Reliable brass valve core with PTFE coating — replacement part for diving tank valves Key benefits Prevents leaks and restores valve performance: precisely machined rectangular protrusion seats securely in the valve assembly to stop leaks and ensure consistent gas flow. Durable and low-friction construction: brass body with a polytetrafluoroethylene (PTFE) coating resists wear and reduces friction for longer service life. Easy to handle and install: compact size and straightforward replacement design make it suitable for routine maintenance by divers and technicians. Features and specifications Material: brass core with PTFE (polytetrafluoroethylene) coating for improved wear resistance and smooth operation. Protrusion size: rectangular 10 x 6 x 4 mm for a precise fit in compatible valve assemblies. Overall length: about 18 mm, compact and easy to manipulate during replacement. Function: direct replacement valve core designed specifically for diving tank valves to maintain the efficiency and safety of your gear. Compatibility and usage notes Intended for diving tank valves that accept a valve core with a 10 x 6 x 4 mm rectangular protrusion and an overall length of approximately 18 mm. Check your valve assembly dimensions before purchase to confirm compatibility. Practical applications Routine maintenance: replace a worn valve core during scheduled service to prevent leaks and keep tank performance consistent. Dive-boat or rental shop use: keep spare cores on hand to quickly repair valves between dives and reduce downtime. Training and instruction: use during equipment demonstrations or classroom maintenance sessions to show proper valve replacement and inspection. Why choose this part Restores seal integrity and operational efficiency without needing a full valve replacement. Robust material and PTFE coating provide a balance of durability and smooth function for underwater use. Small, precise design suited to divers, technicians, and service shops needing a reliable, easy-to-install replacement core.