Abstract: A casket having a tub, lid and pedestal base each separately molded of plastic material. The tub is integrally molded of plastic as a single unit having an endless hollow peripheral side wall formed by fluid injection, the tub having curved inner and outer surfaces. The pedestal base is also integrally molded of plastic as a single unit having an endless hollow perimeter formed by fluid injection, the base having a curved upper molded surface which supportively engages with a curved bottom surface of said tub. Self aligning and locking structure for properly aligning and connecting said tub within said pedestal base is integrally molded into corresponding mating surfaces. The lid is similarly integrally molded of plastic as a single unit having an endless hollow peripheral side wall formed by fluid injection, the lid having continuous curved upper and lower surfaces. The tub and lid are hinge connected together after molding along a common longitudinal side margin therebetween.