Carbon Ceramic Mechanical Seal

Mechanical seals come in a wide range of designs however the most important factor when determining how long a seal is going to last.

Carbon ceramic mechanical seal.

Kemet lapping systems are used in both manufacturing and reconditioning processes. These seals work well with the temperatures mentioned above and a ph neutral range of 7 0 9 0. It reduces leakage between the pump and the surroundings to an absolute minimum. 3 4 type 21 fluorocarbon ceramic vs.

Once in a while the ph is too high for the carbon ceramic seal material. 3 4 type 21 buna carbon vs. Carbon ceramic ni resist 17 4 silicon carbide tungsten carbide gfptfe glass filled ptfe. The mechanical shaft seal is essentially a throttle arranged around the shaft.

Most hvac applications maintain a ph from 7 0 to 9 0. Carbon is also a critical component in some of the hard face materials used in mechanical seals because it combines with metals at high temperatures to form metallic carbides. In most applications carbon ceramic seals work fine but there are certain circumstances when a different type of material for the mechanical seal should be specified. Often called teflon r.

Ceramic generally a 99 5 aluminum oxide offering excellent wear characteristics due to it s hardness. The role of the mechanical carbon differs with this high end mechanical seal and the resulting recipe is unique for these types of seals. Mechanical shaft seals this section briefly describes the design and elements of the mechanical shaft seal. The majority of seals used in pumps are typically carbon ceramic.

Common types of mechanical seal face. Tion of a mechanical seal. This is commonly seen in centrifugal pumps although this challenge also exists in other equipment such as agitators turbines compressors centrifuges and blowers. Ceramic standard on cast iron pumps.

The mechanical seals provided by bell and gossett have stainless steel metals buna elastomers a 99 5 pure aluminum oxide ceramic stationary seal face and a carbon rotating face. Carbon is standard on 316ss pumps. The most common types of seal faces are. Seal basics a mechanical seal is a device used to seal the interface between a rotating shaft and a stationary housing figure 1.

They come furnished as two pieces the seal and the seat. For use in waste water boiler feed and compressor pumps these seals have an extra long spring that accommodates variations in seal cavity length. Ceramic cannot however handle the thermal shocks don t drop them that ni resist or 17 4 seats can. Overview of ceramic seal materials.

Carbon tungsten carbide ceramic silicon carbide chrome oxide stellite ni resist and phosphor bronze. It is chemically inert and can be applied to nearly any product. The seat is comprised of the seat and the gasket. As previously stated a pump with a through shaft is not leakproof.