High Quality Rubber O Ring For Sealing

High Quality Rubber O Ring For Sealing

1.General Introduction of Rubber Ring

O-Rings are used in sanitary pipeline systems for the Auto, Food, Dairy, Beverage, Pharmaceutical pump, railcars, truck, washing machine, instrument and meter, mine equipment, pipeline, household appliances, automobile, steamboat, industrial electrical equipment, building door& window, construction machinery, construction bridges and tunnel. Rubber material : EPDM, NBR, FKM Fluoroelastomer, Buna-N, PTFE, Silicone and so on.

2.Product Description

3. Rubber's Feature:

NBR Rubber Features:

Nitrile rubber (NBR, Buna-N) provides excellent resistance to petroleum oils as well as mineral and vegetable oil. Nitrile rubber also offers strong resistance to heat aging - often a key advantage over natural rubber.

Nitrile rubber performs well in carburetor and fuel pump diaphragms, aircraft hoses, seals and gaskets as well as oil-lined tubing. Due to its versatility, nitrile is used in applications involving not only oil and fuel resistance, but those applications requiring resistance to heat, abrasion, water, and gas permeability.

Silicon Rubber Features:

Silicone rubber offers great resistance in extreme temperatures, being able to operate normally from -100°C to +250°C (-150°F to +480°F). At extreme temperatures, the tensile strength, elongation, tear strength and compression set can be far superior to conventional rubbers. This makes it one of the materials of choice in many extreme environments.

Caution: Generally, silicones are attacked by most concentrated solvents, oils, acids and dilute sodium hydroxide.

FKM Rubber Features:

Viton belongs to the Fluoroelastomers (FKM/FPM) group of rubber compounds. There are many grades and hardness variations to solve most applications with various formulations to meet specific requirements of temperature and chemical resistance. Typical uses include:excellent heat resistance,good mechanical properties,good compression set resistance,resistance to wide range of oils and fuels,resistance to solvents; especially all aliphatic, aromatic and halogenated hydrocarbons and acids.

EPDM Rubber Features:

EPDM rubber is a high density rubber primarily used for outdoor applications. It has dynamic and mechanical properties between natural rubber and synthetic rubber.

Do not use EPDM if continual contact with petroleum based products is required.

Not recommended for usage in food applications or those that are exposed to aromatic hydrocarbons.

HNBR Rubber Features:

Hydrogenated Nitrile Butadiene Rubber (HNBR), also known as Highly SaturatedNitrile (HSN), is special class of nitrile rubber (NBR) that has been hydrogenated to increase saturation of the butadiene segment of the carbon polymer backbone. Subsequent improvements to the material properties, over that of a nitrile rubber (NBR), include greater thermal stability, broader chemical resistance, and greater tensile strength.

HNBR is classified by ASTM as a DH-type polymer. This classification indicates 150ºC service temperature as well as less than 30% swell in IRM 903 oil. HNBR can be formulated to meet application temperatures ranging between -50°C and 165ºC.

Natural Rubber Features:

Natural rubber was originally derived from latex found in the sap of rubber trees. The purified form of natural rubber can also be produced synthetically. Natural rubber is an ideal polymer for dynamic or static engineering applications.

4.Note:

Avoid to damage the O-ring during installation, because this will cause leakage. Pay attention to the following:

• The O-ring must not be expanded to its elongation Maximum.
• Edges must be burr-free, angles and radii applied smoothly.
• Dust, dirt, metal chips and other particles must be removed.
• A suitable grease to be applied to the assembly surfaces and O-rings.

Elastomer materials are made smoother if they are heated in oil or hot water to approx. 80 °C.