The 1594DGASKET is a silicone gasket kit, supplied as a 2-pack, listed by the manufacturer as a gasket kit for 1594 "W" (water-tight) enclosures. In the 1594 series ordering table it is the replacement gasket for the D size, which covers 1594DBK, 1594DGY, 1594DSBK, 1594DSGY, 1594DWBK and 1594DWGY (series table size 131.5 x 66 x 55 mm).

Maintenance technicians use it to replace a worn or damaged seal on a water-tight D-size box, while OEM engineers can use it to raise the protection level of a standard or economy enclosure. The series literature states that standard and economy versions are rated IP54 but can be upgraded to IP66 with gaskets and screws with o-rings; the matching o-ring machine screws are sold as 1594WMS100 in packs of 100. The series photos show the gasket installed on the lid.

The gasket material is silicone and the part page lists an IP65 rating. Each kit ships shrink wrapped with a shipping weight of 0.02 lbs (0.01 kg). The part is RoHS and REACH compliant, and it is identified by UPC 623980992631 and UNSPSC 39121301.

When ordering, match the gasket letter to the enclosure size: the 1594DGASKET is for D-size bodies only; other sizes in the series use their own gasket part numbers such as 1594CGASKET or 1594EGASKET.