We manufacture and export Brass Stop Plugs Nickel Plated Brass Slotted Plugs made of Polyamide 6 and Brass are used wherever threads previously cut must be closed for preventing dust, dirt and foreign matters from entering the enclosure or equipment. Size Thread Thread Length L Total Height H ROD Dia D M 12 M 12X1.5 12.00 15.00 16.00 M 16 M 16X1.5 12.00 15.00 20.00 M 20 M 20X1.5 12.00 15.00 25.00 M 25 M 25X1.5 15.00 18.50 30.00 M 32 M 32X1.5 15.00 19.00 36.00 M 40 M 40X1.5 15.00 19.00 45.00 M 50 M 50X1.5 15.00 20.00 55.00 M 63 M 63X1.5 15.00 20.00 68.00 M 75 M 75X1.5 15.00 20.00 80.00 Material : Nickel-plated brass. EN 12164 BS 2874 - CZ 114 BS 2874 - CZ 115 c345, C 353, CDA 36000, c3602,c3604, c385, cz131,cz124, CW 614n, cuzn36pb2, cuzn39pb3 & cuzn36pb3. C 675, cz 114, cz 115, en 12165 CW 721 r & CW 722r. Application : Stop Plug used to close thread entries or means of sealing & stopping unused thread entries in flame proof enclosures . O-sealing element: Made of nitrilebutadienerubber(NBR). Characteristics: Waterproof, Dustproof, Electrical Insulation , Aging-resistant,and high ability to resist salt,acid,alkali, alcohol, grease and general solvent.