Keep your manual filling machine running smoothly with these replacement seals and valves. Designed for A03 and A02 models, these parts include piston seals and PTFE valves that wear out over time. Made by Youlian and manufactured in China, they’re affordable yet reliable replacements. Ideal for maintenance kits, repair jobs, or just having spares on hand in food, cosmetic, or chemical filling operations. They help prevent leaks and ensure consistent dosing. Comes brand new in original packaging. Great for small factories, labs, or DIY filling setups. UPC: 6971285855323. No MPN listed.