I have some o-ring kits for sale,they include every o-ring needed for the specific model. '05 HPR/LPR/RAMMER. '08 HPR/LPR/RAMMER. '09 HPR/LPR/RAMMER/OOPS.
I've got a couple of each kits @ £7.50 each all in.
It appears that alot of them are common,but the '05 is completely different from the others,the '09 has a extra "stiffer" o-ring and the '08 has 1 thicker o-ring which makes them all different from eachother,I'd say no but it's upto you.