UN 12x16x3 NBR - Hydraulic Cylinder Seal up to 32 MPa

Applications

Advantages

Technical data

Main description

UN 12x16x3 NBR is a U-ring hydraulic seal designed for dynamic sealing applications in systems with reciprocating motion. It is commonly used as a hydraulic cylinder seal installed on pistons or in rod glands, where reliable sealing performance is required under variable pressure and continuous movement.

The UN profile, based on a U-shaped cross-section, allows pressure-assisted sealing. As system pressure increases, the sealing lips expand against the mating surfaces, ensuring effective sealing and reduced leakage. This design provides stable operation in hydraulic and pneumatic applications with working pressures of up to 32 MPa, while maintaining low friction and controlled wear.

The seal is manufactured from nitrile rubber (NBR), a material widely used in industrial sealing components due to its high resistance to mineral oils, hydraulic fluids, lubricants and standard industrial media. NBR offers good elasticity, mechanical strength and dimensional stability, which translates into long service life even in demanding industrial applications.

The compact size 12x16x3 allows installation in space-constrained cylinder designs, valves, actuators and machinery assemblies where precise sealing and reliability are critical. The UN seal supports smooth reciprocating motion, protects system components from contamination and helps maintain consistent operating performance.

This sealing solution is intended for professional use in industrial maintenance, hydraulic system manufacturing and OEM applications, where predictable performance and durability are essential.

FAQ - Frequently asked questions

What type of seal is UN 12x16x3 NBR?
It is a U-ring seal designed for dynamic sealing in hydraulic and pneumatic systems.

Can this seal be used on both piston and rod?
Yes, it can be installed on pistons or in rod glands depending on system design.

What is the maximum working pressure?
The seal is suitable for pressures up to 32 MPa.

What material is used?
The seal is made of nitrile rubber (NBR), resistant to oils and hydraulic fluids.

Is it suitable for reciprocating motion?
Yes, it is specifically designed for reciprocating motion applications.