Compatible with EATC temperature controllers, can be used in different temperature control devices, and are also suitable for industrial and household applications that require high sealing. Each O-ring measures 7x4x1.5mm, please check the dimensions carefully. O-rings can effectively prevent thermostat leakage, provide stronger sealing protection, ensure the efficient operation of the temperature control system, and avoid gas or liquid leakage. The 70A hardness design makes the O-ring have good wear and aging resistance, which can maintain its performance for a long time and reduce maintenance frequency. Each package contains 100 O-rings, which is suitable for large-scale repair or replacement, and convenient for inventory management., Manufacturer: LT Easiyl