O-RING

It is characterized by its excellent mechanical strength and resistance against friction/oil. But, It may be fragile to the oils that have chemical activation like ultra-pressure additive.

Urethane Rubber

U565

It is the most excellent material for resistance against weather/freon gas.

Chloroplene Rubber

M352

It is the excellent material for chemical-resistance and durability, and is characterized by allowing no gas transmission. But, don't use it for mineral oil.

Butyl Rubber

B466

It is the material that has excellent resistance against vegetable oil and hot water. But, don't use it for mineral oil.

Ethylene Propylene Rubber

E617

It has the same resistance against oil, chemical and heat as F422, and excellent for compression and twist.

Fluorine Rubber

F201

It is the excellent material especially for heat/water resistance, and suitable for cylinder and liner use.

Silicon Rubber

S637

It has almost the same oil-resistance as A305, and especially excellent for cold-resistance.

NBR

A980

It is the material that has excellent resistance against internal-fuel oil, and especially most suitable for gasoline.

NBR

A908

Other Materials

E of 4

It has better heat-resistance than NBR, and especially has excellent oil-resistance against engine oil, gear oil and torque converter(hydrotype automatic transmission).

Acryl Rubber

T302

D of 4

It is the material that can be used for wide range of application among the synthetic rubbers having the most excellent resistance against oil, chemical and heat.

Fluorine Rubber

F422

C of 4

It is the material that can be used for widest range of temperatures among the synthetic rubbers having excellent heat/cold resistance.

Silicon Rubber

S503

3

It is the material having the most resistance against animal/vegetable oil such as ethylene glycol and brake oil.

Styrofoam Rubber

R189

2

It is the material for general fuel use having excellent resistance against fuel oil such as kerosene and diesel.

NBR

A122

B of 1

Even if it has almost the same property as A305, it has stronger hardness than A305, and is the excellent material in pressure-resistance.

NBR

A105

A of 1

It is the most representative material and can be widely used thanks to its oil-resistance and heat-resistance property.

NBR

A305

Standard Material

Mark

Feature

Kind

NOK Material No.

Kind

Kinds and Features of NOK O-RING's Material


-RING is the simplest sealing device in structure/how to use. It is widely used for waterproofing of underwater camera, airplanes and cars etc.
NOK O-RING is characterized by its material, synthetic rubber, which is compounded by NOK's unique know-how, and also it is prepared with various special materials that can respond to every use conditions. In addition, it is also prepared with every standard products that display stable functions, such as ISO Standard/JIS Standard/JASO Standard/AS Standard etc.

Feature of NOK O-RING's Rubber Material
NOK is prepared with the standard materials in accordance with JIS Standard, and at the same time equipped with every special materials in order to respond to wide range of use conditions.
Its representative kinds are listed in the table. Since we are prepared with the materials for special use besides these, please ask us separate consultation, if necessary.

  • Country:South Korea
  • telephone:82-82221131070
O-RING is the simplest sealing device in structure/how to use.
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O-ring sealing tips

The O-type sealing ring is a rubber sealing ring with a circular cross-section. Because its cross-section is O-shaped, it is called an O-type rubber sealing ring, also called an O-ring. It began to appear in the mid-19th century, when it was used as a sealing element for steam ...

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The function of O-ring seal

The O-ring is an extrusion seal. The basic working principle of the extrusion seal is to rely on the elastic deformation of the seal to cause contact pressure on the sealing contact surface. If the contact pressure is greater than the internal pressure of the sealed medium, ...

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O-ring sealing form

The O-rings of horizontal slurry pumps can be divided into static seals, reciprocating seals, rotating seals and switch seals according to the relative movement state between the seal and the sealed device. According to the compression amount (tightness) of the O-ring ...

Come From Pansto Pump Co., Ltd