ROD SEAL DT4

STANDARD SEAL DIMENSIONS

DESCRIPTION

The DT4 rod seal is composed of two rings. The dynamic seal is a ring in filled PTFE while the static seal is an O-Ring also acting as energizer.

TECHNICAL DATA

Pressure: < 600 bar
Speed: < 15 m/s
Temperature: from – 30° C up to + 100° C for the standard type with nitrile OR. Short peaks till 120° C. For a different temperature range, the O-Ring should be replaced by a more suitable model.

MATERIAL

Bronze-filled PTFE for the standard type, and is NBR (Nitrile butadiene rubber) O-Ring

ASSEMBLING

PTFE seals require careful assembling operations in comparison to other types of seals It is necessary to remove flashes and/or cutting edges in the grooves.
The rod seal is usually assembled in the following sequence:
• fit the O-Ring into the groove
• twist the PTFE ring using a mandrel and a
expansion bush;
• calibrate with a plastic conical tool