Rubber 'O' ring, Fuel Tank Sender

Schempp-Hirth Fuel Tank Earthing Plate.
(Typically used on; most SH Turbo models)

Schempp-Hirth Fuel Tank shelf screws.
(Typically used on; most SH Turbo models)

Schempp-Hirth fuel tank vent plug, used for most SH Turbos models.