Tri State Hydraulics



U-Ring TM 21

Single-acting piston seal for hydraulic cylinders that are used in heavy machinery. The wear-resistant polyurethane material allows use with high operating requirements.

Examples of use: Injection moulding machines, presses, rolling mills, hydraulic steel structures, large cylinders 


Parameters of use

40 MPa
v 0.5 m/s
-30 ... +110 °C
FILTERS & SEALS Merkel Piston Seals U-Ring TM 21