Attributes . Body: High phosphorous FDA nickel plated brass; Back-up washer: High phosphorous FDA nickel plated brass; Collet: High phosphorous FDA nickel plated brass; O-ring: FKM fluoroelastomer conforming to FDA standards; Base: High phosphorous FDA nickel plated brass; Thread sealant is intentionally left off product so the appropriate sealant for the application can be applied . Names