Stein Seal Co.

Stein Seal's line of precision crafted circumferential seals are perfect for low-pressure applications where minimal, controlled gas leakage, high temperatures, unlimited axial shaft movement and low wear are critical. They can be used independently or as part of a sealing system. The exceptionally lightweight carbon material and split housing capability make it easy to install, remove or repair seals in limited space areas.

Stein Seals extensive line of precision crafted face seals meets our customers demanding criteria for innovation, performance, versatility and reliability. Whether used independently or as part of a sealing system, our face seals are the smart choice for gas and liquid applications that require high-pressures and high shaft speeds, with moderate axial shaft movement.

Steins bushing seals are the perfect choice for high-pressure gas and liquid applications. Each bushing seal is custom designed to fit the application and is often combined with our other seals to create sealing systems that meet the most stringent operating requirements. The bushing seal is a sleeve that forms a small clearance about a shaft where leakage is limited by flow resistance between the clearance and the bushing. Bushings can be designed in either a fixed or floating sleeve configuration depending on the operating clearance requirements, shaft movement, vibration or misalignment. For machinery such as steam turbines, segmented bushings allow easy maintenance access to the shaft.

The Stein Seal Company has developed an innovative, patented, Film Riding (Dry Gas) Circumferential (Ring) Seal (FRCS). The FRCS seal utilizes carbon rings that ride on a film of gas resulting in an infinite wear life in theory. The FRCS has no carbide components to crack or shatter since the design incorporates a hard coated ductile metal runner. The FRCS design is inherently more compact than a dry gas face seal with the carbon ring having a smaller radial profile. This feature allows the FRCS to fit in a small radial and axial envelope that reduces the complexity of a retrofit labyrinth or bushing seal without modifying the compressor case. The FRCS is easily adaptable for retrofits by combining several seal rings and multiple injections of process compatible gasses and educators to complement process purity.

The Stein Seal Company has developed API (American Petroleum Institute) 682 seals for the oil and gas industry market. Stein Seal has designed, manufactured and tested a Type A pusher seal, Arrangement 3, dual pressurized cartridge seal for this market. In an Arrangement 3 design the barrier fluid pressure is kept higher than the seal chamber pressure and is designed to handle and contain hazardous and light hydrocarbon fluids. The process-end face (inner) seal is specially balanced to handle reverse pressures while the atmospheric-end (outer) seal will contain the barrier fluids.