Type 1645B/1645BS

Narrow profile, multiple spring Mechanical Seal, designed for the common American ANSI B73-1974 centrifugal pump standard.

Frequently fitted with Type 23 PTFE boot-mounted stationary seal.

Types 1645B and 1645BS are balanced designs for stepped-shafts.

The stock size is always set by the shaft size under the seal body.

A PTFE backup ring is recommended to be specified for higher pressure O-Ring applications.

Features
Narrow profile, Multiple Spring Mechanical Seal
To suit common American ANSI B73-1974
Fitted with Type 23 P.T.F.E boot-mounted Stationary
Operating Limits
Temperature: -30C to +140C
Pressure: Up to 40 bar (580 psi)