Felt for gaskets

Application

В самом названии войлока обозначено основное предназначение данного материала в машиностроении.  Данный материал предназначен для неподвижных уплотнительных устройств  — уплотняющих прокладок. Как правило, прокладки применяются для уплотнения  прилегающих поверхностей с целью герметизации.

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, felt gaskets 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.

Очень широкое применение прокладочный войлок нашел как материал, который применяют 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.

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.

Felt for gaskets, depending on the raw materials used for its manufacture, is produced in several types:

• Coarse wool felt for gaskets, grade A
• Coarse wool felt for gaskets, grade B
• Semi-coarse wool felt for gaskets, grade A
• Semi-coarse wool felt for pads, grade B
• Fine-wool felt for gaskets

Raw materials used for the production of felt for gaskets

The different properties of different types of felt are due to the different composition of the raw materials used for its production.

The composition of the raw materials used for the production of coarse wool felt for gaskets 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 sheep wool, calculated as washed – 41%
• Factory sheep wool – 7%
• Factory cow wool – 10%
• Other factory wool -5%
• Regenerated wool -25%
• Refined products from own production – 12%

The composition of the raw materials used for the production of semi-coarse wool felt for pads 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 - 43 - 38%;
• Sheepskin fur semi-fine and semi-coarse wool, combed semi-coarse tow – 20 - 10%;
• Factory cow wool – 8 – 5%;
• Recovered wool and waste products from its production in purified form - 19 - 17%

The composition of the raw materials used for the production of fine-wool felt for gaskets 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 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%.

Felt parts for gaskets

Depending on the purpose and shape, the following types of parts are made from felt for gaskets:

Part type (Part type designation)

• Fine-wool spacer ring (PrT Ring)
• Fine-wool gasket tape (PrT Tape)
• Fine-wool gasket plate (PrT plate)
• Fine-wool gasket disc (PrT disc)
• Curly fine-wool pad (FgT pad)
• Ring-spacer brand A semi-coarse wool (Ring PrAP)
• Ring-spacer brand B semi-coarse wool (Ring PrBP
• Tape-laying grade A semi-coarse wool (PrAP Tape)
• Tape-laying grade B semi-coarse wool (PrBP Tape)
• Plate-laying grade A semi-coarse wool (PrAP Plate)
• Plate-laying grade B, semi-coarse wool (PrBP Plate)
• Disc-laying grade A semi-coarse-haired (PrAP Disc)
• Disc-laying brand B semi-coarse-haired (Disk PrBP)
• Gasket brand A, figured, semi-coarse wool (AFgP Gasket)
• Gasket brand B, figured, semi-coarse wool (Gaskin BFgP)
• Ring-spacer brand A, coarse wool (Ring PrAG)
• Ring-spacer brand B coarse wool (Ring PrBG
• Tape-laying grade A, coarse wool (PrAG Tape)
• Tape-laying grade B, coarse-wool (Tape PrBG)
• Plate-laying grade A, coarse-wool (Plate PRAG)
• Plate-laying grade B, coarse-wool (Plate PrBG)
• Disc-laying grade A, coarse-wool (Disk PrAG)
• Coarse-wool disc-gasket brand B (Disk PrBG)
• Gasket brand A, figured, coarse wool ( Gasket AFgG)
• Gasket brand B figured coarse wool (Gasket BFgG)

Technical characteristics of felt for gaskets

Each type of cushioning felt has its own unique characteristics.

Indicator namecoarse felt for gaskets grade A:

• Standardized humidity, % – 13
• Density, g/cm — 0.32±0.02
• Tensile strength kgf/cm2, not less than -12
• Elongation at break, %, no more than – 150
• Mass fraction of free sulfuric acid, %, no more than – 0.65
• Mass fraction of plant impurities, %, no more than — 1.0
• Mass fraction of non-wool fibers, %, no more than -15
• Mass fraction of mineral impurities%, no more than – 0.2

 

Indicator namecoarse felt for gaskets grade B:

• Standardized humidity, % – 13
• Density, g/cm — 0.26±0.02
• Tensile strength kgf/cm2, not less than -10
• Elongation at break, %, no more than – 150
• Mass fraction of free sulfuric acid, %, no more than – 0.4
• Mass fraction of plant impurities, %, no more than — 1.0
• Mass fraction of non-wool fibers, %, no more than -15
• Mass fraction of mineral impurities%, no more than – 0.2

Indicator namesemi-coarse wool felt for gaskets, grade A:

• Standardized humidity, % – 13
• Density, g/cm — 0.34±0.02
• Tensile strength kgf/cm2, not less than -15
• Elongation at break, %, no more than – 145
• Mass fraction of free sulfuric acid, %, no more than – 0.65
• 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

Indicator namesemi-coarse wool felt for pads, grade B:

• Standardized humidity, % – 13
• Density, g/cm — 0.28±0.02
• Tensile strength kgf/cm2, not less than -12
• Elongation at break, %, no more than – 150
• Mass fraction of free sulfuric acid, %, no more than – 0.5
• 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

Indicator namefine 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

Where to buy felt for gaskets

В  интернет магазине FULL SET  г. Харьков, представлен полный ассортимент войлока для прокладок. Мы поможем подобрать Вам подходящий по размеру и толщине лист войлока,  необходимый  для решения вашей задачи. Всегда в наличии войлок в листах  грубошерстный прокладочный, полугрубошерстный прокладочный и тонкошерстный прокладочный толщиной от 3 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

Make payment for felt for gaskets 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!