A rectangular plastic end cap, measuring 32x45 mm, designed for sealing profiles. The cap consists of an external section that sits outside the profile and an internal section—or "core"—that is driven into the profile. The design of the top surface gives the cap an aesthetic appearance, while its textured finish helps prevent scratching when items are packed together. The lower part of the cap features a core with protruding "fins" (or ribs); as the cap is inserted, these fins adjust to the thickness of the profile wall. The caps are made of polyethylene, a versatile material suitable for a wide range of applications.

Polyethylene is characterized by low abrasion, resistance to environmental stress cracking, high dimensional stability—even at low temperatures—excellent chemical resistance, and low water absorption. It is resistant to fluctuating atmospheric conditions and UV radiation. It also possesses good electrical insulating properties. Polyethylene is a completely physiologically inert material, which makes it fully approved for contact with food.