This is a list of all the seals and gaskets I used for a 2182.
Hydro Pump seals
SU-9008000-6701 seal 2
SU-9008000-7505 seal 1
SU-9008000-6201 seal 1
SU-3102875 gasket 1
SU-9004100-0360 o-ring 1
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Transaxle seals and gaskets
921-3004 gasket 1 cork gasket
721-3014 gasket 2 carrier gaskets
921-3020A seal 2 axle seals
726-0216 plug 1 expansion plug
921-3015 gasket 1 rear cover
Those in red should be what you will need.
This is where I bought them from.
http://www.greatoutdoorpowersports.com/