UN Hydraulic Rod Seals PU Seal for Cylinders and Actuators

The UN rod seal series is a widely adopted sealing solution for hydraulic
cylinders operating under demanding industrial conditions. Designed for
reciprocating motion, UN seals ensure high sealing performance on piston rods,
preventing hydraulic fluid leakage and keeping dust and contaminants out.

This series includes three structural variations:

UN – The standard U-cup shape seal used for most rod applications.

UNS – A short variant designed for compact installation spaces.

UHS – A long and reinforced type for heavy-load hydraulic systems.

Made primarily of premium polyurethane (PU), these seals feature excellent wear
resistance, elasticity, and sealing memory. DEDE also offers optional materials
such as NBR or PTFE upon request for specialized needs.

Application Fields
The UN series is ideal for:

Hydraulic cylinders in construction, agricultural, and industrial machinery

Material handling equipment like forklifts and hydraulic lifts

Excavators, loaders, bulldozers, and other construction equipment

Automated production lines and robotic arms

Agricultural equipment such as tractors and plows

Energy sector machinery like wind turbines and hydraulic stations

DEDE’s Service Advantage
As a sealing technology manufacturer with over 30 years of experience, DEDE
provides:

Fast dispatch of standard parts – Over 10,000 sealing SKUs in stock, including
O-rings and rod seals, with rapid delivery for urgent orders

Full customization service – From material selection and structural design to
production and testing, we tailor sealing solutions to match specific
application requirements

Technical optimization support – Our engineering team helps customers reduce
sealing failure, extend service life, and improve machine efficiency

Company Highlights
Modern smart manufacturing base

Recognized leader in the sealing industry

Full model coverage with ready inventory

Exported to over 80 countries

Certified Provincial Innovation Center

Specialized and Innovative Enterprise

National High-Tech Enterprise

Core player in the regional functional sealing product cluster

Choose DEDE UN rod seals to enhance the reliability and performance of your
hydraulic systems.

Minimum Order: 500 pieces

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