NAVAIR 01-1A-505-2
008 03
TO 00-25-255-1
Page 15
TM 1-1500-323-24-2
23. DUMMY RECEPTACLES. Dummy receptacles are
16. EMI/RFI GROUNDING TERMINATORS. Ground
provided, and shall be used to stow unmated plugs,
terminators are used to ground or shield a connector to
caps or protective covers when the related component
reduce the electromagnetic radiation and radio
is not in operational use. The dummy receptacle shall
frequency interference from other equipment. A
be marked and located to permit easy location and
physical and electrical shield is employed which is
access. See MS3115 (Figure 12, this WP).
terminated at one or both ends to a ground or some
other predetermined point with respect to ground.
24. Protective covers for plugs and receptacles MS3180
Shields can be applied to individual wires, cables,
and MS3181 are shown in Figures 13 and 14. Dust cap
bundles, or harnesses. See: MS18121, MS21980, and
AS90376 is shown in Figure 15.
MS21981 (WP 007 03).
25. GASKET FOR FLANGE MOUNT RECEPTACLE.
17. E M I / R F I
GROUNDING
TERMINATOR
Part Number 229401 gaskets are made from conductive
INSTALLATION. EMI/RFI grounding terminator
rubber, fluorosilicone, neoprene, or silicone and are
installation procedures are contained in Figure 9, this
used to seal receptacle flange to mounting structure
WP.
(Figure 16, this WP).
18. NON-ENVIRONMENTAL BACKSHELLS. A non-
26. MOUNTING NUT FOR JAM NUT RECEPTACLES.
environmental backshell is an attachment on backside
Part number MS3186 mounting nut is used to
of connector that does not provide protection to unit
mechanically mount a receptacle to a structure. See
from moisture, dirt, air or dust. See backshells: M85049/
MS3186, (WP 007 03).
34, Figure 10, this WP.
27. MOUNTING PLATES FOR FLANGE MOUNT
19. E N V I R O N M E N T A L
BACKSHELLS.
An
RECEPTACLES. Part number M85528 mounting plates
environmental backshell is a device that provides
for both series 1 and 2 receptacles are available in three
protection from moisture, dirt, air and dust which may
types: heavy duty, medium duty, and light duty. See
reduce performance of unit. They do not provide
M85049/94, M85049/95, M85049/96 (WP 007 03).
protection from nonphysical environments such as RF
and radiation. See: M85049/9, M85049/7, M85049/11
28. RUBBER BUSHINGS. Part number MS3420 bushing
(WP 007 03).
standard material and color is black neoprene. Primary
use is to provide a cushion for wires at connector exit
20. NON-ENVIRONMENTAL EMI/RFI BACKSHELLS,
to aid strain relief. See MS3420-6 and MS3420-16
A non-environmental EMI/RFI backshell is an
(WP 007 03).
attachment on the back side of a connector that does
not protect against moisture, dust, and dirt but does
29. SEALING PLUGS. Part number MS27488 plugs are
provide EMI/RFI protection. See: M85049/25, M85049/
inserted to fill a cavity in a connector insert. These
24, M85049/23, M85049/26-1 and M85049/26-2
plugs are inserted large end first. Its function is to seal
(WP 007 03).
all unoccupied apertures in insert, especially in
environmental connectors. See MS27488 (WP 007 03)
21. ENVIRONMENTAL EMI/RFI BACKSHELLS.
and Figure 17, this WP).
This type of backshell is used when moisture entry
and EMI/RFI protection is needed; Figure 11 shows
30. POTTING BOOTS. Potting is used to improve and
a typical example. See: M85049/6, M85049/8 and
protect the electrical functions of the unit. Potting acts
M85049/10 (WP 007 03).
as a dielectric and provides strain relief and protection
to unit from the environment. See MS3185 in Figure 18,
22. CONDUIT FITTINGS. Conduit fittings are used to
this WP.
connect a conduit to a connector, and may be either a
ferrule, nut, adapter, box fitting, 45 elbow, 90 elbow,
hex nut, or seal assembly. See AN3050, AN3051,
AN3052, AN3053, AN3054, AN3055, AN3056, AN3058,
AN3064, AN3060, AN3061, AN3062, AN3063, AN3068,
and AN3067, (WP 007 03).
