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Fitting rubber boots to LNB cables 

Note: Most modern LNBs have a pull-down cover. If yours is this type, it is necessary only to coat the 'F' plugs, inside and out, with silicone grease. This will keep out condensation and the cover will deflect direct rainfall.

(Most modern multi-output LNBs have a sliding cover and need no boots.)

Note: If you order cable from us with rubber boots, we do not fit the boots to the cable, for the reasons explained HERE.

 

Picture of obsolete LNB for illustration only.

Our special flexible rubber boots are designed to provide a tight fit to the cable and "F" connector to keep out moisture. Before fitting each boot you should smear a little petroleum jelly ("Vaseline ®") or, preferably, silicone grease inside. This will allow it to slide easily on the cable and onto the "F" connector. Silicone grease will also help to seal out moisture and allow the boot to be removed more easily in the future. (Petroleum jelly gradually oxidises and is not long-lived). The rubber compound is designed for high-temperature use and is UV resistant. It should last a long time but you can extend its life by smearing silicone grease on the outside (after installation is complete).

Too much grease left over? Read about other uses.

If the LNB outlets are spaced too close together to permit adjacent boots to fit, you can trim away excess rubber with a sharp blade.

Dimensions

  • Internal hole: 6.7mm for cable
  • Internal hole: 10mm for "F" connector
  • Length: 71mm
  • Outside diameter: 15mm at "F" connector
  • Outside diameter: 12.4mm at cable outlet
  • Outside diameter: 20 max across ribbed section

Ensure that each boot is pushed firmly as far as it will go towards the LNB. As a final measure to keep moisture out of the cable, you may make a tiny "O" ring out of "Blu-Tack" or "White-Tack" and insert this inside the "F" connector. Simply take a tiny ball of "Tack" and push it down the protruding copper wire. This may be repeated at the receiver end if there is any possibility that the cable may move and chafe on roof tiles or bricks. Suitable for single-and twin-output LNBs. (May not fit on small 4- or 8-output LNBs.)

UV resistant and guaranteed for 10 years if used with silicone grease as described.

See Fitting F Connectors

Flexible rubber boot £0.75

Qty

Include silicone grease 50gm tube £3.95

Include silicone grease 10gm economy tub (see below) £1.25

This photo from "What Satellite TV" magazine shows what can happen when inferior rubber boots are used without silicone grease protection. These were not UV resistant and cracked open in sunlight, allowing water to corrode the connections.

By popular request, we are now offering low cost rubber boots!

Economy rubber boot pack. This low cost neoprene boot is available in a pack of 4 for just 99p. We can't guarantee it will last like our flexible boot (above) but it's cheap.

Economy rubber boots pack of 4 £0.99

Qty

Include silicone grease 50gm tube £3.95

Include silicone grease 10gm economy tub £1.25

Some LNBs have a slide-down cover. These need no rubber boots or tape. Simply smear the inside and outside of each "F" plug with silicone grease to keep out condensation.

"Installing a Sky Minidish"

Click HERE for more details.

Click HERE to watch movie excerpt - "fitting a rubber boot".

(You will need to have the free QuickTime Player installed).

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©2004 SatCure

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Gummitülle für F-Anschlüße zur Abdichtung der F-Verbindung Wasserdicht