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. 206-7543
Mfr. Part No.M85049/38S15N
TWD509.00
Each
units
38999 III 15 Straight - Aluminium Alloy - - - - - Yes MIL
RS Stock No. 206-7568
Mfr. Part No.M85049/69-17A
TWD408.00
Each
units
38999 III 17 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 206-7545
Mfr. Part No.M85049/38S17N
TWD526.00
Each
units
38999 III 17 Straight - Aluminium Alloy - - - - - Yes MIL
RS Stock No. 206-7569
Mfr. Part No.M85049/69-17N
TWD414.00
Each
units
38999 III 17 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 198-7514
Mfr. Part No.BK4SRL22169SN-B1
TWD3,021.00
Each
units
38999 III 22 Straight Female Aluminium Alloy - - - - - No BK4
RS Stock No. 206-7546
Mfr. Part No.M85049/38S19N
TWD637.00
Each
units
38999 III 19 Straight - Aluminium Alloy - - - - - Yes MIL
RS Stock No. 206-7549
Mfr. Part No.M85049/38S25N
TWD761.00
Each
units
38999 III 25 Straight - Aluminium Alloy - - - - - Yes MIL
RS Stock No. 206-7555
Mfr. Part No.M85049/69-11A
TWD361.00
Each
units
38999 III 11 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 206-7570
Mfr. Part No.M85049/69-17W
TWD448.00
Each
units
38999 III 17 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 206-7578
Mfr. Part No.M85049/69-21W
TWD487.00
Each
units
38999 III 21 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 206-7556
Mfr. Part No.M85049/69-11N
TWD361.00
Each
units
38999 III 11 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 206-7579
Mfr. Part No.M85049/69-21Z
TWD647.00
Each
units
38999 III 21 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 206-7609
Mfr. Part No.M85049/88-21W03
TWD1,512.00
Each
units
38999 III 21 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 198-7515
Mfr. Part No.BK4SRL22169SY
TWD2,175.00
Each
units
38999 III 22 Straight Female Aluminium Alloy - - - - - No BK4
RS Stock No. 689-8853
Mfr. Part No.BK4ARL08049XY
TWD1,252.00
Each
units
MIL-C 38999 Connector 9 Right Angle - Zinc Plated Aluminium - - - 21.33mm - - BK4
RS Stock No. 206-7565
Mfr. Part No.M85049/69-15W
TWD431.00
Each
units
38999 III 15 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 206-7553
Mfr. Part No.M85049/69-09W
TWD388.00
Each
units
38999 III 9 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 206-7547
Mfr. Part No.M85049/38S21N
TWD660.00
Each
units
38999 III 21 Straight - Aluminium Alloy - - - - - Yes MIL
RS Stock No. 206-7551
Mfr. Part No.M85049/69-09A
TWD352.00
Each
units
38999 III 9 Straight - Aluminium Alloy - - - - - No MIL
RS Stock No. 198-7522
Mfr. Part No.BK4SRL24179SZN-B1
TWD2,940.00
Each
units
38999 III 24 Straight Female Aluminium Alloy - - - - - No BK4