This rebuild/reseal kit is for Spirit/Spurs and derivatives that use mineral oil.  This kit is not for SY (Shadow) cars using RR363.  This is the most complete kit available as it includes not only new Nitrile O-rings but all new retaining rings, springs and the seal for the fluid feed pipe as well. 
BTW can rebuild and test your pumps for you for $195 ea. which includes the cost of the kit.  We also stock new springs and adapter fittings. Just ask.