O-ring

Spacer Sleeve O-ring

Inb. Rotary O-ring

Spacer Sleeve Pin

Spacer Sleeve

Inb. Rotary Holder

Inb. Rotary Face

Inb. Stationary Face

Inb. Stationary Holder

Inb. Stationary O-ring

Seal Holder O-ring

Seal Holder

Seal Holder Flush Hole

Thrust Ring

Thrust Ring O-ring

Seal Holder O-ring

Seal Holder Pin

Outb. Stationary O-ring

Wave Spring

Outb. Rotary Holder

Outb. Stationary Face

Outb. Rotary Face

Outb. Rotary O-ring

Outb. Rotary Holder

Drive Pin

Drive Collar + Set Screw

EQUIVALENT

(_) refers to shrink fitted

Sulzer TB2P

Safeseal S2P

LP-D

DATA SHEET

HS2P - Data Sheet

OEM names, brands, model or part numbers are used solely for reference. Our components are engineered to deliver performance and service life equivalent to or exceeding that of OEM parts when correctly installed and appropriately applied. Sulzer® AHLSTAR is a registered trademark of its respective company. Pump Seal Supplies Pty Ltd are not representative of, nor affiliated with Sulzer® AHLSTAR.

AHLSTAR - INTEGRATED DOUBLE SEAL

PRODUCT INFORMATION

INSTALLATION & OPERATION

Operation:

HS2P is a double-acting mechanical seal. It requires seal water for operation. The sliding faces get their lubrication from seal water.

 

Note! Do not run the seal without seal water. Regulate the seal water flow to 0.5 - 3 L/min. Outcoming seal water temperature should not exceed 60°C. If the seal requires more cooling, increase the flow. Regulate the seal water pressure 2 bars (30 psi) higher than the product pressure to be sealed.

 

Installation:

1. Slide the drive collar (Z) and outboard rotary (parts V - X) onto the shaft up against the shaft shoulder, ensuring the pin (Y) is engaged.

2. From the impeller-side, slide the stationary assembly (parts H - U) into the end of the seal chamber, ensuring the pins (Q) engages with the slots in the outboard stationary holder (T).

3. Rotate the stationary assembly until the bolt (3) is able to be fastened.

4. Install the inboard rotary and spacer sleeve assembly (parts A - G) and tighten with the impeller (4).

4. Install the seal water connections (2).