The 1590Z120G is a pack of two pre-formed silicone gaskets for the 1590Z120 diecast aluminum enclosure, the 125 x 80 x 59 mm member of the watertight 1590Z Type 4X/ 6P series. Maintenance teams and OEMs keep it on hand to restore the lid seal after repeated opening, or to re-gasket an enclosure during service.

Each gasket is a one-piece silicone rubber part measuring 4.761 in [120.93 mm] by 2.993 in [76.03 mm], with a profile of 0.098 in [2.50 mm] by 0.091 in [2.30 mm]. The drawing names an alternate material manufactured by SHIN-ETSU, Type KE-931U and KE-941U (1:1) mixture. The part page lists the size as 4.76 in x 2.99 in x 0.1 in (121 mm x 76 mm x 3 mm) and an IP66 rating. The series rates the gasket from -40C to +150C (-40F to 302F).

The ordering table lists 1590Z120G as the replacement gasket (pack of 2) for the 1590Z120 (natural), 1590Z120BK (black) and 1590Z120GY (gray) enclosures. In these enclosures the gasket sits in a tongue and groove joint between box and lid, and it is supplied loose rather than pre-installed.

The gaskets are RoHS and REACH compliant and ship shrink wrapped, with a listed shipping weight of 0.01 lbs (0.00 kg).