Viton sponge is a closed cell, soft density foam that is manufactured with a continuous skin on both sides. The skin makes the sheet stronger and more tear resistant and even when the surface skin is punctured or cut, the material will not allow the passage of air or fluid between cells. The non-absorbent sheets are highly compressible, resilient, lightweight, and provide good thermal insulation. Like dense Viton, this material is generally resistant to aliphatic and aromatic hydrocarbons, oil, fuels, ozone and weather, lubricants, and animal or vegetable oils. It is also resistant to acids and hot water. Optional pressure sensitive adhesive (PSA) is available.