Band: Stainless steel - Type #304. Lugs: Malleable Iron - Electro galvanized with dichromate finish. Bolts & Nuts: Carbon Steel - Electro galvanized with dichromate finish. WASHERS: SAE flat washer - Zinc II plated meets specifications of ASTM-F844. Gasket: Neoprene (Chloroprene) all-purpose indoor/outdoor synthetic rubber. Resistant to most chemicals, oils, weather, etc. Also available in Buna-n (nitrile), especially resistant to aromatic hydrocarbons, gasoline, petroleum oils, mineral oils, vegetable oils and natural gas. Temperature Rating: -50 degrees F to 240 degrees F. Pressure Rating: 150 psi (based on city water pressure).