SULZER® MECHANICAL SEALS

HS1F

  • Refurbishment Only
  • Safeseal JCS1F Replacement
  • Flushed Single Seal, Balanced
  • Semi-Cartridge Design
  • Suits Sulzer AHLSTAR Pumps
  • For Integrated Chambers

PARTS

1

2

3

4

Integrated Chamber

Flush Ports

Bolt Fastener

Impeller

HJCS1 is a single 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 JCS1F. Seal operates on API plan 11, providing continuous pressurised water flush to the seal faces through a restricted throttle design.

 

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.

A

B

C

D

E

F

G

H

I

J

K

L

M

Spacer Sleeve O-ring

Spacer Sleeve O-ring

Rotary O-ring

Spacer Sleeve

Rotary Holder

Rotary Face / Ring

Stationary Face / Ring

Stationary Holder

Stationary O-ring

Seal Holder O-ring

Seal Holder O-ring

Set Screw with Pin

Wave Spring

EQUIVALENT

  • Operating conditions¹

Safeseal JCS1F

LP-S-UPF

Temperature:

Pressure:

Speed:

-30°C to +120°C

< 16 bar, 232 psi, 1.6 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.

DATA SHEET

HS1F - Data Sheet
  • Materials

Rotary Face:

Stationary Face:

Elastomer:

Metal Parts:

(SiC)

(SiC) or (CAB)

Viton®

316S.S.

(_) refers to shrink fitted

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 FLUSHED SEAL

PRODUCT INFORMATION

INSTALLATION & OPERATION

Operation:

HS1F is a flushed 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. From the impeller-side, slide the stationary assembly (parts G - M) into the end of the seal chamber.

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

3, Install the rotary and spacer sleeve assembly (parts A - F) and tighten with the impeller (4).

4. Install the seal water connections (2).