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General Replacement and Care Tip: Before installing, verify model compatibility and inspect the lid opening for debris. Insert stem from outside with gasket positioned inside, ensuring the silicone ring seats fully in its groove. After replacement, perform a water test to verify proper float movement and seal before regular use. Clean gaskets regularly with mild soap and water; replace if cracking or loss of elasticity occurs.Specifications: Material: Metal+Plastic 50/100/200pcsNote: 1.Please allow 1-2cm errors due to manual measurement. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Pressure Maintenance Component: The floating stem rises and seals against the gasket when internal pressure builds, creating a visible indicator that the cooker has reached operating pressure while maintaining the steam-tight environment Corrosion-Resistant Metal Construction: The stem is fabricated from aluminum alloy that resists oxidation and degradation from repeated exposure to high-temperature steam and acidic cooking ingredients without compromising function Food-Grade Silicone Sealing Gasket: The soft silicone washer compresses between the floating stem and lid housing, forming a flexible pressure barrier that accommodates thermal expansion while preventing steam escape during cooking cycles Model-Specific Replacement Compatibility: Engineered dimensions match precise requirements of listed pressure cooker models, ensuring proper fit and reliable operation when original components become discolored, worn, or damaged Complete Maintenance Kit Configuration: Each package includes multiple stems and spare gaskets, providing backup components for future replacements and reducing downtime when washer deterioration affects sealing performance Item Weight 8.8 ounces Manufacturer KaiYeA Item model number KaiYeA Package Dimensions 0.39 x 0.39 x 0.39 inches