【Vacuum Degassing Chamber】 This acrylic vacuum degassing chamber helps protect hygroscopic materials from moisture. Ideal for storing optical lenses, metal parts, and glassware, or for degassing silicone and resin to reduce air bubbles 【Long-Lasting Airtight Performance】Maintains a reliable seal for up to 24 hours. The silicone seal on the lid supports vacuum levels as high as -29 inHg. Dual ball valves and a built-in vacuum gauge give you simple control over vacuum and venting steps 【Strong 20mm Thick Acrylic 】 Made from high-strength, transparent acrylic that resists deformation under vacuum pressure. The clear walls let you monitor degassing progress or stored items from any angle 【Square Shape for More Usable Space 】 Unlike round chambers, the square design fits molds and containers more efficiently. Helps achieve smoother sur-faces on casted resin or silicone by effectively removing trapped air. Also works as a dust-proof sealed storage box. 【Versatile for Lab & Workshop 】 Suitable for petrochemical, pharmaceutical, and metallurgical research, as well as craft applications. Supports consistent sample preparation and drying across different experimental or production needs