China Rubber Brake Hose 1/8 sae j1401 DOT SAE Hydraulic High Pressure Brake Hose manufacturers and suppliers

Rubber Brake Hose 1/8 sae j1401 DOT SAE Hydraulic High Pressure Brake Hose

What is the NBR?

Nitrile butadiene rubber (NBR), is a copolymer of acrylonitrile and butadiene monomer polymerization, mainly produced by low temperature emulsion polymerization, excellent oil resistance, high wear resistance, good heat resistance, strong adhesion. Its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance, low elasticity.

Because of its oil resistance and excellent physical and mechanical properties, NBR is widely used in the manufacture of various oil resistant like rubber products. Such as O-ring, gasket, hose and fuel tank lining rubber, printing roller, tank lining, insulating floor board, oil resistant sole, hard rubber parts, fabric coating, pipe thread protective layer, pump impeller and wire sheath, adhesive, food packaging film, rubber gloves and other fields. Abroad mainly used in aviation, automobile, printing, textile and machinery manufacturing, etc. With the development of NBR modified varieties, the application prospect of nitrile butadiene rubber is expanded. Summed up the main: manufacturing fuel tubing, grease cloth, oil seal, oil pipe, oil resistant rubber parts and oil contact with all kinds of products. Nitrile rubber is mainly used to make oil resistant products, such as oil pipe, tape, rubber film and large oil sac, often used to make all kinds of oil resistant molding products, such as O-ring, oil seal, leather bowl, diaphragm, valve, bellows, rubber hose, seals, foam, etc., also used to make rubber plate and wear-resistant parts.

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Product Detail

Product Tags

I.D (mm)	3.2
O.D (mm)	10.5
material	NBR
structure	nylon+rubber
size	1/8

Why does the rubber brake hose has nylon braided line?

Using nylon interlayer and chlorinated butyl rubber as inner and outer layer structure, can produce a new type of hose to prevent freon gas leakage, make the pipe stronger.

Rubber aging factors:

1. Oxygen: Oxygen in rubber with rubber molecules in the free radical chain reaction, molecular chain break or excessive crosslinking, resulting in the change of rubber properties.

2. Ozone: Ozone chemical activity than oxygen is much higher, more destructive, it is also to break the molecular chain, but the action of ozone on rubber with rubber deformation is different.

3. Heat: Improve the oxygen diffusion rate and activation oxidation reaction, so as to accelerate the rubber oxidation reaction rate, which is a common aging phenomenon – thermal oxygen aging.

4. Light: The shorter the light wave, the more energetic it is. It is the high energy ultraviolet that destroys rubber. In addition to directly causing the break and cross-linking of rubber molecular chains, the rubber absorbs light energy and produces free radicals, which initiates and accelerates the oxidation chain reaction process, which is called “light outer layer crack”.

5. Water: the role of water has two aspects: rubber in wet air rain or soaked in water, easy to destroy, this is due to the water-soluble substances in rubber and hydrophilic groups and other components by water extraction and dissolution, hydrolysis or absorption and other reasons. Especially under the alternating effect of water immersion and atmospheric exposure, the destruction of rubber will be accelerated. However, in some cases, water does not destroy rubber, and even has the effect of delaying aging.

7. Oil: In the use of the process of long-term contact with oil medium, oil can penetrate into the rubber to make it swell, resulting in the reduction of rubber strength and other mechanical properties. Oil can make rubber swelling, because oil into rubber, produced molecular diffusion, so that the vulcanized rubber network structure changes.