TO 35-1-3 - Robins Air Force Base
TO 35-1-3 - Robins Air Force Base
TO 35-1-3 - Robins Air Force Base
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<strong>TO</strong> <strong>35</strong>-1-3<br />
Conventional <strong>Air</strong>less<br />
78, 765, 704 <strong>Air</strong> cap with E<br />
or EX needle and tip. De<br />
Vilbiss MBC-510 Gun or<br />
the equivalent in Binks<br />
<strong>Air</strong>less<br />
0.017-inch tip at 1,700 lbs<br />
6.6.6 High Temperature Resistant Silicone Coating<br />
Thurmalox 270-18. Instructions for applying Thurmalox<br />
270-18 are as follows:<br />
NOTE<br />
Thurmalox 270-18 shall be used as a topcoat for<br />
MIL-PRF-23236, Type I.<br />
6.6.4.4 Briner 2986 will not cure without <strong>35</strong>0 - 400 °F for 1<br />
hour. The coating will not cure during normal operation of the<br />
suppressor.<br />
6.6.4.5 Two coats at 1.5 mils each of dry film are recommended.<br />
A dry film of 1.5 mils will require a 4.5 mil wet film<br />
thickness.<br />
6.6.5 High Temperature Resistant Silicone Coating -<br />
Briner 4765. Briner 4765 is a two component, gray, high<br />
temperature resistant silicone coating.<br />
6.6.5.1 The zinc powder must be mixed into the SE before<br />
using.<br />
6.6.5.2 Thinning should not be necessary but Briner 4765<br />
can be thinned with Briner 70 silicone reducer.<br />
6.6.5.3 Apply Briner 4765 by conventional spray. De Vilbiss<br />
MBC-510 Gun, 704 <strong>Air</strong> cap, an E needle and tip or the equivalent<br />
in Binks.<br />
6.6.5.4 Drying time is one hour (dust free). Curing with topcoat<br />
applied can be accomplished by normal operation of the<br />
suppressor.<br />
6.6.5.5 Apply one coat of Briner 4765 with a dry film thickness<br />
of 2.5 mils; this will require a wet film thickness of 5.0<br />
mils.<br />
6.6.6.1 Thurmalox 270-18 is low-sheen green, one-component,<br />
heat resistant coating of silicone resin.<br />
6.6.6.2 Mix to a uniform consistency by ordinary stirring.<br />
6.6.6.3 Thinning can be accomplished using Thurmalox 295<br />
thinner. Do not use more than 1 1/2 pints per gallon.<br />
6.6.6.4 Apply Thurmalox 270-18 by airless, conventional, or<br />
electro-static spray equipment. The following equipment is<br />
recommended by the manufacturer as a guide:<br />
Spray gun<br />
<strong>Air</strong> hose<br />
*Fluid hose<br />
<strong>Air</strong> cap 704<br />
DeVilbiss P-MBC or JGA<br />
5/16" (I.D.)<br />
3/8" (I.D.)<br />
Fluid nozzle FX (0.042")<br />
Pot pressure<br />
Atomizing pressure<br />
Needle adjustment<br />
Distance from work<br />
15 - 20 lbs<br />
40 - 45 lbs<br />
Half open<br />
8 - 10 in<br />
* Smaller hose diameters, or hose lengths greater than<br />
25 feet, may make it necessary to increase pressures.<br />
6.6.6.5 Drying time at 77 °F, set to touch, is 30 minutes.<br />
6.6.6.6 Dry film thickness should be 1.0 mil.<br />
6-3/(6-4 blank)