Fine wool felt

The different properties of different types of felt are due to the different composition of the raw materials used for its production. Depending on the purpose, fine wool felt is divided into the following types:

  • felt for oil seals, designated “C”;
  • felt for gaskets, has the symbol “Pr”;
  • felt for filters, has the symbol “F”;

Application

Fine-wool felt for oil sealsDesigned for use in stuffing box devices. Stuffing box, gland seal or gland - one of the typessealing devices подвижных соединений различных устройств и механизмов. Ввиду простоты своей конструкции это одно из самых распространённых и давно известных уплотнительных устройств. Сальники используются как уплотнения также и в  неподвижных устройствах. Применяется практически в оборудовании и механизмах  всех сфер машиностроения

Тонкошерстный сальниковый войлок предназначен для применения при небольших скоростях и нагрузках в местах где предъявляются не очень высокие технические требования. Имеет высокую плотность. Хорошо удерживают смазку в узлах трения. Сальники из этого войлока обладают высокой упругостью. Обладают стойкостью к истиранию. Предохраняет узлы и детали от пыли и воды

The most widely used are felt gland seals in the form of rings.

Felt seals made of fine wool felt, made in the form of stuffing box rings, are used at peripheral speeds of no more than 5 m/s.

It is not recommended to use oil seals made of fine-wool felt:

  • in critical structures and in conditions of increased environmental pollution;
  • with excess pressure on one side of the ring;
  • at temperatures above 90°C.

Before installation, it is recommended to impregnate the rings with a heated mixture of universal medium-melting grease (85%) and flake graphite (15%).

Fine-wool felt for gasketsused for stationary sealing devices - sealing gaskets. Typically, gaskets are used to seal adjacent surfaces for sealing purposes.

Fine-wool felt for gaskets has a number of unique properties:

  • low thermal conductivity and thermoregulatory qualities;
  • excellent heat and noise insulation ability;
  • durability, resistance to mechanical, temperature and chemical influences;
  • complete environmental safety for humans and the environment;
  • naturalness, absence of chemical components in the composition;
  • elasticity, flexible structure of the material, but at the same time strength and wear resistance;
  • the felt does not burn, but only smolders.

Thanks to this, pads made of fine wool felt have found wide application in a wide variety of areas.

Felt pads have high elasticity, soften impacts and reduce vibrations of mechanisms. Because of this, they are widely used to seal joints in fuel tanks, steering columns, gearbox plugs, filters and other joints.

Felt pads are resistant to sulfuric acid. This property is responsible for the widespread use of felt gaskets in chemical plants, as well as in petrochemical, steel and construction industries.

Fine wool felt for gaskets has a high density. Holds grease well. Has high elasticity. It is resistant to abrasion. Protects components and parts from dust and water.

Fine wool felt for insulation очень широко применяется для виброизоляции и шумоизоляции.  Он сегодня занимает первые места среди акустических материалов. Он обладает рядом характеристик, которые присущи звукопоглощающим материалам высокого класса. Используется для шумоизоляции   многими производителями  автомобилей, включая и все именитые немецкие фирмы, которые, также  используют  войлок в своих штатных решениях.

It is widely used in construction, and recently there has been a steady upward trend in the use of this material. This is due to the fashionable trend towards the use of environmentally friendly and natural materials.

Raw materials used for production

The composition of raw materials used for the production of fine-wool felt is regulated by regulatory documents (GOST or TU) according to which felt is produced, and must comply with the following standards for composition and quantity:

  • Type of fiber - Mass fraction of fibers in the mixture, %,
  • Natural fine wool of at least 60 quality – 30%;
  • Natural semi-fine wool -20%;
  • Natural semi-coarse wool – 25%;
  • Large fine and semi-fine combed tow and fine sheepskin wool – 25%.

Specifications:

Depending on the purpose, fine-wool felt is manufactured with different technical characteristics. Below are the characteristics of fine wool felt for gaskets and fine wool felt for oil seals.

Name of the indicator of fine wool felt for gaskets:

  • Standardized humidity, % – 13
  • Density, g/cm — 0.39±0.02
  • Tensile strength kgf/cm2, not less than -30
  • Elongation at break, %, no more than – 135
  • Mass fraction of free sulfuric acid, %, no more than – 0.5
  • Mass fraction of plant impurities, %, no more than — 0.5
  • Mass fraction of non-wool fibers, %, no more than — 5
  • Mass fraction of mineral impurities%, no more than – 0.12

Name of the indicator of fine wool omental felt:

  • Standardized humidity, % – 13
  • Density, g/cm — 0.44±0.02
  • Tensile strength kgf/cm2, not less than - 35
  • Elongation at break, %, no more than – 135
  • Mass fraction of free sulfuric acid, %, no more than – 0.5
  • Mass fraction of plant impurities, %, no more than — 0.5
  • Mass fraction of non-wool fibers, %, no more than -5
  • Mass fraction of mineral impurities%, no more than – 0.12

Where to buy fine wool felt

В  интернет магазине FULL SET   Харьков, представлен полный ассортимент войлока тонкошерстного. Мы поможем подобрать Вам подходящий по размеру и толщине лист войлока,  необходимый  для решения вашей задачи. Всегда в наличии войлок тонкошерстный для прокладок и сальников в листах толщиной от 4 до 20 мм.

Felt is sold in sheets.

Sheet dimensions(cm):
Minimum - 140 x 160
Maximum - 180 x 220

To purchase felt, place an order through the website forms for any quantity.
We will contact you as soon as possible and help you choose the appropriate sheet based on your requirements.

Payment

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Happy shopping!