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12
2022
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01
What is an O-ring rotary seal?
O-type rotary seal ring is a dynamic seal. O-type rotary seal ring is composed of a slip ring filled with polytetrafluoroethylene (FTFE) and a rubber O-ring ring that provides elasticity. It is used to seal rotating or oscillating rods, shafts, Pins, rotary joints, etc. Rotary hydraulic rotation exists in various industrial fields such as construction machinery and automotive equipment. It is a two-way 0-type rotary seal ring that can withstand pressure or alternating pressure from both sides.
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Type ORotating seal ringIt is a dynamic seal. The O-shaped rotating sealing ring is composed of a sliding ring filled with polytetrafluoroethylene (FTFE) and a rubber O-shaped sealing ring that provides elasticity. It is used to seal rotating or swinging rods, shafts, pins, rotating joints, etc. Rotary hydraulic rotation exists in various industrial fields such as construction machinery and automotive equipment. It is a two-way 0-type rotary seal ring that can withstand pressure or alternating pressure from both sides.
An O-ring is a seal ring used for rotation (also known as a shaft-specific seal) and has limited uses, but if it is used within its limited range and special attention is paid to clearance, lateral thrust and end-face runout, it will be at a surface speed of up to 8 m/s.
The performance of an O-ring as a rotating seal ring depends almost entirely on its operating temperature. Regardless of the sealing material you choose, it is not possible to apply it to operating ambient temperatures below about -30°C or above 95°C, especially when the surface velocity is high. However, in fact, in addition to the O-ring may generate heat due to friction, it is also necessary to consider the heat of the adjacent bearing. At this time, it may be necessary to separate the bearing from the O-ring as much as possible. If this is difficult to achieve, a long enough bearing can be used to promote sufficient heat dissipation.
Sometimes, in order to obtain a satisfactory sealing effect, it is necessary or necessary to add elastic load to the rotating seal ring. Rubber can be used to support the seal ring and the soft seal ring respectively. Both methods are better than mechanical springs. The use of inclined grooves to place the O-ring seal has also achieved some success, in which the loading pressure guarantees the lateral thrust.
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