General
Colour	Black

The Helavia DGC 21 black is a membrane grommet made of polychloroprene rubber, designed for use in electrical and IT installations. It serves as a protective and guiding element for cables and lines, particularly at connection points where a tight and simultaneously flexible seal is required. The product is delivered in a packaging unit of 100 pieces and is black in colour, making it suitable for use in industrial and technical environments.

Membrane grommets are specially designed protective parts that create an elastic, shape-stable seal between an enclosure and a passing cable or line. The Helavia DGC 21 black is manufactured from polychloroprene rubber, a material known for its high chemical resistance, weather resistance, and mechanical strength. These properties make the product suitable for use in various environments, particularly in areas with increased requirements for tightness and durability.

Functions and equipment in detail
The membrane grommet DGC 21 black is cross-slitted, meaning it elastically wraps around the cable to be passed through and ensures a tight seal. The slitting allows for easy installation, as the cable can be inserted through the grommet without tools. The shape design ensures that the grommet adapts to the cable's geometry and provides mechanical protection by shielding against mechanical stresses such as friction or pressure. The black colour is standard and meets the requirements for a discreet yet visible installation in technical systems.

Technology explained simply
The grommet is made of an elastic material that stretches during installation and then returns to its original shape. This behaviour ensures a lasting seal, even with minor movements of the line. The material composition of polychloroprene rubber offers high resistance to UV radiation, ozone, heat, and many chemical substances, extending the product's lifespan in demanding environments. The weight specification of 7.24 g per piece indicates the low mass of the individual part, which facilitates easy handling and installation.

Compatibility and accessories
The Helavia DGC 21 black is designed as a single component for use in cable entries. It is used in conjunction with other installation elements such as cable protection conduits, enclosures, or switchboards to ensure a tight and secure connection. The application is typically in electrical and electronic systems where mechanical and electrical insulation, as well as sealing against dust and moisture, are required.

Installation and mounting
Installation is performed by simply inserting the cable through the cross-slitted opening of the grommet. The elastic nature of the material ensures that the grommet closes around the cable and creates a tight connection. No additional tools or adhesives are required. The grommet is inserted into the designated hole or opening of an enclosure, with the shape design ensuring it fits securely against the surface and provides mechanical stability.

Advantages in operation
The Helavia DGC 21 black provides a reliable seal that maintains its function even under long-term stress. The material quality ensures a long service life and resistance to environmental influences. The simple tool-free installation reduces installation effort and enables quick processing. The packaging of 100 pieces is suitable for professional use, as it allows for efficient storage and handling.