Leakproof Stainless Flask

Discover the ultimate companion for your daily hydration needs with our premium Leakproof Stainless Flask. Engineered for durability and everyday reliability, this flask is designed to keep your beverages at the perfect temperature for hours. Whether you're commuting to work, hiking a mountain trail, or simply working at your desk, you need a flask you can trust. Our vacuum insulation technology ensures your coffee stays piping hot or your water stays refreshingly cold, no matter the environment. For those seeking the classic standard of food-grade safety, our 304 Stainless Vacuum Flask offers excellent corrosion resistance. If you require superior durability for demanding conditions, especially against salt and chlorides, our upgraded 316 Stainless Vacuum Flask is the ideal choice. We offer versatile sizes to fit every lifestyle; the compact 500ml Stainless Flask is perfect for short trips or a single serving, while the generous 750ml Stainless Flask ensures you have ample hydration for longer adventures or a full day's supply.

The Leakproof Stainless Flask is built with precision and user experience in mind. Every component, from the threaded lid to the reinforced base, is designed to create a perfect seal and withstand daily use. We understand that a water bottle is more than just a container; it's an essential tool for your active life. That's why the Leakproof Stainless Flask features a one-handed, push-button lid for easy access, a comfortable non-slip grip, and a wide mouth for effortless filling and cleaning. Its sleek, minimalist design looks great in any setting, from the gym to the office. Forget about lukewarm drinks and inconvenient spills. The Leakproof Stainless Flask combines advanced thermal performance with rugged, dependable construction to deliver a hydration solution that simply works, day in and day out.

Leakproof Stainless Flask: Core Specifications

Material: Premium 18/8 Stainless Steel (304 Grade) or 316 Marine-Grade Stainless Steel
Insulation: Double-Wall Vacuum Insulation
Lid Type: Screw-on, Leak-Proof Flip Lid with Push-Button Open
Temperature Retention: Keeps drinks hot for up to 12 hours and cold for up to 24 hours
Exterior Finish: Brushed Stainless Steel or Powder-Coated Color Options
Compatibility: Dishwasher safe (top rack recommended); BPA-Free

Detailed Product Parameters

Model	Capacity	Height (with lid)	Diameter	Weight (empty)	Warranty
LSF-500	500ml (16.9 fl oz)	23 cm / 9.1 in	7 cm / 2.8 in	280 g / 9.9 oz	5 Years
LSF-750	750ml (25.4 fl oz)	27.5 cm / 10.8 in	7.8 cm / 3.1 in	380 g / 13.4 oz	5 Years
LSF-500 Pro (316)	500ml (16.9 fl oz)	23 cm / 9.1 in	7 cm / 2.8 in	290 g / 10.2 oz	Lifetime
LSF-750 Pro (316)	750ml (25.4 fl oz)	27.5 cm / 10.8 in	7.8 cm / 3.1 in	390 g / 13.8 oz	Lifetime

Hot Products

Travel Mug with Straw
In everyone's heart resides a commuter, traveler, and urban explorer. Jianyang Customized West Loop travel mug with straw， Capacity of 16 ounces (approximately 473 ml), equipped with an easy to clean cup lid, designed specifically for every journey. This insulated coffee cup adopts leak proof technology to prevent leakage and overflow, making it the best water cup to carry when going out. Simply press the button to drink, and release the button after each sip to seal. Jianyang vacuum insulation technology can keep liquids warm for up to 11 hours or cool for up to 24 hours. After drinking, the easy to clean cup lid can be fully opened, making it convenient for you to thoroughly clean every corner of the cup body.
Double Water Bottle
Are you still looking for a daily double water bottle that combines aesthetics, insulation, and portability? Still struggling with how much capacity to choose for insulated cups in different scenarios? Jianyang's durable double-layer stainless steel insulated cup with handle covers multiple capacity specifications and is suitable for use in home, commuting, and outdoor scenarios; Adopting vacuum temperature locking technology combined with food grade stainless steel material, it provides long-lasting insulation for hot and cold drinks, comes with an integrated handle for easy carrying, and is sealed upside down without water leakage. As a strong manufacturer at the source, we support spot wholesale, customized OEM, stable domestic and international shipments, and undertake foreign trade orders all year round. Our quality and supply capabilities are double guaranteed. Whether for personal use or bulk procurement, we are the preferred choice with high cost-effectiveness!
Inox Coffee Pot
The inox coffee pot is produced by Jianyang factory, which has many years of experience in manufacturing insulated vessels, and has a complete supply chain system and quality control process. From raw material procurement to finished product delivery, multiple testing standards are passed, supporting small batch customization and rapid sampling to meet the personalized needs of customers from different channels. The factory is equipped with automated production lines and a professional quality inspection team to ensure that every product meets industry-leading standards in appearance, functionality, and safety.
Stainless Water Bottle
This stainless water bottle produced by Jianyang features a brand new color scheme, and of course, we can also customize colors that suit your preferences. The bottle body is coated with scratch resistant Klean Coat powder, which is very durable and safe for both humans and the environment. Welcome to customize products with us!
Magnetic Vacuum Stainless Steel Water Flask
Transform your reusable water bottle into a multifunctional artifact! Jianyang's fashion Magnetic Vacuum Stainless Steel Water Flask combines the functions of a phone stand and tripod, allowing you to stay in touch while keeping hydrated. Whether it's fitness, office, or outdoor exploration, it's your favorite product. Welcome to our factory for observation and product selection!
Stainless Bottle
Customized stainless bottle is a major feature of Jianyang, with a modern style and excellent performance that can meet any of your needs. The twist cup lid only needs to be quickly rotated a quarter turn to close, with good sealing to ensure no water leakage, and the wide cup mouth can accommodate a large spoon for easy cleaning. The centrally located water outlet and conical base for easy cup holder make the design of this water bottle more upscale. The detachable carrying ring can easily hang keys or hang a kettle on the fitness bag.

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Leakproof Stainless Flask