Central has been providing millions of insulating unions since 1956. This history has proven our unions to have the long life and reliability that is required. Our insulation is molded and bonded on, having no loose parts to assemble during installation. This means fast, one-time, fool-proof installation without fear of leaking, cracking, or accidental shorting.

Ground Joint or "O" Ring

Central's ground joint connection provides a long reliable life with a seal which is one of the most widely used in the oil and gas industry.

"O" ring unions provide a leak-proof static seal. They can be removed and reused in the field without replacement or damage to the insulator.

Being one of the oldest manufacturers of insulating unions, we have perfected a large variety ranging up to 3000 psi working pressures, and sizes from 1/4-inch to 3 inches. Their dielectric strength go far beyond the toughest requirements. Also, our delivery is usually from stock, which means added assurance. We wish to serve you!

Quality Construction

Central products are carefully engineered and manufactured to perform the function for which they are recommended on our literature. Our recommendations are based on sound engineering principles supported by laboratory test data, both non destructive and destructive; nevertheless, our products must be properly installed and used in accordance with good judgment and proper training. While all statements and data offered herein are believed to be accurate and reliable, they are not to be taken as a warranty or representation for which Central Plastics assumes responsibility. Statements or suggestions concerning possible use of products or procedures are made without representation or warranty that any such use or procedure is free of patent infringement.