40PCS 3ml Cartridge Caps, Silicone Caps for 3ml Pen Cartridges,10 Colors

KNOCKO 40PCS 3ml Cartridge Caps are made from soft, Whether you need this caps for vials for daily lab work or travel, these reusable caps for vials offer durable protection and a reduce waste solution. Product Specifications： Material: Premium silicone Compatibility: Engineered for standard 3ml glass pen cartridges (0.48in×2.52in). Not for non-standard sizes – please verify your cartridge dimensions before ordering. Quantity: 40 PCS 10 colors Temperature Range: Safe for refrigeration (2–8°C) and ambient room storage. Cleaning: Rinse with water, air dry & Reusable Design: Thin-wall, lightweight, one-piece seamless construction Product Highlights： Soft silicone buffers against impacts. When multiple cartridges are stored in a case or cooler, they won’t clink or crack – reducing glass breakage risk. Perfect for clean storage. Secure Grip, Easy Removal – Designed with just the right amount of hold: stays put during normal handling or travel, yet pulls off effortlessly when you need it. Reusable & Cost-Effective – Washable and durable, outlasting disposable plastic caps. Color-Coded Organization – 10 distinct colors let you instantly identify different medications, doses, or expiration batches – reduces errors and saves time. Usage Scenarios: Labs & Clinics – Keep your peptide pen cartridges organized and hygiene‑free while refrigerating or transporting samples. Home & Travel Everyday Protection Applicable to:3ml pen cartridge，3ml cartridge for peptide pen，peptide pen cartridge，3ml pen cartridges for peptide pen，3ml cartridge holder，injection pen cartridge Whether you’re a researcher, clinician, or home user, these caps deliver reliable physical protection and cleanliness, so your valuable cartridges stay ready when you are.

• High-Quality Silicone Protection: silicone caps serve as protective caps for your 3ml pen cartridge and empty cartridges. Made from elastic silicone that rebounds fast, they prevent scratches on aluminum seals and stoppers. Water- and dust-resistant, they block debris and moisture from the septum. Reusable: rinse and air dry. Fits all standard 3ml cartridges and any 3ml cartridge
• Color-Code Your Vials with 10 Shades: 40 PCS 10 bright colors allow you to quickly spot the right cartridge. Lightweight and slim, these silicone caps add minimal bulk, perfect for 3ml cartridge holders and storage boxes. Reusable and eco-friendly – simply rinse and dry. 10 distinct colors let you instantly identify different medications, doses, or expiration batches – reduces errors and saves time,Ideal for Labs, Medical Offices & Studios – Improves Workflow and Safety
• Precision Molding, Custom Design: Universal 3ml pen cartridge compatibility – suits peptide pen cartridge, 3ml peptide pen cartridge, 3ml cartridge for peptide pen, and 3ml pen cartridges for peptide pen. Works with 3ml pen cartridge with 11mm long stopper, injection pen cartridge, and spacers for 3ml injection pen cartridge. fits any 3ml cartridge holder, 3ml pen cartridge storage box, and case pen 3ml. Note：This silicone cap is only compatible with 3ml pen cartridge
• Snug fit, excellent seal, dustproof ：Dust-proof and moisture-resistant, these caps seal the septum of your 3ml pen cartridge, keeping it clean. Multi-color pack (10 colors) helps you quickly identify different peptide pen cartridges or batches. For optimal fit, verify that your cartridge matches the standard 3ml cartridge dimensions (0.48in×2.52in)
• Safe and Effective Storage Protection: Flexible silicone cushions each 3ml cartridge and 3 ml cartridges from impact, preventing glass breakage. Unlike hard plastic covers, these caps won’t scratch aluminum seals or rubber stoppers, staying secure on empty cartridges. Ideal for refrigerated storage, travel, or in a cartridge holder. Safeguards your peptide pen cartridge and injection pen cartridge