Abstract: A casing spacer that fits around a carrier pipe at various intervals along the length of the carrier pipe for the purpose of positioning the carrier pipe within a casing pipe. The casing spacer is equipped with roller assemblies on the outside surface of the casing spacer. The roller assemblies are protected by guards to help the roller assemblies avoid obstacles that may exist on the inner surface of the casing pipe.

Abstract: A washer for protecting a flange. The washer is capable of withstanding high compression loads, protecting a flange plate from galvanic corrosion, and maintaining torque load when a flange joint is exposed to extreme heat. The washer has two primary components—an inner ring and an outer ring—that are preferably made of materials having dielectric properties, particularly with respect to electrical insulation. The inner ring and outer ring are preferably fit together using an interference fit.

Abstract: A casing spacer equipped with low-profile, high-load-capacity roller assemblies that require less force to install a carrier pipe inside a casing pipe. The low-profile, high-load-capacity roller assemblies are manufactured from a material designed to carry a heavy load, which material will not wear away as the carrier pipe is pushed or pulled through the casing pipe. The wheels of the low-profile, high-load-capacity roller assemblies are manufactured from an electronically isolating material to prevent contact of dissimilar metals, thereby mitigating galvanic corrosion.

Abstract: A gasket that is capable of withstanding high compressive cads, protecting a flange joint from galvanic corrosion, and preventing fluids from leaking through a flange joint when the flange joint is exposed to extreme heat.

Abstract: A casing spacer which allows for the positioning of a carrier pipe or set of carrier pipes in a desirable location inside a casing pipe.