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SinoSeal >>English >> Products >> PTFE products >> Compound O-Ring

Compound O-Ring

PTFE (Polytetrafluoroethyene) is a fluorocarbon polymers. The chemical structure of PTFE has the hydrogen atoms of polyethylene completely displaced by fluorine atoms to form a high molecule. This is a very stable structure. That is why PTFE is a polymer that never age.

PTFE is a superior sealing material. It is clean and non-sticking, you can use it for food industry. It can work up to 260 C. It can work at PH 0-14. it can be processed into film, block or any shape. It has a low coefficient of friction and lubrication is not always necessary. PTFE can work together with other materials like fiberglass or copper to get a better mechanical property. When PTFE is expanded properly, the fiber changes from hair-like structure to a web-like structure and become much more stronger while it is much lighter.

PTFE is also a young material. Until today SinoSeal and its team has been probing into this new product and you can definitely expect progress in this field.

Compound O-Ring

[ Features ]
Compound O-Ring adopts special rubber resisting high temprature,F+ plastic and special engineering to compound this sealing product.It not only has low contraction permanent set functions of rubber O-ring,but also resist heat,cold,oil,friction,chemical corrusion and other performances.It can be used in all kind of dynamical seal and static seal widely,meanwhile can replace all traditional rubber and plastic o-ring.

[ Main properties ]
We can produce other no-nominal compound o-ring.



ltem


Unit

 

A

B

C


Normal Ckonditions


Hardness

JIS Hs

70-90

70-90

60-75

Elongation,min

%

60

60

80


Tensile Strength,min

MPa

16

16

16


Compressibility

%

50-60

50-60

60-75


Recovery

%

>85

>85

>70


Permanentset

%

<10

<10

<20


230SLSLSLá24h
hot air ageing


Change of hardness,max.

JIS Hs

-5-+5

-5-+5

-5-+5


Change of tensile strength,max.

%

-15

-15

-15


Change of elongation,max.

%

-20

-20

-20


Compression
permanentset

175°C×70h

%

≤20

≤20

≤30


Colour

 

 


brown


black


red


Applications


Temperature Limits

°C

-20-250

-20-200

-50-200


Pressure Limits

MPa

0-35


Strong caustics,moderate acids,chlorine,gases,wter,steam,hydrocarbons,hydrogen and aluminum fluoride except element fluorine and fusion sodium.

[ Specifications ]



Setion Diameter


Nominal Inside Diameter

1.80±0.10

20±0.10-300±1.60

2.60±0.10

20±0.15-300±1.60

3.55±0.10

25±0.15-300±1.60

4.00±0.10

40±0.20-300±1.60

4.60±0.10

40±0.20-300±1.60

5.00±0.10

40±0.25-400±1.80

5.30±0.13

60±0.30-400±1.80

5.50±0.13

60±0.30-400±1.80

5.70±0.13

60±0.30-400±2.00

6.00±0.13

80±0.80-400±2.00

6.30±0.14

80±0.80-400±2.00

7.00±0.14

100±0.65-1000±4.00

8.00±0.16

110±1.00-2000±4.00

10.00±0.18

200±1.50-2000±6.00

12.00±0.18

≥ l400±1.50-6.00

14.00±0.18

≥ 400±1.50-6.00

16.00±0.18

≥ 400±1.50-6.00


Compound o-rings combines the good futures of rubber and PTFE. Rubber is a elastomer but it might be unable to resist strong acid or alkalis. The PTFE jacket outside help to protect the rubber since PTFE can work at PH 0-14. It is often used under some harsh circumstances.

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