Mechanical seal designation
153 Д 71 040 7 7 1 К К
The example of a dual seal designationDesignation of trade mark
It belongs to HERMETICA. Figures are determined by parameters of the seal and combination of certain design features in accordance with the company’s standard СТП-1-305310-92.
Designation of seal configuration
| Д | dual seal of back-to-back configuration |
| Т | dual seal of tandem configuration |
The letter in the designation of a single seal is absent.
Designation of execution
It is determined by specific design features
Shaft (sleeve) diameter
Where a seal is installed
Designation of sealing ring material
| Hermetica standard | Material | International designation |
|---|---|---|
| 2 | Carbon graphite resin impregnated | B |
| 3 | Carbon graphite antimony impregnated | A |
| 4 | Aluminium oxide | V |
| 5 | Фторопласт композиционный | Y |
| 6 | CrNiMoSteel | E |
| 7 | Silicon graphite | Q32 |
| 8 | Silicon carbide | Q2 |
| 9 | Tungsten carbide | U2 |
Designation of mating ring material
Designation of secondary seal material
| Hermetica standard | Material | International designation |
|---|---|---|
| 1 | PTFE | |
| 2 | HNBR | P |
| 3 | NBR | E |
| 4 | FKM | V |
Designation of spring material
|
Hermetica standard |
Material |
International designation |
|---|---|---|
| К | Steel 12Х18Н10Т | F |
| E | Steel 10Х17Н13М2Т | G |
| И | Steel 06ХН28МДТ | G3 |
| М | Hastelloy | M3 |