General
Thread size	M12
Pitch thread	1,5 mm
Material	Polystyrene
Colour	RAL 7035
Hue	Light grey
Halogen free

The blind plug SKINDICHT® BLK-M12X1,5 from Lapp is a sealing component for pre-drilled threaded holes in the field of electrical and enclosure technology. It is used to seal unused threaded holes in distribution boxes, enclosures, or connection outlets in a tight and neat manner. The product is made of polystyrene and is available in the colour RAL 7035 light grey, enabling visual harmonization with other components in the enclosure. The thread size is M12, making it suitable for standard holes in the electrical installation technology sector.

Applications

The blind plug is primarily intended for use in distribution boxes, enclosure construction, and connection outlets. It serves as a cost-effective alternative for sealing unused threaded holes, thereby improving the external appearance of the enclosure and reducing the risk of dust or moisture ingress. Its use in industrial and commercial electrical installations is typical, where proper sealing of holes contributes to safety and ease of maintenance.

Functions and features in detail

The blind plug is screwed into the pre-drilled threaded hole and seals it tightly. It is made of polystyrene, a plastic known for its dimensional stability and low weight. The material selection allows for easy installation and a good fit in the hole. The product is halogen-free, meaning that no toxic halogen compounds are released in the event of heating or burning. This is particularly advantageous in enclosed spaces such as enclosures.

Technology explained simply

The designation BLK-M12X1,5 refers to the thread size M12 and a pitch of 1.5 mm. The polystyrene material provides sufficient strength for use in static applications where no high mechanical loads occur. The colour RAL 7035 light grey is a standardized colour code frequently used in the electrical industry to ensure uniform appearance. The halogen-free composition is a safety advantage, especially in environments where smoke gas emissions during a fire should be minimized.

Compatibility and accessories

The blind plug is designed for threaded holes with the M12 standard and thus fits into standard holes commonly found in distribution boxes and enclosures. It is not part of a complex system but is an independent sealing component.

Installation and mounting

Installation is carried out by simply screwing the plug into the pre-drilled threaded hole. No special tools are required; a screwdriver or suitable pliers are sufficient. The connection is mechanically stable but not designed for dynamic or highly loaded applications. Installation is typically performed without additional sealing materials, as the material itself provides sufficient sealing against dust and moisture.

The advantages in operation include easy handling, cost-effective production, and visual uniformity in the enclosure. The halogen-free composition contributes to safety, especially in enclosed spaces. The product is designed for static applications, where it ensures permanent sealing of the hole without requiring additional materials or tools.