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Industrial Seal Specifications

1) The document discusses Carcoseal UN, a popular sealing system that requires a retaining plate to exert axial compression and ensure good sealing. 2) It provides specifications for standard section sizes related to shaft diameters between 100-600mm. 3) The sealing systems are mainly produced with rubberized fabric and elastomers, and it offers three standard materials - NBR, HNBR, and VITON - suitable for different temperature, speed, and pressure conditions.

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473 views2 pages

Industrial Seal Specifications

1) The document discusses Carcoseal UN, a popular sealing system that requires a retaining plate to exert axial compression and ensure good sealing. 2) It provides specifications for standard section sizes related to shaft diameters between 100-600mm. 3) The sealing systems are mainly produced with rubberized fabric and elastomers, and it offers three standard materials - NBR, HNBR, and VITON - suitable for different temperature, speed, and pressure conditions.

Uploaded by

mattia
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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CARCOSEAL UN

other and therefore a sealing problem is always


complex.
Carcoseal / UN. Is by far the most popular covering
the majority applications.
This seal require a retaining plate. When bolted in
position the plate exerts adequate axial compression Surface finish
on the shoulder of the Carcoseal, ensuring good
O.D. sealing. Surface roughness Min Max
HxA b E C H
d (mm)
(mm) (mm) (mm) (mm) (mm)
Ra 0,2 mm 0,8 mm
100 ÷ 250 16 x 20 2,0 9 4 16 ±0,1

250 ÷ 400 20 x 22 2,2 11 6 20 ±0,2


Rt 1 mm 4 mm

400 ÷ 600 22 x 25 2,5 11 7 22 ±0,2

> 600 25 x 32 3,2 14 8 25 ±0,2


Standard section related to shaft diameters.

Our sealing systems are mainly produced with


rubberized fabric & elastomers. Today we mainly
offer 3 standard materials.

MATERIAL Temperature Speed Pressure


(°C) (m/s) (MPa)

Code Type

S820 NBR -40 ÷ 120 15 0,05

HT720 HNBR -40 ÷ 170 25 0,05

Z420 VITON -30 ÷ 200 25 0,05

Our three standard materials are designed to cope


with these conditions .
All our products undergo our exclusive Carcoflon
treatment which gives considerable reduction of
the dry friction coefficient.

Many parameters like, as example, bad finish,


eccentricity, high temperature, bad lubrication, may
reduce maximum permissible speed sometimes
dramatically. All these parameters interact each
____________________________________________________________________________EDITION 01/07
To facilitate the installation the shaft should have Static eccentricity: the distance between the
centre of the internal edge of the lip and the shaft
rotation centre;
Dynamic eccentricity: the distance between the
geometric centre of the shaft section and the rotation
centre;

Ecc. Stat. Max


d (mm) HxA (mm)
(mm) Es

a chamfer with length “L” as function of its diameter 100 ÷ 250 16 x 20 0,50
“d” as indicated in graph below.
250 ÷ 400 20 x 22 0,55

400 ÷ 600 22 x 25 0,62

> 600 25 x 32 0,70


L [mm]

d [mm]

Each particular shaft size seal will have a


corresponding bore and width dimension. It’s
important that the bore be finished smooth and free Tab. shows static limits as function of shaft
from longitudinal scratches which could provide diameter “d” and of our standard cross section “H x
leakage path; also that a generous lead-in chamfer is A”, and dynamic limits as function of shaft speed.
incorporated on the leading edge of the housing to
facilitate fitting.
Please contact our technical dept for details.

CARCO S.r.l.
r 2= 0.5 with H≤ 10 Via U. Foscolo, 4
r2 = 0.75 with H> 10 20060 – Basiano (MI)

Tel +39.02.95760331
Fax +39.02.95760333
http://www.carco.it

CARCO GmbH
Verkaufsbüro Nord
Neehusenstrasse 22
21147 Hamburg

Tel: +49 40 79612464


Fax: +49 40 79612466

http://www.carco-germany.de

____________________________________________________________________________EDITION 01/07

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