TruSeal Materials

We use the best quality materials to suit the arduous conditions that our products often face. For the TruSeal range, cable glands are manufactured from unique combinations of polyamide, superior grades of nickel-plated brass and high quality 316L stainless steel, whilst the seals are moulded from silicone for high performance.


Polyamide is a hugely versatile polymer and one of the most widely used engineering thermoplastics. It is a tough, abrasion-resistant material which
can be moulded at a low temperature, meaning less shrinkage; guaranteeing a better quality and consistency of cable gland.

CMP’s unique formula of polyamide is a bespoke blend to ensure the product passes the stringent IEC/EN 60079 and 62444 tests, including the relevant tests for impact resistance.


Our brass cable glands are produced, using material grade CuZn39Pb3 (CW614N) to EN 12168 and EN 12164 which, according to IEC 62444 requirements, means that they do not need
additional corrosion resistance testing. They are plated in a bespoke automated nickel-plating line which utilises an advanced autocatalytic process for greater accuracy and reliability.


Our stainless steel cable glands are produced using material grade 316L to EN 10088-3 which, according to IEC 62444 requirements, means they do not need additional corrosion resistance testing.


CMP high grade silicone seals are weather and UV resistant with a good chemical resistance. Using silicone gives the added benefit of high temperature resistance and good compression set properties, meaning that if the cable gland has to be opened and reinstalled, the seal will still perform.


TruSeal TSPV0 cable glands have a UL 94 Flame Retardant rating of V-0, meaning they are suitable for use in areas of high vulnerability, where the spread of flame must be minimised. The table below shows the test criteria for a V-0 material compared with the lesser rated V-1 and V-2.


The classification of the ignition and burning resistance characteristics of materials other than metal or ceramic:

Number of flame applications per sample 2 x 102 x 102 x 10
Maximum burning time of one sample (seconds)≤ 10≤ 30≤ 30
Maximum burning time of five samples (seconds)≤ 50≤ 250≤ 250
Allowable dripping and subsequent
ignition of cotton below
Allowable afterglow remaining for: (seconds)≤ 30≤ 60≤ 60

In addition to TruSeal TSPV0 cable glands being flame retardant, they are produced using Low Smoke and Fume Zero Halogen (LSF0H) materials, making them suitable for a wide variety of applications.