- Direct Replacement: This safety lock with black o-ring (4.590-105.0) is designed specifically for steam cleaners, including models SC1.010, SC1.020, SC1.030, SC2.000, SC3.000, and more, ensuring a perfect fit that enhances your cleaning efficiency. - Enhanced Safety Features: Featuring a dependable safety valve and a robust black o-ring (6.363-279.0), this cap effectively prevents leaks and maintains optimal pressure, ensuring safe operation during your cleaning tasks. - Superior Construction: Made from high-quality materials, this replacement part is engineered to endure high temperatures and pressure, delivering long-lasting performance and reliable functionality for your steam cleaner. - Effortless Installation: No special tools are needed—this safety lock cap attaches easily to compatible models, allowing you to quickly get back to your cleaning routine with minimal interruption. Use Scenarios: - Ideal for routine deep cleaning of carpets and upholstery, providing consistent steam pressure without the worry of leaks. - Perfect for sanitizing hard surfaces in kitchens and bathrooms, ensuring safe and efficient cleaning without downtime. - Great for tackling tough stains and grime in various home environments, enhancing the overall effectiveness of your steam cleaner.