... materials include polypropylene, polyester, nylon, nomex, PPS,PTFE or absolute rated polypropylene micro-fiber material. 3.Mesh bags ... are constructed of nylon monofilament, polyester monofilament,or polyester multi-filament material. 4.Custom configurations, packaging and ... request. Stainless steel Ring , Polypropylene Ring , Nylon Ring. Sewing or Welded. Size#1: 7" *161/2" Size#2: 7" *32 ...