Ring Type Joint Gaskets

API-Ring-Joint-Gaskets Lone Star Sealing Technologies

Lone Star’s Ring Type Joint (RTJ) Gaskets are precision machined, metallic sealing rings suitable for high pressure and high temperature applications. RTJ gaskets are designed to seal by “initial line contact” or wedging action between the mating flange and the gasket. By applying pressure on the seal interface through bolt force, the softer metal of the gasket flows into the micro-fine structure of the harder flange material, creating a very tight and efficient seal. 

Lone Star RTJ gaskets are manufactured in accordance with API-6A and ASME B16.20 specifications and come in four basic profiles:

R-Oval – Ring Gasket

R-Octagonal – Ring Gasket

RX – Ring Gasket

BX – Ring Gasket

These basic shapes are used in a variety of applications with pressures up to 20,000 PSI. The dimensions are standardized and require specially grooved flanges by where a corresponding “R” or “BX” number is assigned for pipe size and pressure class for gasket identification.

To ensure cost effectiveness and reliability, Lone Star’s CNC automation and state-of-the-art coordinate measuring systems provide reliable benchmarks for our on-going quality control operations.

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About Lone Star Sealing Technologies
Lone Star Sealing Technologies was founded in 2004 to better serve the customers of Lone Star Fasteners and Walker Bolt. Our core product line consists of API Ring Joint Gaskets, Proprietary Wellhead Gaskets and Spiral Wound Gaskets. We also provide specialty cut gasket services for our OEM clients as well as general distribution for Raised Faced and Full Faced flange gaskets to ANSI B16.5 dimensions. LoneStar have a variety of high quality of gaskets and other options for fluid sealing applications built to endure, even under the toughest conditions. You can be confident that we go to every extreme to make sure that our products are built to perform. As manufactures and distributors of industrial gaskets for the oil and gas, and petrochemical industries, we know that it takes to produce quality that lasts and we continually tweak product lines in an effort to improve even the most proven gasket in the industry. In 2005 Lone Star acquired the assets of K&W Manufacturing, a Houston based API Ring Gasket producer. Established in 1964, K & W Manufacturing is an industry leader, among a few selected manufacturers in the world, approved by the American Petroleum Institute to apply the API monogram to Ring Joint Gaskets. In 2006 Lone Star acquired Grange Gaskets and Grange Precision Engineering (now Lone Star Grange) based in Leeds, England. Since 1948, Grange has been one of the United Kingdoms premier specialty gasket companies, specializing in Heat Exchange Gaskets of all types and configurations. Grange is world renowned for it's specialty clad gasket capabilities and quick service on spiral wound gaskets.

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