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Apiezon
®
Waxes
F22
Scientific Instrument Services, Inc.
™
Phone: 908-788-5550
www.sisweb.com/catalog/08/F22
Apiezon Waxes Technical Data
Wax W40
Wax W100
Wax W
Compound Q
Approximate softening point,°C
45
55
85
45
Temperature for application,°C
45-50
80
100
Ambient
Maximum temperature for use, °C
40
50
80
30
Specific gravity at 20°C/15.5°C
1.017
1.567
1.055
Specific gravity at 30°C/15.5°C
1.010
1.561
1.048
Average molecular weight
1140
1160
1214
Coefficient of expansion per °C over 20°C - 20°C
0.00063
-
0.00062
Thermal conductivity Btu. in/ft
2
h °F
1.23
1.18
1.31
w/m °C
0.177
0.170
0.189
Specific heat at 25°C, cal/g
0.51
0.70
0.43
Joule/g
2.1
2.9
1.8
Loss tangent
0.015
0.016
0.015
Permittivity
2.9
2.7
2.8
Volume resistivity, ohm/cms
5.055x10
15
1.64x10
15
6.31x10
15
H
igh vacuum joints of a more permanent nature, not
required to be movable, are best sealed with one of
the Apiezon waxes rather than a grease. Three
grades of wax are available, all basically similar, but differing in
their hardness and softening points, from hard Wax W, softening
at 80° to 90° C to relatively soft Wax W40, softening at about
40°C. Wax W would be chosen for sealing most joints. Asofter
grade is used where the lower softening point makes application
easier or where the softer wax is desirable because of probable
vibration of the joint.
Apiezon Wax W40
Softer than W and W100, Wax W40 was developed for
applications where it is required to flow the sealing medium into
or around a joint, but, at the same time, the temperature of the
apparatus must be kept as low as possible and hence a harder
wax cannot be used. Occasions for such a wax arise where the
glass of the apparatus is liable to crack if heated.
Since Wax W40 is designed to flow at temperatures of 40° to
50°C, it cannot be used for apparatus likely to warm up above
about 30°C. Estimated vapor pressure is 7 x 10
-8
torr at 20° C.
Apiezon Wax W100
This wax is softer than Wax W and softens between 50° to
60°C. lt is used where a wax seal is needed, but where the
softer wax will reduce the danger of a joint cracking if the parts
are subject to vibration. The safe working temperature for Wax
W100 is obviously lower than for Wax W and is about 50°C.
Estimated vapor pressure is 6 x 10
-9
torr at 20°C.
Apiezon Wax W
The highest melting of three waxes, Apiezon Wax W softens
between 80° to 90°C and is particularly suitable for sealing’ joints
which may become warm in operation. Wax W should be heated
to about 100° C for ease of application. Estimated vapor pressure
is 6 x 10
-9
at 20°C.
Sealing Compound Q
Sealing Compound Q is a putty-like substance. It is a
relatively low cost, extremely versatile sealing medium used for a
great many purposes in vacuum work where not too low a vapor
pressure is required (vapor pressure at 20°C is approximately
1 x 10
-4
torr). Thus Compound Q is used to seal joints and fill
holes and gaps on the rotary pump side of the system. It is
suitable for sealing around the edges of flat unground joints as in
testing operations where it is necessary to blank off a part of the
apparatus temporarily. Afurther example of its use is in sealing glass
cylinders to metal plates, as is often done to produce temporary
vacuum enclosures. Sealing Compound Q is sufficiently firm at room
temperature to remain in position, yet is sufficiently soft to allow ease
of moulding by hand and can be readily removed when required.
Removal of Greases / Waxes
Apiezon Greases and Waxes can be removed by the following hydrocar-
bon solvents:
•
Carbon Disulphide
•
Mineral Spirits
•
Benzene
•
Carbon Tetrachloride
•
Trichloroethylene
•
Kerosene • Toluene
•
Xylene
Apiezon Products: Health and Safety
Apiezon products have been widely and safely used in vacuum distilla-
tion apparatus in both industry and laboratories for a number of years. As
a result they should not present a health hazard assuming normal stan-
dards of industrial hygiene are followed in their handling.
All Apiezon products are based on petroleum products of a low order of
acute toxicity, however, certain individuals develop a rash after repeated
contact. Therefore, we recommend gloves be worn to handle Apiezon. If
Apiezon material is inadvertently in contact with the skin, wipe the area
carefully then cleanse thoroughly using a mild soap.
Should any Apiezon products be heated for application, vent the fumes
and avoid breathing the warm vapors.
In terms of explosion and fire, Apiezon products are considered non-
hazardous.
The information contained in this publication is, to the best of our knowl-
edge, true and accurate. Since the conditions of use are beyond our con-
trol, no warranty is given or is to be implied with respect to
recommendations or suggestions which may be made or that any use will
not infringe upon any patent.
Part No.
Description
Price each.
AP-W40 Part #APW40--Click to order
Current Price: $131.00
Unit of Measure: EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Apiezon W40 Wax, 250g. can
AP-W100 Part #APW100--Click to order
Current Price: $139.00
Unit of Measure: EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Apiezon W100 Wax, 250g. can
AP-W Part #APW--Click to order
Current Price: $132.00
Unit of Measure: EA
Est. Ship Weight=1 lbs
Quantity in Stock=1
Apiezon W Wax, 500g sticks
AP-Q Part #APQ--Click to order
Current Price: $132.00
Unit of Measure: EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Apiezon sealing cmpd. Q, 1 kg can
Related information may be found on the following pages of our web site:
PageParts
Apiezon Waxes, pg F19APQ, APW100, APW40, APW
Apiezon WaxesAPQ, APW100, APW40, APW
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