Semi-coarse wool felt for oil seals

Raw materials used for production.

The composition of the raw materials used for the production of semi-coarse wool felt is regulated by regulatory documents (GOST or TU) according to which the 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 semi-coarse varietal sheep wool – 48%
• Sheepskin fur semi-fine and semi-coarse wool, combed semi-coarse tow – 35%
• Recovered wool and waste products from its production in purified form – 17%

Application

В самом названии войлока обозначено основное предназначение данного материала в машиностроении. Это  сальниковое устройство, сальниковое уплотнение или сальник— один из видов уплотнительных устройств 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

Полугрубошерстный 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

Depending on the purpose and shape, the following types of parts are made from semi-coarse wool felt for oil seals:

Part type

• Semi-coarse-haired seal plate
• Ring-seal semi-coarse-haired
• Semi-coarse-haired disc seal
• Semi-coarse wool seal tape

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

Felt seals, made in the form of stuffing box rings, are used at peripheral speeds of no more than 2 m/s.

It is not recommended to use gland seals made of semi-coarse 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.

When operating the stuffing box rings in an environment that causes increased wear on the shafts, it is recommended to install protective bushings on the shaft (Fig. 1).

Rice. 1

When installed in gland seals, the rings can be doubled (Fig. 2).

Rice. 2

When operating in highly contaminated, dusty and humid environments, it is recommended to use packing felt rings in combination with groove seals, labyrinth seals or labyrinth-groove seals.

Technical requirements for mating parts. The hardness of the shaft journal under the ring is recommended to be at least 47HRC.

The runout of the shaft journal dв under the ring during rotation in bearings should be at peripheral speed:

• up to 4m/s - no more than 0.1 mm;
• St. 4m/s - no more than 0.06 mm.

When installing felt seals on shafts located vertically and in damp rooms, it is recommended to protect the seal with a shaped disc.

 

Shape and dimensions of stuffing box rings and grooves for them. Dimensions, mm

Before installing the rings, it is recommended to soak them in a heated mixture ofuniversalmedium melting grease (85%) and flake graphite (15%).

Specifications:

Name of the indicator of semi-coarse wool felt:

• Standardized humidity, % – 13
• Density, g/cm — 0.36±0.02
• Tensile strength kgf/cm2, not less than - 25
• Elongation at break, %, no more than – 140
• Mass fraction of free sulfuric acid, %, no more than – 0.8
• Mass fraction of plant impurities, %, no more than — 1.0
• Mass fraction of non-wool fibers, %, no more than -8
• Mass fraction of mineral impurities%, no more than – 0.15

Where to buy semi-coarse omental felt

The FULL SET Kharkov online store offers a full range of technical semi-coarse wool gland felt. We will help you choose the appropriate size and thickness of felt sheet needed to solve your problem. Felt with thickness from 4 to 20 mm is always available.

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

Make payment for semi-coarse wool felt for oil seals in any way convenient for you.

All methods are available to us:

Spot

Payment in cash can be made:
upon receipt of goods at the point of delivery (pickup);
upon receipt of goods at the Nova Poshta branch (cash on delivery)
Payment by card on the website

Payment by Visa, MasterCard bank cards directly on the website or using the LiqPay service.
Payment to current account

Payment by bank transfer to a bank account.

Delivery

We will also pack and ship your purchase to you using any courier service of your choice.

Happy shopping!