Flush mount process connection. Material: 316L. Seal: silicone O-ring. FDA, EHEDG, 3-A compliant. Usage: FMI51/FMI52, FTI51/FTI52, FTL20H, FTL31/FTL33, FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL80/FTL81, FTL260, FTL330H/FTL330L, FTW23, FTW33, PMP135, PTP35.