|Apiezon Waxes Technical Data||Wax W40||Wax W100||Wax W||Compound Q|
|Approximate softening point, degrees C||45||55||85||45|
|Temperature for application, degrees C||90||110||130||Ambient|
|Maximum temperature for use, degrees C||40||50||80||30|
|Specific gravity at 20 deg.C/15.5 deg.C||1.017||1.567||1.055|
|Specific gravity at 30 deg.C/15.5 deg.C||1.010||1.561||1.048|
|Average molecular weight||1140||1160||1214|
|Coefficient of expansion per deg.C over 20 deg.C-20 degC||0.00063||-||0.00062|
|Thermal conductivity Btu. in/ft2h degrees F||1.23||1.18||1.31|
|w/m degrees C||0.177||0.170||0.189|
|Specific heat at 25 degrees C, cal/g||0.51||0.70||0.43|
|Volume resistivity, ohm/cms||5.055x1015||1.64x1015||6.31x1015|
High 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 degrees to 90 degrees C to relatively soft Wax W40, softening at about 40 degrees C. Wax W would be chosen for sealing most joints. A softer 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 degrees to 50 degrees C, it cannot be used for apparatus likely to warm up above about 30 degrees C. Estimated vapor pressure is 7 x 10-8 torr at 20 degrees C.
Apiezon Wax W100
This wax is softer than Wax W and softens between 50 degrees to 60 degrees C. It 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 degrees C. Estimated vapor pressure is 6 x 10-9 torr at 20 degrees C.
Apiezon Wax W
The highest melting of three waxes, Apiezon Wax W softens between 80 degrees to 90 degrees C and is particularly suitable for sealing joints which may become warm in operation. Wax W should be heated to about 100 degrees C for ease of application. Estimated vapor pressure is 6 x 10-9 at 20 degrees 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 degrees 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. A further 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 molding by hand and can be readily removed when required.
Removal of Greases / Waxes
Apiezon Greases and Waxes can be removed by the following hydrocarbon solvents:
* Mineral Spirits * Trichloroethylene * Kerosene * Toluene * Xylene
Apiezon Products: Health and Safety
Apiezon products have been widely and safely used in vacuum distillation apparatus in both industry and laboratories for a number of years. As a result they should not present a health hazard assuming normal standards 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 knowledge, true and accurate. Since the conditions of use are beyond our control, 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.
|APW40||Apiezon W40 Wax, 250g. can||1||0[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.||$131.00|
|APW100||Apiezon W100 Wax, 250g. can||1||0[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.||$139.00|
|APW||Apiezon W Wax, 500g sticks||1||1||$132.00|
|APQ||Apiezon sealing cmpd. Q, 1000g. can.||1||0[*L]Standard lead-time for out-of-stock items is approximately two weeks depending on the item.||$132.00|
|[*L] Standard lead-time for out-of-stock items is approximately two weeks depending on the item.|
|Ordering information. International (non-US) prices available through your local dealer.|
|SIS Catalog Cross Reference|
|Page #||Part Numbers|
|F22 - ApiezonĀ™ Waxes||APQ, APW, APW100, APW40|
Yttria coated filament at start
Yttria coated filament after 16,000 cycles