Rubber

EPDM

EPDM (ethylene propylene diene tripolymer) – rubber crosslinked in the process of peroxide or sulphur vulcanization. vulcanization crosslinked rubber in the curing process, the peroxide or sulfur. It has a good capacity for reversible deformation under the influence of mechanical forces. Rubber is resistant to weather conditions such as ozone, water (hot and cold), light acids and bases, high temperatures (up to +130 ° C) and is still flexible at -50 ° C.
Rubber is also resistant to detergents, soap and washing agents solutions and glycol-based brake fluids. It is not resistant to lubricants and mineral oils, aliphatic, aromatic and chlorinated hydrocarbons. 40 ° - 90 ° Shore hardness may be obtained depending on fillers and additives selection. Thanks to its properties it has become the most widely used material in the rubber industry. It is used extensively in the automobile industry (shock absorbers, inner tubes, tires, door seals, fenders), the construction industry (roofing seals, gaskets in gutters, door bumpers, window and door seals, hydraulic hoses, cable gaskets, sewer gaskets), household appliances production (washing machine hose gaskets, water heaters, etc.) and everywhere else where rubber’s resistance to weather conditions is required.

 

 

SBR

SBR - styrene-butadiene rubber is a copolymer of butadiene and styrene. It has elastic properties similar to those of natural rubber. It is characterized by increased resistance to weather conditions, inter alia ozone, water and heat. It is resistant to alcohols, acids and inorganic bases. It is, however, not resistant to lubricants and mineral oils, gasoline and aliphatic and aromatic and chlorinated hydrocarbons. SBR is widely used in the production of various types of seals and gaskets in automobile industry (gasket brake system parts, windscreen washer fluid seals, engine cooling system gaskets, tires) as well as in the footwear industry (shoe soles).

 

 

NBR

NBR (Nitrile) – Very popular type of rubber commonly known as oil-resistant rubber. NBR is a copolymer of butadiene and acrylonitrile and its percentage composition is the very factor that determines resistance to oil and low temperatures. Depending on the mixture selection, it can be used in temperatures between -30 ° C and 100 ° C. Nitrile rubber is resistant to engine oils, fuel oils, transformer oils, lubricants, hydraulic fluids, aliphatic hydrocarbons, propane, butane, gasoline, alcohol, saline, dilute acids and bases in low temperatures, water up to 60 ° C. It works great at high pressures. This type of rubber has low resistance to silicone oils and lubricatns, glycol-based brake fluid, a HFD fluids, concentrated acids and lyes, aromatic and chlorinated hydrocarbons, (benzene, tri), esters. NBR is widely used in hydraulics and pneumatics (gaskets, O-rings, O-ring seals type "UN", "A", "AO", "Z", "U1" and "U2", mixtures) and everywhere else where rubber is compressed and works under high pressures generated by lubricants and oils. It is used in fuel and oil hoses production.

 

 

HNBR

HNBR (hydrogenated nitrile rubber) – Acrylonitrile rubber is a copolimer of acrylonitrile and butadiene where double bonds within nitrile s butadiene segments are either full or partial. Peroxide crosslinking increases the heat and oxidation stability. Rubber products manufactured in this way are characterized by high mechanical strength and have a improved abrasion resistance. HNBR rubber exhibits increased resistance to media compared to NBR rubber. Depending on the mixture selection, its heat resistance ranges between -30 ° C and 150 ° C. HNBR rubber is resistant to vegetable and animal fats (short-term at up to 170 ° C), ozone, diesel fuel, aliphatic carbohydrates such as gasoline, propane-butane, hydraulic fluids based on mineral oils, dilute acids, bases and salts (even at elevated temperature), acid gases and mixtures of glycol and water up to 150 ° C. Rubber is not resistant to water, oils and lubricants with anti-corrosion pads and fuel with a high content of aromatics (gasoline, alcohol blends) ketones, esters, ethers, etc. HNBR rubber is used for the production of rubber sealing O-rings, type "O" as well as "UN" type rings.

 

 

BR

BR - butadiene polymer based rubber. This rubber is characterised by high flexibility, abrasion resistance, and the light. Depending on the mixture selection, its heat resistance ranges between -60 ° C and 100 ° C. It presents very good properties at both low and high temperatures. BR rubber is very rare in its pure form, it is used to make NR and SBR that are used to manufacture tapes, wedge belts, inner tubes and tires. This rubber is resistant to alcohols, water, bases and dilute acids, yet it is not resistant to hydrocarbons.

 

 

CR

CR- Chloroprene rubber. Vulcanized chloroprene is characterized by high resistance to weather aging, ozone, chemical factors and flame. CR rubber is resistant to oils and engine lubricants, ozone, freon, water and steam, alcohols, salt solutions, dilute acids and bases and glycols. It is moderately resistant to oils and greases. CR rubber is not resistant to fuel oils, esters, amines, aromatic chlorinated hydrocarbons and ketones. This rubber is used in production of membrane products, central heating furnace accessories and seals for unusual applications. Depending on the mixture selection of CR rubber, its heat resistance ranges from -40 ° C to 110 ° C.