Oil packing AP-31 and APR-31, Kharkov region.

Gland packing impregnated with fat or graphite composition, different thicknesses in coils 10 kg. Manufactured in Russia, Ukraine and China....Asbestos braided stuffing boxes are used to seal stuffing boxes of fittings, centrifugal and piston pumps, as well as various aggregates at working temperatures from -70 to +300˚C.
Braided gland packings are the most common type of sealing materials used to fill the gland chambers of fittings, centrifugal and piston pumps, and various devices. More than 70% of pumps, 80% of fittings are equipped with these packings. They differ both in the materials from which they are made and in the manufacturing methods (structure). Both of these factors significantly affect the operational properties of packings.(//tractor-service.com)
Various fibrous materials are the basis of braided fillings. In the ATI sub-sectors, threads and yarn made of asbestos, cotton, bast and chemical fibers are used for the production of woven stuffing.
An important component of fillings are various types of impregnations and fillers that give them the necessary properties.