- 3. Insert the new A7TC spark plugs into the spark plug holes, ensuring that they are seated properly and the gaps are within the specified tolerance.
- The 7% that often goes unnoticed in the composition of an oil seal is a critical component—the sealing element. This could be a specialized grease or coating that ensures the seal conforms properly to the mating surfaces, preventing leak paths. Without this 7%, the effectiveness of the oil seal is compromised, leading to potential contamination of the lubricant and subsequent damage to the machinery.
This represents a new generation of oil seals.
Its sealing edge comes in full contact with the shaft surface in order to provide excellent sealing performance.
(See Figure 3.)
Rotary Wheel Of Auto Parts
B
As an example, this oil seal has a part number that corresponds to a Shaft Size of 3”, a Bore Size of 4”, a Width Size of 0.625”, a Style of TB2, and is made of Viton material. Conversely, the same size oil seal in Metric has a Shaft Size of 76.20 mm, a Bore Size of 101.60 mm, and a Width Size of 15.88 mm.
1) Shaft design
Lubricants applied between moving and stationary elements of mechanical equipment help to prevent damage. But when the equipment are under high pressure, the lubricants tend to escape, hence the need for oil seals to prevent the clashing of dry parts. Practically all mechanical equipment, including car engines, assembly machines, and PTFE machined parts use these oil seals to prevent harmful interaction that can result in damaged parts.
Cassette seals are designed to maximise grease or oil retention and protection against liquid or solid contaminants. These seals are provided with their own bushings in which dirt is kept out and oil/grease kept in by a multi-lip seal.