Flowserve ISC - Manual (Page 2)

1. Drawing, Brief Description, Explosion Protection,
Functional Requirements
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This mechanical seal is designed to provide reliable performance
under a wide range of operating conditions. The information and
specifications presented in this product brochure are believed to
be accurate, but are supplied for information purposes only and
should not be considered certified or as a guarantee of satisfac-
tory results by reliance thereon. Nothing contained herein is to be
construed as a warranty or guarantee, express or implied, with
respect to the product.
Although Flowserve Corporation can provide general application
guidelines, it cannot provide specific information for all possible
applications.
The purchaser/user must therefore assume the ultimate responsi-
bility for the proper selection, installation, operation and mainte-
nance of Flowserve products. Because Flowserve Corporation is
continually improving and upgrading its product design, the speci-
fications, dimensions and information contained herein are subject
to change without notice.
. Assembly Drawing
The assembly drawing is included in the shipping box with the
mechanical seal.
.2 Brief Description
A mechanical seal is a device designed to seal a rotating shaft
against a stationary housing, e.g. a pump shaft against a pump
casing. The stationary components will consist of a seal ring
This ISC seal is a cartridge mounted mechanical seal, designed for ease
of installation and reliable operation. No seal setting dimensions are
required. Removable centering tabs provide proper alignment.
The ISC seal family consists of:
ISCPX - Single Pusher Seal stationary springs
ISC2PP - Dual Pusher Seal stationary springs
ISCBX - Single Metal Bellows Seal rotating bellows (standard)
ISC2BB - Dual Metal Bellows Seal rotating bellows (standard)
ISCSX - Single Metal Bellows Seal stationary bellows (optional)
ISC2SS - Dual Metal Bellows Seal stationary bellows (optional)
The flexible stator pusher design compensates for inadvertent misalign-
ment of the seal chamber face. Multiple springs provide uniform face
loading and are external of the process fluid, resisting clogging and
stress corrosion.
The bellows design is available in both rotating and stationary bellows
arrangements.
Rotating bellows arrangements are used when the self cleaning feature
is required and stationary bellows are used to compensate for misalign-
ment of the seal chamber face.
Installation according to the following steps will assure long trouble
free life of the seal.
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