Purosil is the premium silicone hose manufacturer in the USA since 1958.
Silicone rubber has an extremely long shelf life; US military has recommended shelf life of 20 years for silicone products that meet SAE J20.
Silicone hose products have the widest temperature range of all rubber products (-80C to 250C) (there are specialty products available with greater range, but these are very costly fluoropolymers and fluoro elastomers).
Silicone Hoses are well suited to harsh environmental conditions and
are resistant to: Compression set and deformation at high and low temps, Sunlight, water and extreme weather conditions, Bacterial growth and mould formation.