The 1590Z250G is a pack of two silicone replacement gaskets for the 400 x 230 x 180 mm 1590Z250 diecast aluminum enclosures in natural, black (1590Z250BK) and gray (1590Z250GY). It is the spare to order when the original gasket is worn, damaged or lost during service.

1590Z enclosures seal with a replaceable one piece silicone rubber gasket seated in a tongue and groove joint to keep out dust and water. The series rates the gasket from -40C to +150C (-40F to 302F), and the part page lists an IP66 rating for this part.

The listed size is 15.61 in x 8.92 in x 0.16 in (396 mm x 227 mm x 4 mm), and the pack ships in a bag at 0.11 lbs (0.05 kg). It fits the 1590Z250, whose drawing lists the purchased assembly as box, lid, silicone gasket, 4 cover screws and 4 ground screws with washers, and recommends a cover screw torque of 17.7-18.6 lbf.in (200-210 cN.m) when the lid is refitted.

The 1590Z250G is RoHS and REACH compliant. Other spares for the 1590Z250 are SC599-12 extra lid screws, the 1590Z250PL steel inner panel and SCGM6-20 extra panel screws.