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Part of Your Design
PRODUCT GROUPS
SEALING EQUIPMENT
OIL SEALS
Oil seals are machine elements that work on rotating shafts in mechanical systems and are used to prevent oil and/or grease from leaking into the outside environment, and to prevent dust, dirt, mud and other foreign substances from the outside into the system. Although they are also used for sealing non-oil liquids, powdery solid particles and various gases, they provide their essential functions in environments where there is an effective lubricant that allows oil film formation.
The figure on the right shows the cross-section and basic components of a general oil seal.
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main sealing lip, it is the main element of the felt that provides dynamic sealing. It is the basic component that allows the formation of a microscopic oil film by continuously applying a certain radial force on the moving shaft and thus ensures the fluid tightness. It is the carrier of the helical spring in conventional oil seals. Its geometry is determined by the application conditions.
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sealing edge,kIt is the linear region of the eel lip that is in direct contact with the shaft. Just as the main sealing lip is the most critical component of the seal, the sealing edge is the most critical area of the seal lip. It is essential that no damage occurs on this linear line before assembly or during operation.
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lip trace tape,kIt is the contact area formed between the shaft and the lip along the sealing edge on the lip after the insert is attached to the shaft. Both the elastic deformation caused by the effect of the radial force and the mechanical wear as a result of the operation determine the dimensions of the trace band in question. Excessive increase in bandwidth as a result of wear causes lip leakage.
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powder lip,DIt prevents dust, dirt, mud and other foreign substances in the outdoor environment from entering the system. At the same time, it creates a chamber between the main sealing lip and itself in classical oil seals, and ensures that the grease applied to this area is retained. Depending on the place of use, it can be a whole with the main sealing lip or it can be produced from different materials such as wool, textile, PTFE, PU.
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garter spring,threeIt is used in order to balance the radial force loss that occurs as a result of the temperature increase that occurs during the acclimatization and the swelling of the rubber lip of the felt under various chemical effects over time. The thermal and chemical expansion (hence the radial strength loss) of the steel wire in the spring is very limited compared to the rubber.
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metal hoop,pIt gives rigidity and strength to the piece, and ensures that the felt is firmly seated in the slot. In rotary shaft applications, movement of the sealing element in the slot is never desired and can cause serious performance problems.
It provides rigidity and strength to the part and ensures that the felt fits tightly in the slot. swivel shaft _cc781905-5cde-3194-bb358-cf58d_ _cc781905-5cdecde-3194-bb358-cf58d_13365 3194-bb3b-136bad5cf58d_ applications should never cause serious movement of the sealing element and serious movement of the seal
is a condition that can cause performance issues.
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Felt outer diameter,DRecommend shaft seals are tightly mounted in the housing and the outside diameter of the seal is fixed in the housing, except for some exceptional applications. This area provides static sealing on the housing surface it contacts. Depending on the application conditions, it may be designed from metal or rubber material.
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felt front,DRecommend is the side of the oil seal facing the side to be sealed. In conventional applications, the side to which the spring is attached is usually the front of the felt.
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felt back,threeIt is the surface that is mostly facing the outside and therefore exposed to external influences, perpendicular to the shaft axis and not in contact with the fluid to be sealed in classical applications. Depending on the application conditions, rubber coated or metal surface can be preferred.
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