Rubber cord, rubber profile ACCORDING TO THE CUSTOMER'S DRAWINGS. PRODUCTION, Dnepropetrovsk region.

РТИ, manufactured according to GOST 6467-79, are rubber cords with a rectangular and round cross-section, used in fixed joints for sealing and mud protection. They can be of 6 types:
- acid-alkaline-resistant - 1st - acid-alkaline solutions less than 20%, 135
морозостойкость -30°;
- heat resistant – 2nd – hot gases (air, nitrogen, other inert), water vapor –
lower temperature limit -30°;
- frost-resistant - 3rd - cold air, cooled inert gases, nitrogen - up to
- 45°;(//tractor-service.com)
- oil- and gasoline-resistant - 4th - liquidfuel andfuel oil - operated at t° not lower
-30°;
- unified - 5th - for assembling devices and mechanisms in tropical.
areas during operation in any environment, the cooling of which is possible up to -50°;
- used in the food industry - 6th - food products - temperature
the minimum for the working environment is -30°.
For all types of rubber cords with a round and rectangular profile, the maximum operating temperature limit is +50°, except for heat-resistant ones - +140°. Products have several degrees of hardness - M, C, P (respectively - small, medium, high), divided into groups according to operating pressure - 1st - 5 atm., 2nd - 10 atmospheres. The composition of rubber mixtures for the 6th type is controlled by public health authorities, the brand of rubber must be indicated on the label of each packaging unit (packs, bays). activities