Libec Silicone Oval Cowl Vent - 3" Neck, Ring Nut Connection

Silicone rubber is an inorganic synthetic material. While silicone rubber looks and feels like organic rubber, it has a completely different chemical structure. This structure gives silicone rubber a very flexible feel as well as providing a material that has very small dimensional changes over a wide range of temperatures. Silicone has a typical service temperature range between -148°F and +392°F.

Silicone rubber has many excellent mechanical qualities, but its greatest advantage is that it will not discolor in UV light. So, even after years in the Caribbean sun, these ventilators will still look like new.

Excellent resistance to high temperatures, ozone, UV light, moisture, and fungal discoloration.

Two connection methods!

The ring nuts and mating deck flanges are made of hard plastic. The cowl ventilators can revolve and are removable. No tools are required, the ring nut can be loosened easily by hand. A Monel mosquito screen and a stainless steel (AISI 316) cover plate to close off the cowl ventilator, can be purchased as an option. See Accessory Products, below.

The newer models are fitted with a fixed screwed-down synthetic ring, designated by the suffix "S," providing secure installation while allowing the cowl to rotate or be removed by hand after loosening the knurled base ring.