Fine Ribbed Caps Fine ribbed urea closures available in white. For use WITH or WITHOUT neck plug. Catalogue No. Pump Type Size Type Capacity W Width W1 x W2 width D Depth D Diameter H Height L Length Seal Type Neck Size Internal Length Internal Height PL Pan Length K Orifice Diameter D Shank Diameter M Depth Dose μl Material Notes Internal Diameter BL Length BL Length Internal Width Soap Tablet Size Available Samples 5518                21  18      18mm R4                UREA              5520                23  21      20mm R4                UREA              5522                25  24      22mm R4                UREA              5524                27  27      24mm R4                UREA              Enlarge Table Dimensions in mm