The Nussbaum 20.036/37ETL Hydraulic Seal Kit is a replacement cylinder seal kit designed for the ETL-style hydraulic cylinders used on Nussbaum HBT-8000 lifts.

This kit is specifically intended for the cylinder version identified by a steel hydraulic line that connects to a square hydraulic block welded directly to the cylinder body. This physical feature can be used to help distinguish the ETL cylinder from other HBT-8000 cylinder configurations that may require a different seal kit.