Alchem Freudenberg Dichtungen FST ehemals Merkel Stuff Box Packings
Alchem Freudenberg Dichtungen FST ehemals Merkel Stuff Box Packings
Alchem Freudenberg Dichtungen FST ehemals Merkel Stuff Box Packings
Alchem Freudenberg Dichtungen FST ehemals Merkel Stuff Box Packings
Alchem Freudenberg Dichtungen FST ehemals Merkel Stuff Box Packings
Alchem Freudenberg Dichtungen FST ehemals Merkel Stuff Box Packings

Alchem

6375
Last items in stock
€449.82 tax incl.

(Price for minimal quantity of 2)

ALCHEM 6375 Universal chemical valve packings.

ALCHEM is manufactured from pure PTFE yarn with an additional PTFE impregnation, ensuring excellent chemical resistance. Its high density and tight braid structure ensure very low leakage performance. The packing has a high degree of form stability and a low compressibility which makes it also suitable for plunger pump applications.

ALCHEM ST material is approved for use in food, drinking water and oxygen applications.

Square Diameter

The minimum purchase order quantity for the product is 2.

Application Limits
P 500 bar 
250 bar *
7250 psi 
3625 psi *
T          -200..+280(C               -328..+536(F                  
V 2 m/s 400 ft/min
pH 0..14 0..14
* Installation with end rings
 
 
Media:
All chemicals including concentrated hot acids and lyes. 
 

(Exceptions: molten alkali metals, fluorine and some fluorine compounds).

Note: This packing is certified by the Fraunhofer-Institute for process engineering and packaging as suitable for use in food processing machinery according to FDA US 21 CFR 170.3 (i) and to article 3 of the EU directive 1935/2004.

 Particularly tight braid and dense structure 
  Very low leakage rates                        
 High degree of form stability and compressibility 
  Very low setting rates
 Low soluble chloride content   Suitable for nuclear applications
 White colour   No risk of colour contamination

 

Also available in dieformed rings and pre-cut lengths

mm inch G/m M/kg kg/Box Reference no  In Stock 
3 1/8 16 63.5 1 24107749  
4 28 35.7 1 24107750 *
5 3/16 44 22.9 1 24107751 *
6   63 15.9 1 24107752 *
  ¼ 72
14.0
1 24115712
8 5/16 112 8.9 2 24107753 *
3/8 159 6.3 2 24117570
10 175 5.7 2 24107754 *
12 252 4.0 3 24107755 *
½ 282 3.5 3 24107756 *
14 9/16 343 2.9 3 24116248 *
15 394 2.5 3 24116340  
16 5/8 448 2.2 3 24107757 *
18 567 1.8 3 24117869  
19 ¾ 632 1.6 3 24192581  
20 700 1.4 5 24115579 *
22 7/8 847 1.2 5 24115580  
25 1 1094 0.9 10 24121883 *

 

 
Einsatz für Ventile
ja
nein
Temp. min.

-10
-18 °C
-20 °C
-30
-40
-46 °C
-50
-60
-100
-200
107
Temp. max.
+40 °C
+50 °C
+66 °C
+70 °C
+80 °C
+121 °C
+200 °C
+260 °C
+316 °C
100
120
150
160
160
250
280
300
pH-Wert min.
pH 0
pH-Wert max.
pH 14
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