Lays down the dimensions and tolerances; the range of sizes is from 6 mm to 360 mm rod diameters. Includes the following three housing designs: - type A: recess housings with undercut or separate cover to retain elastomeric wipers (preferred); - type B: open recess housings for wipers having integral rigid reinforcement; - type C: recess housings with undercut to retain elastomeric wipers (for reduced dimension series). Does not specify the style, configurations, materials, or performance rating for the wiper ring.