Phone:       440-684-0601
Fax:            440-684-0656
Toll Free:   800-468-5404
                                                                    
Hughes-Primeau Controls celebrates the life and work of Henry G. Hughes
1933-2006
Hughes-Primeau Controls combines 135+ years of selling engineered heat tracing systems with over 50 years of experience from Thermon.

No other company in Ohio, Western Pennsylvania, or West Virginia
can match our heat tracing solutions, inventory, nor expertise.
                  A Drug Free Workplace


     


 
Click here: for the LOKRING Website

The leak-free seal of a LOKRING fitting is the result of LOKRING Technology Corp. patented elastic strain pre-load. During installation, the axial movement of the LOKRING driver over the fitting body swages the body onto the pipe or tube surface, compressing the pipe/tube wall, first elastically and then plastically. The pipe/tube wall resists this swaging action, generating high unit compressive loads at the contact points between narrow sealing lands inside the fitting body and the pipe surface.

These contact stresses are sufficiently high to plastically yield the pipe/tube surface under the sealing lands, forming a perfect 360 deg F circumferential, permanent, metal-to-metal seal between the pipe/tube and the fitting body. The driver, which experiences a small increase in diameter (elastic strain) during installation, exerts an elastic, radial preload on the metallic seals for the life of the connection.