Table 24 APPROVED SUPPLIERS OF BOEING STANDARD SEALANTS (Continued)
Boeing Standard Supplier
BMS5-95 B-1/2 PRC-DeSoto International
BMS5-95 B-2 PRC-DeSoto International
BMS5-95 B-2 Le Joint Francais
BMS5-95 B-2 Yokohama Rubber
(1) Make a selection of a sealant from Table 23.
(2) With a clean cloth and naptha or an equivalent solvent, remove all contamination from:
• The connection
• The 1 inch minimum area around the connection.
(3) Let the area dry for a minimum of 15 minutes.
(4) For a lamp terminal, with or without a sleeve, apply one continuous layer of sealant with a brush
on:
• The end of the terminal
• The hardware that is attached to the lamp.
Make sure that the sealant is not applied on:
• The shank of the terminal
• A soldered filament connection.
CAUTION
ANY SEALANT ON THE SHANK CAN PREVENT THE MOTION OF THE
LAMP CONTACT. THE LAMP CAN BECOME TOO HOT WHICH CAN CAUSE
THE FAILURE OF THE LIGHT ASSEMBLY.
(5) For a switch terminal that is not connected, apply one continuous layer of sealant on the terminal
with a brush.
(6) For a switch lead wire that is not connected, assemble a crimp type end cap on the wire. Refer to
Subject 20-30-16.
(7) For all other connections, apply a layer of sealant on the connection with a brush.
Make sure that the sealant is fully applied on the outer surface of the connection.
(8) Let the sealant cure.
NOTE: The full cure of a sealant is recommended, but the sealant is serviceable when:
• It is tack free
• It is in an area where wind shear does not occur.
ELECTRICAL CONNECTION OF EQUIPMENT AND INSTALLATION OF TERMINAL LUGS
707, 727-787
STANDARD WIRING PRACTICES MANUAL
20-30-00
Page 38
Jun 15/2018D6-54446
ECCN 9E991 BOEING PROPRIETARY - See title page for details
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