Air-supply elements ff Rexroth strut profiles can be used as compressed-air 7,9 cm2 leads and reservoirs. The hollow chambers or central holes are used ff Flanged plate for end closing of profiles (p. 5-3) ff Compressed-air intake or discharge at the flanged plate, connection piece, or connection screw fitting (p. 5-4) ff Air-tight connecting of profiles with longitudinal end connectors or T-connectors (p. 5-6, 5-5) ff The use of the heavy-duty profiles is preferable in the case of more demanding leak-tightness requirements (e.g. for underwater applications) 8,8 cm2