WAVE-SPRING SEALS

H7U

  • O-ring, Wave-Spring Pusher
  • To DIN EN 12756 Standards
  • Unbalanced
  • Bi-directional

H7U is a DIN EN 12756 compliant mechanical seal for metric shafts, based on the industry standard "M7N" design. It is unbalanced to suit straight shafts. It is o-ring mounted and relies on a one-piece, sinuous wave-spring that offers greater axial movement tolerance while reducing the risk of clogging.

 

The design allows the rotating seal face to be easily replaced or interchanged.

PARTS

A

B

C

D

E

F

G

H

Stationary O-ring

Stationary Face / Ring

Rotary Face / Ring

Rotary O-ring

Rotary Thrust Ring

Rotary Wave-Spring

Rotary Holder

Rotary Set Screws

SEAT OPTIONS

G9

G14

G4

G13

G6

standard - SiC

standard - CAB

Euro - SiC

Euro - CAB

DIN EN Short - SiC

  • Operating conditions¹

EQUIVALENT

Temperature:

Pressure:

Speed:

-30°C to +260°C

< 17 bar, 245 psi, 1.7 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.

M7N

167 / P167

W07DMU

Type 1677 / 1677M

RB670

  • Material options

DATA SHEET

Rotary Face:

Stationary Face:

Elastomer:

Metal Parts:

SiC

SiC, CAB or A1

N, V or EP

304S.S.

H7U - Data Sheet

M7N

PRODUCT INFORMATION

DIMENSIONS

Dimensions refer to installed length, not 'free' length:

*non-DIN EN 12756 size, only available with multi-springs (i.e. H74U)