These cool Empress steam and water valves are reasonably easy to rebuild using stock rubber sheet and cord from mcmaster carr. Make sure you use a high durometer cord on the end piece and specify "high strength EPDM" for the sheet to make the big discs. high strength has a higher temp rating. i used center punches to cut the discs. EPDM might work best since silicone rubber may be too soft. also, for those end seals I think the old Faema E61 machines use some that are a direct fit and really hard durometer, but a length of cord and a square foot of sheet do a lot of valves.