ISO WS454N Type 316 Stainless Steel Wing Seals 1/2" - 100 per Box. It Straps On, Inc., Type 316 wing seals are the most rust and corrosion resistant stainless steel. Type 316 wing seals are usually referred to as "marine grade" stainless steel. It Straps On, Inc., the band and buckle experts are providers of high-quality stainless steel banding, buckles, wing seals and sign brackets. ISO is an American manufacturer and our stainless steel is melted and manufactured in the USA to ASTM Standards. It Straps On, Inc. products are a perfect choice anytime your application requires strength, durability and corrosion resistance. Easily installs with the following tools: Tools also used to install are Cool Tool #TOO1, Ratchet Tensioner #T101 and Tensioning Tool #T1916