merXu
Cancel

Seals

(231 results)
Sort by
Didn't find what you were looking for? We will help you!

Gaskets

Electrical gaskets Electrical gaskets are used to ensure tightness of electrical equipment enclosures, cabinets and switchgears as well as places of cable or wire entry into enclosures. In this case, they not only protect the interior of the enclosure against the ingress of dust or liquids, but also protect cables and wires from mechanical damage (e.g. cutting the insulation through a sharp edge of an opening in a metal enclosure).Gaskets are also used to provide greater IP protection for electrical equipment.

Application of gaskets in the electrical industry

The most common electrical gaskets are made of rubber, which is an inexpensive material, yet malleable, durable and resistant to both water, temperature, electricity and sound waves. It works perfectly in electrical engineering, although a big competition for it is silicone. More aesthetic, transparent if necessary, it has its raison d'être wherever the appearance of the seal is important.

Another sealing material used in electrical power engineering is fibra, which is made from pressed cotton paper or cellulose soaked then with zinc chloride. Thus created material is an excellent sealing material resistant to water, kerosene derivatives and inert liquids. Fibre is used in electrical engineering, but most often as an insulator in electric motors, transformers and pumps.

Apart from rubber, silicone and fibre gaskets, other sealants are used in electrical engineering, such as polyurethane resins to create durable seals in cable joints and similar applications.

Electrical gaskets for enclosures, conduits and fittings

The market for electrical sealing products mainly includes adhesive seals in the form of tape, edge protectors, seals dedicated to electrical fittings and cable entries of various cross-sections.

Sealing of enclosures

Equipment housings and electrical and control cabinets are usually constructed in such a way, that they protect the installed equipment against penetration of objects, which can cause damage to the equipment, as well as against water, which not only damages the electronics and electrical equipment, but in combination with current poses a serious threat to life. The degree of protection provided by a given enclosure is indicated by the IP coefficient, and its value is influenced, among others, by the use of edge seals in the doors of enclosures.

Edge seals in electrical engineering are mainly made of rubber, which is an excellent dielectric and at the same time a cheap and easy material to process. However, silicone gaskets are also available on the market, as well as gaskets made of other materials with parameters ensuring adequate sealing of enclosures.

Sealing cable and wire connections to enclosures

Glands, also called cable glands or cable glands, are used for sealing cable connections to enclosures. Glands are small elements made of rubber or plastic, allowing cables or wires to pass through the walls of electrical cabinets or equipment enclosures. Grommets are available individually or in sets, e.g. in the form of frames with several or even tens of sealed holes. Single cable glands are used to supply power to electrical devices with one cable, whereas multiple cable glands are used in electrical switchboards, control cabinets and rack cabinets, where all cables supplying external devices are led out, e.g. at the base of the enclosure.

Sealing of electrical equipment

Electrical equipment in the form of sockets, switches and installation boxes available on the market is characterised by varying degrees of IP protection. Sockets and switches used in flush-mounted installations inside rooms with normal conditions (average humidity, room temperature, no exposure to water, no aggressive chemical agents or dust emissions) are designed to protect against contact with live parts (i.e. live wires inside the switch, socket or box). For this purpose it is enough to have IP 20 rating.

In rooms which are more exposed to water, e.g. in bathrooms or laundries, it is recommended to use sockets and switches with a higher degree of protection IP 44. Therefore sockets and switches are equipped with gaskets, and sockets are additionally equipped with a flap - in this case the gaskets serve to increase the degree of protection of sockets and switches.