Type HS20 is Single-coil conical spring unbalanced seal.
The HS20 series seal are extremely rugged & reliable & therefore used in wide range of sealing applications.

These seals have very few parts & hence can be easily assembled or dismantled. The seal arrangement does not warrant any modification even in case of conversion from gland packing.

The compact design eliminates the requirement of extra radial & axial space for its installation.