HEB Block cylinders BLZ Ni 400 Block by block extremely small construction lengths, preferably appropriate to short strokes. Strokes according to the wishes of the. Stroke tolerance according to German Standard DIN/ISO 2768m. Stroke limitation through the front and back stop face, for piston speeds exceeding 0,1 m/sec we recommend a mechanical stroke limitation or a cushioning. The installed seals are suitable to hydraulic fluids H, HL, HLP according to German Standard DIN 51524/ 51525 and to temperatures from -20?C to +90? C. With higher temperatures and other pressure mediums appropriate sealing material can be used. (Arrangement necessary.)