The 233 Series is one of the most robust four-piece piston seals available on the market. It consists of a profiled energizer, a polyurethane seal element and two full-face, anti-extrusion backup rings. It is designed for double-acting cylinders in heavy-duty applications subject to severe pressure spikes coupled with high running clearance.
Long service life under the harshest conditions
Compatible with water-based fluids (H-PU)
Optimized for high running clearance
The 233 Series piston seal features a robust NBR elastomer, a profile seal cap in abrasion resistant polyurethane and two backup rings in high-strength thermoplastic.
|Polyurethane H-PU / NBR / POM||MP38|
|Polyurethane H-PU / NBR / Polyamide||MP40|
|water oil emulsions (HFA)||+5…+55||+40…+130|
|water-glycol fluids (HFC)||-20…+55||-5….+130|
|polyol esters (HFD)||-||-|
|Speed||0.5 m/s (1.6 ft/sec)|
|Pressure||1380 bar (20000 psi)|
Note:for other materials or fluids please contact our engineering department.