Rubber cannot cut steel, however the formation of carbon based cutting agents through exposure to ingress over time between the mating surface of rubber and steel will create a wear pattern and the illusion that the rubber has actually cut steel.
Seal gone! Remove driveshaft pull seal out, check shaft for damage/wear. Refit new seal and rebuild
Your toilet rubber seal may be leaking due to wear and tear over time or improper installation. To fix it, you can try tightening the bolts connecting the toilet to the floor, replacing the rubber seal, or seeking professional help from a plumber.
No a rear main seal is the rear seal on the crank shaft of the engine. That portion of the engine is wear the crank shaft connects to the clutch and pressure plate (manual transmission) or where it connects to the torque convertor automatic transmission.
it is possible to get a small amount of seeping from the hole and not have a problem, if the water is dripping or running from the bleed hole then the pump needs to be replaced as a unit, they are generaly sealed units and the water my be seeping past the shaft because of shaft wear and not seal wear.
Its wear there is no rubber gromet for the stem and bowl, with a glass-on-glass setup the bowl and stem are 'frosted' and fit together withour a rubber seal
The rubber or plastic seals become brittle with age and crack, or simply wear out.
Rubber tires are preferred to steel tires because if we had steel tires driving over the smallest pebble would be a very bumpy ride. Rubber tires are flexible and will be smooth when going over rocks. Not to mention, if we had steel tires the government would have to replace the roads everyday with the amount of people tearing them up with steel tires. Also, rubber tires wear out and that means you will have to buy new ones again..
Usually. The shaft seal will leak water/anti-freeze onto the shaft bearing which will cause the bearing to wear. The worn bearing will squeel before it is destroyed or locks up.
About the only place the AC compressor will leak is around the seal. Seal leaks are typically caused when the shaft bearing starts to wear, resulting in a loose shaft. That ends up pounding hard on the seal and the seal will no longer be able to hold the pressures of the refrigerant. Bottom line, if the compressor is leaking, you'll need to replace it.
The principle parts of a centrifugal pump are the pump casing, also called a volute, and the impeller. The other parts are the pump shaft, bearing(s), shaft seal, the wear rings, and the inlet and outlet. The impeller is mounted on the pump shaft. The pump shaft is coupled to an external power source like a motor. The motor turns the shaft, the shaft makes the impeller turn and the fluid being pumped is put in motion. The volute causes a change in pressure in the fluid. The shaft seal stops the fluid from leaking out of the casing (volute). The wear rings separate the high and low pressure areas inside the casing. The bearing(s) make the shaft turn easier. The inlet and outlet parts of the casing connect to the fluid piping system.
A seal worn shaft will show polished tracks or grooves. While you may be able to feel the smaller diameter or shaft wear area with your fingernail, often the damage will show only when new seals leak. Speedi sleeve is a highly engineered, precision part of finest stainless steel. Its ultra thin wall design allows it to be used with out changing the seal size. Speedi sleeves are built with a removable installation flange. The installation tool included in every box allows the sleeve to be pulled on. Due to this design; it is often possible to install Speedi sleeves without removing the shaft. With the sleeve in place, the size of seal which was previously used will still be a perfect fit, eliminating the need to purchase new seals, as is invariably necessary when worn shafts are reground.
It depends on the specific pump. For most: the impeller, the wear ring & mechanical seal. In a pump with a packed stuffing box, the packing. In some pumps, the shaft coupling.