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PTFE PACKING

PTFE PACKING
PTFE has characteristics of excellent anticorrosion, good self-lubrication and non-sticking. However, it is also substance with low heat conductivity, cold flow and great thermal expansion coefficient. All of ASSEALS PTFE packings are designed for every applications.

CONSTRUCTION:

2300(A/B) Pure PTFE Packing (Free oil)

Made of raw film twists of pure PTFE dispersion resins without any lubrication. It is soft, mainly for static sealing. (2300P=2300 + PTFE Impregnation)
 

2300L Pure PTFE Packing with oil

Same as 2300, but treated with special lubrication, designed for dynamic.
PA 2300 and PA 2300L both are economical packing.
 

2302 Pure EPTFE Packing (Free oil)

Braided from pure 100% expanded PTFE packing. it is very flexible, low cold flow, high elasticity. It can be impregnated with PTFE on request.
 

2304 Sintered PTFE Packing 

Made of sintered, highly stretched PTFE multifilament yarns with thoroughly PTFE impregnation. The packing is then re-impregnated with a mix of PTFE mix during plaiting operation. Good resistance to compression and to extrusion, high structural and cross-sectional density.
 
APPLICATION:
2300(A/B)
2302
Designed for valves and lower shaft speed applications under medial pressure in food processing, pharmaceuticals, paper mills, fibre plants where high purity and corrosion resistance is required.
2300L
Universal, suitable for valves, pumps and agitators in most mediums.
2304
Especially suited for high pressure valves, plunger pumps, agitators, mixers etc. and where contamination is not permitted.
SERVICE LIMITS:
Style
2300(A/B)
2300L
2302
2304
Pressure
Rotating
15 bar
15 bar
15 bar
20 bar
Reciprocating
100 bar
100 bar
100 bar
150 bar
Static
150 bar
200 bar
200 bar
250 bar
Shaft speed
2 m/s
10m/s
5m/s
10m/s
Density
1.3g/cm3
1.6 g/cm3
1.3g/cm3
1.75 g/cm3
Temperature
-150~+260°C
PH range
0~14
 
FORMS OF SUPPLY:
in coils of 2 to 5 kg, other weight on request;  as precut length;
as prepressed rings----R2300,R2300L,R2302,R2304
STOCK DIMENSIONS:
Size mm
4
5
6
8
10
12
14
15
16
18
19
20
appr. m/kg
35
22
16
9.0
5.6
3.9
2.9
2.5
2.2
1.7
1.5
1.4
Appr. ft/lb
52
33
24
14
8.3
5.8
4.3
3.7
3.3
2.5
2.9
2.1
kg/coil
2
5
Above appr. Weight for type 2304.

2320A/B Graphited PTFE Packing

Braided from graphited PTFE (GPTFE) yarn. The packing is soft. There are no free particles of graphite on surface and therefore no contamination can occur.
2320A is a packing with A grade of quality.(Chinese "GFO")
2320B is economical GPTFE packing.(Chinese "GFO")
 
2320GFO is 100% GFO Packing
 

2320L Graphited PTFE Packing with oil (2320C)

Packing made of 100% GPTFE yarns, and re-impregnated with a silicone lubricant. It is also economical GPTFE packing.
 

2322 Sintered Graphited PTFE Packing 

Braided from sintered PTFE pretreated with graphite impregnation. This yarns are 100% from Leizing. The characteristics are similar to GFO, just has cross-sectional density, and some particles of graphite on surface.
 
APPLICATION:
For use in pumps, valves, reciprocating and rotating shafts, mixers and agitators. Especially designed for services involving surface speeds and temperature higher than those normally specified for pure PTFE packings. Can be safely used in all chemical pump applications with the exception of molten alkali metals, fluoride, fuming nitric acid and other strong oxidizing agents. It is also against water, steam, petroleum derivatives, vegetable oil and solvents.
 
SERVICE LIMITS:
Style
2320A
2320B
2320L
2322
Pressure
Rotating
20 bar
15 bar
15 bar
20 bar
Reciprocating
100 bar
100 bar
100 bar
150 bar
Static
150 bar
200 bar
200 bar
250 bar
Shaft speed
16 m/s
12 m/s
12 m/s
20 m/s
Density
1.4~1.6g/cm3
Temperature
-150~+280°C
PH range
0~14
 
FORMS OF SUPPLY:
 
in coils of 2 to 5 kg, other weight on request;  
as precut length;
as prepressed rings----R2320A/B,R2320L,R2322
 
STOCK DIMENSIONS:
Size mm
4
5
6
8
10
12
14
16
18
20
22
25
appr. m/kg
45
29
21
12
7.4
5.1
3.8
2.9
2.3
1.9
1.6
1.3
Appr. ft/lb
68
47
27
17
12
6.8
5.4
4.4
3.6
3.2
2.3
1.8
kg/coil
2
5
Contact Informations
Add: TAOYUAN EAST ROAD,GUANHAI WEI EAST INDUSTRIAL ZONE,CIXI,ZHEJIANG,CHINA
E-mail: Wisun@asseals.com
            aiflon@aiflonsealing.com
Web.: www.asseals.com (Global)
           www.asseals.cn (Domestic)
Tel: (+86)574 63225992
Fax: (+86)574 63225995
 
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