Backshell Solutions
For sealed and unsealed systems, TE’s backshells provide protection and strain relief at cable termination and offer a geometry designed for secure installation of heat-shrinkable molded parts.
A range of options for sealed systems. TE backshell adapters fit a wide range of circular connectors and are available in a variety of materials and finishes with options to meet your needs, including low-profile fixed adapters for when future access is not required, spin-coupling adapters that enable in-service repair, and KTKK assemblies that combine environmental sealing and mechanical protection in one easy installation step.
Variable angle backshell enables straight, 45 and 90 degree cable terminations with the same part.
Solid Adapters (Fixed)
Solid adapters are designed for use where no access is required. For example, when potting is necessary or a lower space profile is needed. These adapaters have a boot groove to accomodate a lipped heat-shrinkable boot. Repair cannot be made without removing the boot.
| Connector Code | Part Description | Connector Mil Specification |
|---|---|---|
| 18 | 218M5 | AS50151(AS31001) |
| 21 | 203M6 | MIL-DTL-26482 Series 1 |
| 40 | 209M3 | MIL-DTL-38999 Series III and IV |
| 41 | 202M1 | MIL-DTL-38999 Series 1 and II |
| 54 | 201M9 | AS50151 (AS34001), MIL-DTL-26482 Series 2, MIL-DTL-83723 Series I and III, AS81703 Series III |
Spin-Coupling Adapters
Spin-coupling adapters are two-part components that have a rotatable coupling nut and a grooved body designed to accommodate lipped-type heat-shrinkable boots.
Spin-couplings with an appropriate molded part are used for environmental protection and strain relief of unscreened cable terminations. Cable repairs can be made without damaging the boot.
| Connector Code | Part Description | Connector Mil Specification |
|---|---|---|
| 18 | 218M6 | AS50151(AS31001) |
| 21 | 203M9 | MIL-DTL-26482 Series 1 |
| 40 | 209M4 | MIL-DTL-38999 Series III and IV |
| 41 | 202M2 | MIL-DTL-38999 Series 1 and II |
| 54 | 201M1 | AS50151 (AS34001), MIL-DTL-26482 Series 2, MIL-DTL-83723 Series I and III, AS81703 Series III |
Raychem Spin Lock Variable Angle Backshell
The Raychem spin lock variable angle backshell enables straight, 45o and 90o cable terminations with the same part. The connector backshell swivelling body rotates around the axis of the cable bundle and locks in position, minimizing stress on the wire bundle and providing more robust strain relief than other termination system.
Saddle clamp strain relief or heat-shrinkable molded shape provides strain relief and sealing.
| Saddle Clamp Version | SLC |
| Molded Boot Version | SLM |
| Clamp Only | SLCMM* |
| Body Only | SLX |
* MM = plating
Material Codes
| Material Description | Material Code: Solid, Spin-Coupling Adapter | Material Code: Spin-Lock Adapter | Finish Codes |
|---|---|---|---|
| Aluminum alloy | 19 | A | Standard material for normal applications |
| Stainless steel | 62 | S | Corrosion-resistant and high-temperature (firewall) applications |
| Nickel aluminum bronze | 01 | N/A | Exposed marine environments |
Finish Codes
| Finish Description | Color | Finish Code | Finish Code: Spin-Lock Adapter |
|---|---|---|---|
| Cadmium, per QQ-P-416, Type II, Class 3 over electroless nickel | Olive Drab | B | Available |
| Electroless nickel, per AMS-C-26074, Class 4, Grade B | Bright Silver | C | Available |
| Anodized, hard, per MIL-A-8625, Type III, Class 2 | Black | G | Not Available |
| Passivated, per QQ-P-35 or MIL-S-5002 | - | J | Available |
| Unplated, shotblast | - | W | Not Available |
| Zinc Nickel | Black | Z | Available |
Benefit
- Designed to be used with heat-shrinkable boots
- Variable angle backshells provides inventory reduction with one simple part
- Spin coupling adapter allows re-entry for repair
- KTKK assemblies offer one-piece easy installation
Features
- Short overall body length to fit where space is constrained
- Fits most circular connector designs
- Wide range of matching materials and finishes to connectors
- Provides strain-relief
- Accommodates a wide range of cable diameters
Typical Applications
- Repairable electrical harnesses for electronic interconnect systems
- Sealed cabling used with military circular connectors
- On board sealed Naval electrical cable
- Outdoor radar station sealed electronic harnesses
