FIELD: electrical engineering. SUBSTANCE: fire-resistant lead-in is provided with ring membrane with shoulders which design ensures tight connection with body and cable. Vermiculite having property to expand at high temperatures and laid into spaces adjoining membrane contributes to this tightness. EFFECT: improved sealing under conditions of fires and high temperatures. 10 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FIRE-RESISTANT CUTTING FOR CABLES AND PIPE-LINES | 1991 |
|
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| SEALED CABLE LEAD-IN | 2002 |
|
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| CABLE INPUT | 0 |
|
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|
RU2761812C1 |
| HERMETICALLY SEALED INPUT | 0 |
|
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| FLEXIBLE SHAFT | 1991 |
|
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| SEALED FIRE-RESISTANT CABLE TRANSIT | 2012 |
|
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| INCANDESCENT LAMP | 1990 |
|
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| VIBRATION-ISOLATING SUSPENSION INTENDED FOR OPERATION AT ANY ANGLE TO HORIZON | 1989 |
|
RU2006714C1 |
| FOOD PRODUCT THERMAL TREATMENT UTENSILS | 0 |
|
SU1814535A3 |
