Ceramic standard on cast iron pumps.
Carbon ceramic mechanical seal.
Carbon tungsten carbide ceramic silicon carbide chrome oxide stellite ni resist and phosphor bronze.
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.
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.
Often called teflon r.
Ceramic cannot however handle the thermal shocks don t drop them that ni resist or 17 4 seats can.
Ceramic generally a 99 5 aluminum oxide offering excellent wear characteristics due to it s hardness.
Carbon is standard on 316ss pumps.
Kemet lapping systems are used in both manufacturing and reconditioning processes.
3 4 type 21 buna carbon vs.
Machine lapping is the production method of lapping mechanical seal faces.
Mechanical shaft seals this section briefly describes the design and elements of the mechanical shaft seal.
Common types of mechanical seal face.
It is chemically inert and can be applied to nearly any product.
This is commonly seen in centrifugal pumps although this challenge also exists in other equipment such as agitators turbines compressors centrifuges and blowers.
Carbon ceramic ni resist 17 4 silicon carbide tungsten carbide gfptfe glass filled ptfe.
The seat is comprised of the seat and the gasket.
The majority of seals used in pumps are typically carbon ceramic.
Seal basics a mechanical seal is a device used to seal the interface between a rotating shaft and a stationary housing figure 1.
Tion of a mechanical seal.
The mechanical shaft seal is essentially a throttle arranged around the shaft.
Most hvac applications maintain a ph from 7 0 to 9 0.
3 4 type 21 fluorocarbon ceramic vs.
Overview of ceramic seal materials.
The most common types of seal faces are.
Once in a while the ph is too high for the carbon ceramic seal material.
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.
Systems with high ph levels.
It reduces leakage between the pump and the surroundings to an absolute minimum.
The seal is comprised of the case spring diaphragm and washer which come locked together as one piece.
The role of the mechanical carbon differs with this high end mechanical seal and the resulting recipe is unique for these types of seals.
As previously stated a pump with a through shaft is not leakproof.
Mechanical seals come in a wide range of designs however the most important factor when determining how long a seal is going to last.
