Seal Refurbishment Services

Elastomer Chemical Compatibility

Seal Face Chemical Compatibility

MULTI-SPRING SEALS

H58U / H59U

  • Multi-spring arrangement
  • DIN 24960 L1K
  • Unbalanced

H58U is a narrow profile, multi-spring & DIN compliant seal commonly used in chemical pumps.

 

Originally designed to use a PTFE wedge as the secondary seal, a more cost-effective option using o-rings is now more commonplace (H58U).

 

The original PTFE wedge design is still available if required (H59U).

  • Operating conditions

Temperature:

Pressure:

Speed:

-30°C to 260°C

up to 17 bar, 245 psi

up to 25m/s, 5000 fpm

H59U - PTFE WEDGE

PARTS

A

B

C

D

E

F

G

H

I

J

Seat O-ring

Seat (BP Standard)

Snap Ring

Rotary Face

Metal Housing

O-ring (H58U)

Disc

Multi-Spring

Set Screw

PTFE Wedge

  • Material options

EQUIVALENT

Rotary Face:

Stationary Face:

Elastomer:

Metal Parts

CAB, A1. CAB, SiC

SiC

N, V or EP

Stainless Steel

58U / 59U

M03SU / M03U

1659S / 1659

BT-C5

BT-C56.KU

STANDARD SEAT

BP

BO

anti-rotation slot

unslotted

DATA SHEET

H58U - Data Sheet

TYPE 58U - UNBALANCED

PRODUCT INFORMATION

DIMENSIONS

note: dimensions refer to installed length, not 'free' length