Section 6-77-199 - Caulked bell and spigot joints(a) Each cast-iron caulked bell and spigot joint that is subject to pressures of 25 p.s.i.g. or more must be sealed with: (1) A mechanical leak clamp; or(2) A material or device which: (A) Does not reduce the flexibility of the joint;(B) Permanently bonds, either chemically or mechanically, or both, with the bell and spigot metal surfaces or adjacent pipe metal surfaces; and(C) Seals and bonds in a manner that meets the strength, environmental, and chemical compatibility requirements of section 6-77-20(1) and (2) and section 6-77-41.(b) Each cast iron caulked bell and spigot joint that is subject to pressures of less than 25 p.s.i.g. and is exposed for any reason, must be sealed by a means other than caulking.[Eff ] (Auth: HRS § 269-6) (Imp: 49 C.F.R. §192.753, OCT 1, 1990)