Flexi-Seal? Signal? FMS Kit, 418000 - LOWEST PRICES for Flexi-Seal? Signal? FMS Kit online at - Flexi-Seal? FMS is a temporary containment device, indicated for bedridden or immobilized, incontinent patients with liquid or semi-liquid stool. It is designed to safely and effectively contain and divert fecal matter, protect patients' wounds from fecal contamination and reduce both the risk of skin breakdown and spread of infection.