DeoxIT D-Series contact cleaner is a fast-acting deoxidizing solution that cleans, protects, lubricates and improves conductivity on all metal connectors and contacts. Use as a general treatment for connectors, contacts and other metal surfaces, and on non-critical metal surfaces with severe oxidation and corrosion. If the metal surface is discolored, it is severe. For reference, DeoxIT has approximately 20% cleaning action. KEY FEATURES: Improves Conductivity Deoxidizes, Cleans & Preserves Reduces Intermittent Connections Reduces Arcing & RFI Reduces Wear & Abrasion Temperature Range, -34 C (-29 F) to +200 C (400 F) DeoxIT Shield S-Series - Contact Protector, for severe environments. (formerly PreservIT) Recommended after DeoxIT D-Series contact cleaner for best protection and NEW metal surfaces, usually in the manufacturing process. It is also ideal where high degrees of pollution (sulfur, salts, acids, etc.) are present. DeoxIT Shield S-Series should be applied to a clean surface - after using DeoxIT D-Series or other cleaning method. For reference, DeoxIT Shield has 0% cleaning action. Temperature Range, -34 C (-29 F) to +210 C (410 F) (Pre-clean with DeoxIT D-Series Contact Cleaner) KEY FEATURES: Ideal for severe environments (humidity, salts, pollutants, sulfur, etc.) Excellent protection, good conductivity enhancing, excellent lubrication, NO cleaning. Creates a long lasting barrier against oxidation and corrosion. No ozone depletion. Reduces intermittent connections, arcing, RFI, wear and abrasion. Cleaner Audio - Clearer Video - Reliable Data.