- Despite its simplicity, the U-shaped rubber gasket's effectiveness lies in its design and the properties of the rubber used. Its durability, flexibility, and resilience make it a reliable choice for various sealing applications. It is a testament to the power of engineering that such a small component can have such a profound impact on our daily lives.
2. Oil seal structure and functions
Having problems installing oil seals? The part has had many updates in recent years, which has totally changed the installation process. In this blog, our specialists will give you information and installation tips so that these oil seals no longer cause difficulties during your overhaul or repair job.
Description
Heavy Duty Wheel Seals and Agricultural Equipment Seals can be divided into AP type, CRS type and ST type. Mainly be used in heavy pollution of agricultural machinery, construction machinery, mining equipment and trucks, buses and other environments. Compared to TC type, with special internal lubrication design, making it closed to the rotary shaft seal and bearing assembly which prevent external dirt effectively; a specially designed multi-lip inside the seal, makes it to achieve the function. Multiple external sealing lip design effectively prevents outside dirt and grease leakage immersion; the internal high-quality grease (butter) prevents muddy and water immersion.
High-Pressure Rotary seals that are used for high-pressure applications have a solid cross-section, are developed to seal a pressurized lubricant, and possess hydrodynamic waves that encounter the pressurized lubricant. These fluid waves pump lubricant into the engaged sealing interface when the shaft spins.
The introduction of skeleton oil seals
Generally said that the oil seal refers to the skeleton oil seal.The function of the oil seal is generally to isolate the parts that need lubrication in the transmission parts from the external environment, so as not to let the lubricating oil leak.The skeleton acts like the steel bars in a concrete member to strengthen and keep the seal in shape and tension.According to the structure, it can be divided into single lip skeleton oil seal and double lip skeleton oil seal.The auxiliary lip of the double lip skeleton oil seal plays a dust-proof role, to prevent the outside dust, impurities and so on into the machine.According to the frame type, it can be divided into inner frame oil seal, exposed frame oil seal and assembled oil seal.According to working conditions, it can be divided into inner frame oil seal, exposed frame oil seal and assembled oil seal.According to working conditions, it can be divided into rotating frame oil seal and round-trip frame oil seal.Used for gasoline engine crankshaft, diesel engine crankshaft, gearbox, differential, shock absorber, engine, axle and other parts.
The skeleton oil seal structure is composed of three parts: oil seal body, strengthening framework and self-tightening spiral spring.The sealing body is divided into the bottom, waist, cutting edge and sealing lip according to different parts.Generally, the inner diameter of the skeleton oil seal in the free state is smaller than the shaft diameter, that is, it has a certain amount of interference.
Therefore, when the oil seal is loaded on the oil seal seat and shaft, the pressure on the edge of the oil seal and the contraction force of the self-tightening spiral spring produce a certain radial tightening force on the shaft. After a period of operation, the pressure will rapidly decrease and even disappear. Therefore, the self-tightening force of the oil seal can be compensated at any time with the spring.
HB bsetseals specialized in producing TC, SC, TG, TB, TA, DC, TCV, TCN, cassette, combi oil seals. The oil seals quality is very good and approved by customers from all over the world. We also can make mold for non-standard type and dimensions of oil seals.
High-Pressure Rotary seals that are used for high-pressure applications have a solid cross-section, are developed to seal a pressurized lubricant, and possess hydrodynamic waves that encounter the pressurized lubricant. These fluid waves pump lubricant into the engaged sealing interface when the shaft spins.
The introduction of skeleton oil seals
Generally said that the oil seal refers to the skeleton oil seal.The function of the oil seal is generally to isolate the parts that need lubrication in the transmission parts from the external environment, so as not to let the lubricating oil leak.The skeleton acts like the steel bars in a concrete member to strengthen and keep the seal in shape and tension.According to the structure, it can be divided into single lip skeleton oil seal and double lip skeleton oil seal.The auxiliary lip of the double lip skeleton oil seal plays a dust-proof role, to prevent the outside dust, impurities and so on into the machine.According to the frame type, it can be divided into inner frame oil seal, exposed frame oil seal and assembled oil seal.According to working conditions, it can be divided into inner frame oil seal, exposed frame oil seal and assembled oil seal.According to working conditions, it can be divided into rotating frame oil seal and round-trip frame oil seal.Used for gasoline engine crankshaft, diesel engine crankshaft, gearbox, differential, shock absorber, engine, axle and other parts.
The skeleton oil seal structure is composed of three parts: oil seal body, strengthening framework and self-tightening spiral spring.The sealing body is divided into the bottom, waist, cutting edge and sealing lip according to different parts.Generally, the inner diameter of the skeleton oil seal in the free state is smaller than the shaft diameter, that is, it has a certain amount of interference.
Therefore, when the oil seal is loaded on the oil seal seat and shaft, the pressure on the edge of the oil seal and the contraction force of the self-tightening spiral spring produce a certain radial tightening force on the shaft. After a period of operation, the pressure will rapidly decrease and even disappear. Therefore, the self-tightening force of the oil seal can be compensated at any time with the spring.
HB bsetseals specialized in producing TC, SC, TG, TB, TA, DC, TCV, TCN, cassette, combi oil seals. The oil seals quality is very good and approved by customers from all over the world. We also can make mold for non-standard type and dimensions of oil seals.
In general, oil seals should be selected in the order of priority indicated in Table 1.
Another factor you need to consider is the type of lubricants that are more suitable for the seals. Check for the appropriate viscosity of the lubricant that’s compatible with the seal material.
To do this, turn the engine with a socket on the crankshaft pulley bolt until the rotor arm is pointing to the plug contact of the timing cylinder (usually No. 1, check in the car service manual), and the timing marks on or behind the pulley show exactly top dead centre ( TDC ).
The square shape of the gasket allows for a more precise fit in square or rectangular openings, ensuring a tight seal to prevent fluids or gases from escaping. Made from high-quality rubber materials such as neoprene, silicone, or EPDM, these gaskets offer excellent resistance to temperature, pressure, and chemical exposure.