78020Metal face seal
Metal face seals are designed for use in severe service conditions at relatively low speeds. They consist of two identical metal sealing rings and two cup springs made of nitrile or fluoro rubber compounds. They provide reliable protection against solid and liquid contaminants as well as leak-proof retention of lubricants. They are suitable for a range of applications where effective protection is required against sand, soil, mud, water, etc.
Dimensions
| d1 |
max. 198.12 mm
|
Shaft diameter |
|---|---|---|
| D |
254 mm
|
Housing bore diameter |
|
± 0.1 mm
|
Tolerance housing bore D | |
| B1 |
44.45 mm
|
Operating width |
|
± 1.27 mm
|
Tolerance operating width B1 | |
| B |
21.21 mm
|
Housing bore depth |
| d3 |
min. 201.68 mm
|
Seal inside diameter |
| D1 |
max. 226.31 mm
|
Shoulder diameter |
| b |
max. 38.1 mm
|
Width of metal sealing rings |
| r |
max. 1.47 mm
|
Radius |
Materials
| Primary sealing element |
Steel
|
| Energizer |
Nitrile rubber (NBR)
|
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