John Crane has launched a
sealing solution that meets the
requirements for wet-running
and dry-running capabilities with
one common seal platform. The new
Type 3740 cartridge split seal (the
latest addition to the company’s split
seal portfolio) is available in two
variations – the Type 3740 for wetrunning
and the Type 3740D for
dry-running services.
Easy to install, Type 3740 wetrunning
seals offer reliable
performance in demanding pump
and rotating equipment fluid
services. The Type 3740D dryrunning
split seal is designed for the
large shaft run-out and harsh
operating conditions commonly
associated with top-entry vessel
mixing services and similar dryrunning
applications.

Typical wet-running equipment
applications include pumps and
side-entry agitators, while the dryrunning
version is for top-entry
mixers and other dry environment
sealing services that frequently have
large levels of shaft run-out.