Foamet (Foam Coated Metal). Used with 35154-52 metal retainer. OEM replacement reference 35169-52. James” Foamet gasket material has an aluminum core with a thin nitrile synthetic rubber foam layer bonded to both sides. Note: See James 901005 for complete mainshaft retainer kit which includes 35154-52 metal retainer; 35169-52 gasket and 35151-52A oil seal.