7-8905 Datasheet, PDF (32/45 Pages) Amphenol Corporation – Amphenol 97 Series Standard Cylindrical Connector

97 series
special purpose connectors
Potting (438 Construction)
Potting constructions actually exceed the Type “E” requirements of
military specifications for moisture-proof connectors. These con-
structions replace the back shell completely with a lightweight
threaded retainer ring permanently staked to the shell.
To seal the back of the connector, potting compound is injected into
an expendable polyethylene potting form and allowed to cure or
set. When the form is removed, the resilient hemispherical shaped
insulation extends well into the connector. It forms a chemical bond
to the inner and outer walls of the plug, to the back of the insert,
around the soldered connections and well out along the leads.
Not only is the back shell eliminated, but also the cable clamp. The
solder joints are completely and individually protected by the resil-
ient mass which surrounds them and resists transmittal of vibration
to the soldered connections. The completed assembly is not only
moisture-proof, but also pressurized and resistant to salt water, air-
craft lubricating oil and jet fuels.
Expendable Potting Forms
For companies not using their own potting molds, expendable poly-
ethylene forms can be provided. These expendable forms need no
treatment before use. Though designed to be discarded, they can
be left on assemblies after potting. Nylon potting forms to be left
permanently on the assembly are also available. These forms are
supplied with construction (824) and (871).
How to Order
To order connectors in constructions for potting, use the standard
MS nomenclature (MS3100A, MS3101A, and MS3106A construc-
tions are available), but substitute “97” for “MS”, drop the “A” suffix
for type of back shell, and add the application deviation (XXX) as
shown on the chart. Example: 97-3106-28-16S (438).
Deviation
438
541
824
826
871
Explanation
Modified “MS”, for potting where back shell is replaced
by threaded retainer ring. A type “W” washer is included
under 3106 coupling ring. (Boot is not included).
Consists of (438) construction with 9755-255-XX
expendable poly potting form, and type “W” washer.
Connectors are marked “97-310X-XX-XX(541).”
Consists of (438) construction plus nylon potting form
and type “W” washer; bagged, marked MS25183.
Consists of (517) construction plus nylon potting form
and type “W” washer; marked MS25183A.
Consists of (438) construction with 9755-271-XX nylon
potting form, and type “W” washer; bagged. Connectors
are marked “97-310X-XX-XX(871).”
Shell Styles
3100
3101
3106
3107
3100
3101
3106
3107
3106
3106
3100
3101
3106
3107
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