Seal Refurbishment Services

Elastomer Chemical Compatibility

Seal Face Chemical Compatibility

MULTI-SPRING SEALS

H891

  • Internally balanced
  • Multi-spring arrangement
  • Non-fretting, non-clogging

H891 is an internally balanced rotary pusher seal. It is designed to replace and / or upgrade existing seals from unbalanced to balanced without amendments to the shaft. The springs are internally located which avoids clogging with the pumped media. The rotary face is highly accurate CAM manufactured, allowing it to withstand large changes in operating temperatures and pressures while keeping faces flat.

  • Operating conditions

PARTS

A

B

C

D

E

Rotary Face

O-ring

Metal Holder

Multi-spring

Set Screw

EQUIVALENT

891

DATA SHEET

H891 - Data Sheet

Temperature:

Pressure:

Speed:

-30°C to 260°C

up to 42 bar, 600 psi

up to 20m/s, 4000 fpm

  • Material options

Rotary Face:

Elastomer:

Metal Parts

CAB, SiC, TC

N, V or EP

Stainless Steel

TYPE 891

PRODUCT INFORMATION

DIMENSIONS

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