Seal Options - Teledyne D series Installation And Operation Manual

2.5 Seal Options

Figure 2-18 Inside the pump cylinder: wetted materials
Section 2 Fluid System Connections and Accessories
The pump contains four seals and a wear ring.
Transducer seal – The transducer seal is gold-plated to press
into minute gaps between the surfaces of the transducer flange
and the shelf of the cylinder cap.
Note
The 30D and 65D do not have transducer seals.
Cylinder cap seal – The cylinder cap seal maintains the
pressure within the cylinder.
Piston seal – The piston seal maintains the pressure within the
cylinder.
Wear ring – The wear ring supports the seal against movement
within the cylinder and keeps the piston centered in the cylinder
bore.
Wiper seal – The wiper seal cleans the inside of the cylinder. In
the model 1000D pump, the wiper seal faces the same direction
as the piston seal to prevent leakage of the wash gland fluid.
Piston seal
The standard seals for each pump model satisfy the require-
ments of most applications, including those that use carbon
dioxide, such as SFE. However, certain solvents and/or conditions
require special cylinder seals to facilitate the application.
Table 2-7 on the following page is provided to help you select the
correct seal for your pump and application requirements.
D Series Syringe Pumps
retainer
Pressure
transducer
Transducer
seal
Cylinder cap
seal
Piston seal
Wear ring
Wiper seal
2-19