G.A. Murdock Inc., of Madison, S.D., introduces its Mur-lok™ quick-connect fittings (made in the USA) that are constructed of polypropylene, which is the material of choice for drinking water and beverage applications as it offers a higher level of chemical resistance. All tube connections utilize a dual EPDM o-ring technology, which creates a better seal and is more chemically resistant than the o-rings found in standard fittings.