Timing Case seals 750 commando

Can someone tell me if i have the right numbers for the two seals in the timing case please,, I have 048023 (from oldbritts) and 063609 ( from british spares) but naturally i would want to buy both from the same supplier so am a bit confused. i tried my local SKF bearing place for a generic replacement but no go

Thanks
Rob

063609 broken link removed

048023 broken link removed