Used for compression of fixed disconnected joints under working area pressure to 0,5 МПа, protection of caves from dust and dirt.
Depending on purpose the cords are classified on the following types:
| Classes | Function | Temperature, ˚С | Working area |
| 1 | Acid-alkali-proof | – 30 до + 50 | Acid and alkali solutes to 20% concentration |
| 2 | Heat-proof | – 30 до + 140 | Air, nitrogen and inert gases (to + 900С), water steam (to + 1400С) |
| 3 | Frost-proof | – 45 до + 50 | Air, nitrogen and inert gases |
| 4 | Oil-petrol-proof | – 30 до + 50 | Oil, petrol |
| 5 | Food industry | – 30 до + 50 | In contacting with food |

Cords are made of three grades of firmness:
- М - small,
- С - average,
- П – raised.
Cords can be circular and rectangular sections. Storage period: 3 years .
«Zavod ATI» has been acknowledged as an reliable and successful supplier.
We offer to your attention a modern asbestos-free materials under its own brands: GRAFITEX, CERAMITEX, GrafMet.