1. APPLICATION RANGE: This versatile lock nut is suitable for pipe securing in residential and commercial settings, industrial piping, and other water, gas, and oil pipe processing systems. 2. SIMPLE OPERATION: Easy to use, it can be screwed onto the corresponding G-threaded male pipes or fittings. The hexagonal design allows for easy tightening and loosening with a wrench. Ensure proper alignment and thread engagement for optimal performance and sealing. 3. DURABLE DESIGN: Crafted from brass, this hexagonal lock nut is meticulously crafted for high hardness, resistance to wear, corrosion, rust, and aging, ensuring long-term use. This lock nut is used to connect G-threaded pipes and hoses, locking the two threaded joints together for a secure, leak-proof connection. The included silicone gasket acts as a buffer to reduce vibration and maintain stability, preventing the nut from loosening. 4. PACKAGE INCLUDE: 1 pcs Cast Pipe Fitting Hex Locknut, 1 pcs x Silicone Washer; Female Thread: G 2", Diameter: 56.5 mm / 2.22 inch ID; Thickness: 14 mm / 0.55 inch; Material: 304 Stainless Steel; Color: Silver 5. NEED ATTENTION: Please check the size before choosing our product.