Circular Connector Backshells

Circular connector backshells are components of a wiring system that attach to the cable side of a circular connector in order to provide robustness and ensure its integrity. They are typically separate from the connector head itself, and secure the cable to the connector via a clamp.

Why are circular connector backshells needed?

Circular connector backshells help to protect the connector, and to safeguard the reliability of the cable and ultimately the entire system. They prevent the ingress of dirt, moisture and liquids into the connector head by providing a tight seal against the cable itself. In addition they act as an effective form of strain relief for the connector assembly, ensuring that the cable cannot be bent to an excessive angle, which could potentially damage it.

What are circular connector backshells used for?

Circular connector backshells are used to shield wire connection points of interconnecting cables and connectors. They may also be used to shield against electrical interference in a system by acting as a continuation of the cable ground sheath directly into the connector itself.


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Description Price For Use With Shell Size Body Orientation Gender Housing Material Spring Clip Size Thread Size IP Rating Length Number of Contacts Strain Relief Series
RS Stock No. 167-9742
Mfr. Part No.192900-0497
BrandITT Cannon
$18.45
Each
units
- - - - - - - - 89.8mm - - -
RS Stock No. 241-1430
Mfr. Part No.91L1-12-05-1-ZB
BrandPolamco
$54.96
Each
units
MIL-DTL-5015 Connector 12 Straight - Aluminium Alloy 1 UNEF 5/8-24 - 30mm - - 91
RS Stock No. 241-1452
Mfr. Part No.91L1-14-07-1-ZB
BrandPolamco
$61.47
Each
units
MIL-DTL-5015 Connector 14 Straight - Aluminium Alloy 1 UNEF 3/4-20 - 30mm - - 91
RS Stock No. 709-9710
Mfr. Part No.207055-1
$8.68
Each
units
- - - - - - - - 36.83mm - - -
RS Stock No. 163-8735
Mfr. Part No.8-1437723-2
$32.77
Each (In a Box of 20)
units
- 23 Straight - Plastic - PG 21 - 43mm - - -
RS Stock No. 247-7159
Mfr. Part No.8-1437723-2
$47.06
Each
units
- 23 Straight - Plastic - PG 21 - 43mm - - -
RS Stock No. 175-3935
Mfr. Part No.CL103021
$16.54
Each
units
- - - - - - - - - - - -
RS Stock No. 226-2424
Mfr. Part No.CL124021
$28.78
Each
units
- - - - - - - - - - - -
RS Stock No. 912-0712
Mfr. Part No.UT016JCSL
$40.04
Each
units
UT0-UT0W Series Circular Connector 16 Straight - Zinc Alloy - 15/16 in - 20 IP68 68.5mm - Yes UT0
RS Stock No. 219-9865
Mfr. Part No.8403PEF21
$296.90
Each
units
840 series 3 Straight - Aluminium - PG21 IP65 - - - 840
RS Stock No. 689-8828
Mfr. Part No.BK4SRL10059XY
$55.90
Each
units
MIL-C 38999 Connector 11 Straight - Zinc Plated Aluminium - - - 31.75mm - - BK4
RS Stock No. 265-9783
Mfr. Part No.192993-0082
BrandITT Cannon
$25.22
Each
units
Unsealed plugs and Receptables 12 Straight Male Aluminium - - IP67 88.5mm 8 - -
RS Stock No. 912-0633
Mfr. Part No.UT0S12JCSL
$30.89
Each
units
UT0 Series Connectors 12 Straight - Zinc Alloy - 11/16 in - 24 IP68 61.5mm - Yes UT0
RS Stock No. 425-838
Mfr. Part No.2428-011-2405
BrandDeutsch
$4.29
Each
units
HDP20 Series 24 Right Angle - Thermoplastic - - IP67 - - Yes L017
RS Stock No. 503-669
Mfr. Part No.C016G11043E10V
$28.99
1 Bag of 5
Bag(s)
- - Straight - Polymer 1 - - - - Yes Eco-Mate
RS Stock No. 247-7143
Mfr. Part No.7-1437723-9
$63.73
Each
units
- 23 Straight - Plastic - - - 43mm - - -
RS Stock No. 873-1812
Mfr. Part No.97-3057-1007-1(621)
$33.93
Each
units
Jacketed Cable, Wires Protected by Tubing 12SL, 14, 14S Straight - - - 3/4 in - 20 - - - - 97
RS Stock No. 190-3915
Mfr. Part No.2428-011-2405
BrandDeutsch
$3.42
Each (In a Box of 100)
units
HDP20 Series 24 Right Angle - Thermoplastic - - IP67 - - Yes L017
RS Stock No. 241-1323
Mfr. Part No.91D1-14-08-1-ZB
BrandPolamco
$110.40
Each
units
MIL-DTL-26482 Series I, PATT 105, PATT 603 14 Straight - Aluminium Alloy 2 UNEF 13/16-20 - 34mm - - 91
RS Stock No. 752-5691
Mfr. Part No.058-8578-101
BrandITT Cannon
$4.46
Each
units
APD Series - Right Angle - PBT - - IP67, IP69K - - - 058