Icotek Grommets Filler plug 630524 - icotek 42891, Icotek's ST 12 filler plug is made from polyamide and is white in colour. This grommet is typically used to seal openings in enclosures, providing a clean and professional finish. It is commonly utilised in cable management and electrical installations. Icotek 42891 ST 12 Filler Plug Polyamide White For Non-Cable Use