Circular Backshells

Amphenol Ltd offers a wide range of both M85049 and proprietary environmental and EMI backshells for circular connectors including strain relief clamps and adaptors for heatshrink boots or overmoulding.

Request a quote or more information on our range of circular connector backshells using our Enquiry Form

Backshells provide strain relief, environmental sealing and/or EMI shielding.

Some Backshells can be used without any additional protection while other types are generally used with heat-shrink boots or similar protection/strain relief mechanism depending on specific requirements.  Our most popular backshell style is the BK4 Band Lock Adaptor for screened cables which can be supplied with or without termination band and heatshrink boot and is available in a variety of materials, finishes and exit angles.

Amphenol Backshells for Military & Aerospace applications are supplied in accordance with the AS85049 / M85049 specification however Amphenol also offers a much broader range of additional proprietary designs and finishes as well as supporting complete customisation of a backshell solution.

Amphenol backshells are typically offered on an 8-12wk leadtime but are also stocked by our distribution partners Acal BFi, PEI GenesisRS, and Farnell.

You may wish to visit www.backshellworld.com to build a part number or use our cross-reference tool here. We also have a handy guide on how to select a backshell.

A limited range of 3D models for backshells are available to download here

For Mil-DTL-38999 Series III  use connector group "L"

For 62GB use connector group code "N" 

 

Band Lock Adaptor (BK4)
 

BK4 Band lock adaptor backshell braid trap military - Most popular for screened cable termination
- Use with heatshrink boot or moulding
- Screen termination with retention band 
- Alternative to Polamco 91H1 / BTA1 series
- Click here to download the drawing datasheet

 

Non-Environmental

 Backshell (BN1)

non environmental backshell - M85049/21, M85049-29
- Good strain relief
- No environmental or EMI protection
- Alternative to Polamco 77H series
- Click here to download the Catalogue

 

Environmental Backshell (BE1) environmental backshell adaptor - M85049/7, M85049/9, M85049/11
- Good strain relief and sealing 
- Suitable for 6 foot water immersion
- Suitable for harsh environment applications
- Click here to download the Catalogue

 

Non-Environmental EMI/RFI

 Backshell (BM1)

Non Environmental RFI EMI Backshell screen termination accessory - M85049/19, 23, 24, 25, 36
- Good strain relief
- 360-degree screen termination
- Accomodates individual & overall shielding
- Click here to download the Catalogue

 

Environmental EMI/RFI

 Backshell (BV1)

Environmental RFI EMI Backshell sealed screen termination accessory - M85049/6,8,10,17,78
- Good strain relief and sealing
- Offers excellent shielding and sealing.
- Accomodates individual & overall shielding
- Click here to download the Catalogue

 

Shrink Boot Adaptor (BB1) Shrink Boot Adaptor Accessory - M85049/60-1, M85049/62, M85049/69
- For unshielded cables
- Terminated with heatshrink boot
- Groove for heatshrink boot lip
- Click here to download the Catalogue

 

Crimp Ring Adaptor (BC1) Crimp Ring Adaptor Screen termination accessory backshell - M85049/20 and M85049/26-3
- For screened cables 
- Terminated with heatshrink boot
- Crimp ring supplied to fix cable screen
- Click here to download the Catalogue

 

Band Lock Adaptor (BL1) Band Lock Adaptor BL1 accessory backshell - M85049/82, 83, 84, 85, 86, 87, 88, 89, 90
- For screened cables
- Terminated with heatshrink boot or mould
- Tempered band / band-it to fix cable screen
- Click here to download the Catalogue

 

Pre-Shielded Adaptor (BH1) Pre-shield Adaptor BH1 Polamco series 70H pre-braid backshell - M85049/109,111,112,114,115,117
- For screened cables 
- Supplied with a length of braid attached
- Alternative to Polamco 70H series
- Click here to download the Catalogue

 

SQ Adaptor (BU1) SQ adaptor backshell BU1 - For screened cables
- Cost effective braid termination
- End nut tightened over cable shield
- Used with heatshrink boot
- Click here to download the Catalogue

 

Quick Clamp (BQ1) Quick Clamp BQ1 - M85049/15,16, 53, 54, 55, 56, 57, 63
- Used to tidy-up cables
- For weight critical applications
- E.g civil and military aircraft
- Click here to download the Catalogue

 

Strain Relief Clamp (BS1) Strain Relief Clamp - M85049/38, 39, 43, 47, 49-2, 51, 52
- Provides strain relief & cable tidy
- No environmental protection offered
- Alternative to Polamco 96H / 97H1 series
- Click here to download the Catalogue

 

Grommet Nut (BG1) Grommet Nut - M85049/14, M85049/27, M85049/31
- Holds grommet and contacts in place
- Used when no backshell required
- Eliminates cost of backshell
- Click here to download the Catalogue

 

Lamp Thread Adaptor (BP1) Lamp thread adaptor backshell - Threads similar to lamp base
- Nut or clamp termination
- Strain relief with or without heatshink boot
- Alternative to Polamco 95H series
- Click here to download the Catalogue

 

 

 

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