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Technical area

Principal table of the compounds

In we have illustrated in detail (see link in table) some of the compounds that are most commonly used in the production of O-Rings specifying their availability by grades of hardness and most common use.

1-2-3-4-5 

Base elastomer(coding
DIN/ISO 1629)

Code

Standard step hardness of 5°shore

Colour

Other
colour

Principal
characteristics

Standard used

Type
Approved

Acrylo-nitrile
butadiene(NBR)

ME0007

40, 45, 50, 55, 6065
70, 75, 80, 85, 90

Black

No

Very high nitrile, petrol resistant

Compound for use in contact with oils (even aggressive ones), diesel and unleaded petrol fuels. Scarce resistance to low temperatures.

 
Acrylo-nitrile
butadiene
(NBR)

ME0015

40, 45, 50, 55, 60, 65, 70, 75, 80

Black

No

High elasticity

Compound for use in systems where an above standard spring-back is required combined with an excellent Compression Set. Ideal for automatically assembled gaskets and O-Rings. Normal resistance to temperature and oils.

 

Acrylo-nitrile
butadiene(NBR)

ME0020

40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90

Black

No

Very low nitrile
content. Resistant to low temperatures.

Compound for use at low and very low temperatures. Modest resistance to some oils and fuels.

 

Acrylo-nitrile
butadiene(NBR)

ME0025

40, 45, 50, 55, 60, 65, 70

Black

No

Tear resistant, wear resistant

Compound with exceptional elasticity as well as a very high resistance to tearing and fatigue. Ideal for membranes. Also suitable for use in contact with anticryptogramic and herbicide products.

 

Acrylo-nitrile
butadiene(NBR)

ME0035

40, 45, 50, 55, 60, 65, 70

Black

No

Low nitrile content.

For use where good resistance to low temperatures is necessary combined with excellent physical and mechanical characteristics.

 

Acrylo-nitrile
butadiene(NBR)

ME0055

40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90

Black

No

Resistant to ozone and light

For use where excellent resistance to ozone and the deteriorating effect of light is required. Excellent resistance to saline mist.

 

Acrylo-nitrile
butadiene(NBR)

ME0069

40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90

Black

No

Eco

Standard economical compound with physical and chemical characteristics similar to compound ME0070.

 

Acrylo-nitrile
butadiene(NBR)

ME0070

30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95

Black

No

Standard, gas resistant.

Standard compound with certified ingredients. Excellent mechanical characteristics and good resistance to temperature. Excellent compatibility with many fluids, oils and gases. Ideal for dynamic applications on pneumatic and hydraulic apparatus.

EN549 CIRC102M.S.
D.M.21/3/73

Acrylo-nitrile
butadiene(NBR)

ME0072

40, 45, 50B, 55, 60B, 65, 70B, 75, 80, 85, 90

White

Yes

Coloured

Non toxic compound suitable for colouring. Possibility to produce almost all Ral and Pantone colours as well as specimen colours. Lesser mechanical characteristics with respect to the base compound.

 

Acrylo-nitrile
butadiene(NBR)

ME0073

40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90

Black

No

Anti abrasion

Compound containing molybdenum bisulphide that considerably diminishes the coefficient of friction. Suitable for use in the presence of moving parts and where it is necessary to reduce friction.

 

Acrylo-nitrile
butadiene(NBR)

ME0075

40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90

Black

No

High nitrile content.

Compound for use when good resistance to oils and fuels in general is required. Good resistance to high temperatures. Excellent physical and mechanical characteristics.

 

Acrylo-nitrile
butadiene(NBR)

ME0081

40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90

Black

No

Perox

Compound with peroxide acceleration. Exceptional spring-back and Compression Set. To use when it is necessary to guarantee a constant quality over time and very high efficiency.

 

Acrylo-nitrile
butadiene(NBR)

ME0090

50, 55, 60, 65, 70, 75, 80, 85, 90

Yellow

Yes

Perox

Coloured compound with peroxide acceleration. The peroxide acceleration makes up extremely well for the decay of the characteristics typical of coloured compounds.

 

Acrylo-nitrile
butadiene(NBR)

ME0995

40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90

Black

No

For drinking water.

Compound with excellent mechanical characteristics and a good Compression Set. Suitable for use in contact with hot and cold drinking water.

WRC-WRAS, ACS

Acrylo-nitrile
butadiene(NBR)

ME0996

40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90

Black

No

For drinking water.

Compound with very good mechanical characteristics and an excellent Compression Set. Suitable for use in contact with hot and cold drinking water according to all major world standards.

WRC-WRAS, ACS,
NSF61,
DVGW-W270, DVGWKTW

 



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