How to use self-amalgamating tape

How to use self-amalgamating tape

Of all the tapes available in today’s market, self-amalgamating tape is quite unique. Our guide looks at what it is, how it works, and how you can use it.

What is self-amalgamating tape?

Also referred to as self-fusing tape, self-amalgamating tape is a non-sticky tape that will only adhere to itself. To amalgamate means “to mix or merge so as to make a combination; blend; unite; combine.” So, when one layer of tape is stretched and placed over another layer of self-amalgamating tape, the two layers ‘blend’ or ‘combine’ to become a solid piece.

What is self-amalgamating tape made from?

At cableties-online, we supply self-amalgamating tape manufactured from ethylene propylene rubber which is weatherproof and rugged enough to cope with the demands of most applications, including roofing and sailing where it is used as rigging tape. There are silicone self-amalgamating tapes which offer a slightly higher voltage rating than ethylene propylene rubber but these offer much poorer tear resistance.

How to apply self-amalgamating tape

No protective equipment or specialist tools are required to use self-amalgamating tape, and a pair of scissors to cut the tape is all that is needed. The tape features a peel-away backing paper (to stop it from sticking to itself before needed) that has to be removed prior to use. Once the correct length has been cut, and the backing removed, the tape can be stretched and applied; when the tape is being wrapped around a cable, for example, ensure that each layer overlaps the previous. Overlapping in this way enables a stronger bond between layers and a 50% overlap is usually recommended, with 3-4 layers of tape being advised. Stretching the tape as you go will ensure a tighter wrap is created and will help the tape to stick to itself more effectively. The bond between the layers of tape will usually take only a few minutes to form but is capable of enduring for years.

Features of self-amalgamating tape

Easy to use and apply, this tape offers a high stretch performance, stretching up to 2-3 times its length. It is non-sticky and is effective across a wide temperature range. It is moisture, UV and chemical resistant.

Uses for self-amalgamating tape

Self-amalgamating tape is most commonly used to seal hoses, pipes and cables as well as to repair and protect them. It is particularly useful for protecting outdoor electrical joints in outdoor situations and, as mentioned above, it can protect sails from chafing in the marine industry. Plumbers will use self-amalgamating tape when fixing domestic leaks and car mechanics use it in radiator hose repairs. Closer to home, the tape is useful for adding more grip to sports equipment (racquets and bats), bicycle handles and much more!

Self-amalgamating tape from cableties-online

Our self-amalgamating tape is RoHS compliant, to give you the peace of mind that it contains none of the restrictive materials banned under the Restriction of Hazardous Restrictions (RoHS) and offers REACH compliance. This demonstrates that the European Chemicals Agency (ECHA) has passed it safe for use without harm to the end user. Available in two popular widths and three lengths, this forms part of our extensive range of tapes that we always have in stock.

For further help or advice on tapes, please email us at or call us on 01623 412160.