Sebaceous gland the hair shaft. The structure consisting of hair, hair follicle, arrector pili muscles, and sebaceous gland is an epidermal invagination known as a "pilosebaceous unit". Sebaceous glands are also found in hairless areas (glabrous skin) of the eyelids, nose, penis, labia minora, the inner mucosal membrane of the cheek, and nipples. Some sebaceous glands have unique names. Sebaceous glands on the lip and mucosa of the cheek, and on the genitalia, are known as Fordyce spots, and glands on the eyelids are known as meibomian glands. Sebaceous glands of the breast are also known as Montgomery's glands. Sebaceous glands are
WKT (sealant) WKT (sealant) WKT is a sealing compound which was developed by Paul Pietzschke, Chemisch-Technische Fabrik, Hamburg, Germany in 1962 specifically to meet the stringent requirements in the yacht and ship building industry. WKT belongs to the silicone group of sealants. WKT is a highly elastic and extremely non-ageing sealant. WKT is a silicone rubber and one of the first fully synthetic sealants for the commercial marine industry. The active ingredient in WKT sealing compound is polydimethylsiloxane. Today WKT is used in countless fields of applications such as the construction and building industry, windows and glazing, interior industry, plant engineering and