Bushings
Stein’s 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.
Typical applications include aircraft engine main shaft seals, compressors, pumps, and high-speed processing equipment. Configurations include either a floating or fixed design depending on the tolerances of the specific applications
Key Bushing Features:
 Floating bushings move radially, but are captured axially in the housing with spring
■ loading, to better tolerate any shaft movement
Available in a wide variety of materials suitable to each application: alloy, steels,
■ 300/400 series stainless steel, Inconels, Hastelloy, ceramics and carbon graphite
Types of Bushings:
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Fixed
Solid carbon |
Floating
Solid metal |
Segmented
Carbon insert and metal banded |
General Bushing Performance Characteristics:
Shaft rotation speeds up to 152.4 meters per second (500
feet per second)
Temperature ranges up to 300° C (500° F)
Pressure ranges up to 20,000 KPa (3000 psi)
Diameter sizes range up to 40 cm (18 in.)
 NOTHING MUCH GETS PAST OUR SEALS ™
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