Designed specifically for the Jackson Safety HSL 100 Passive Welding Helmet, the Light Seal Gasket is an essential accessory that ensures optimal protection during welding tasks. With precise dimensions of 4.75 inches in width, 5.35 inches in length, and a height of 0.55 inches, this gasket is engineered to fit seamlessly, preventing light leaks that can compromise safety and visibility. Each case includes two replacement parts, allowing for convenient maintenance and extended use of your welding helmet, making it a practical addition to your safety gear. Manufactured in Vietnam, this lightweight gasket weighs only 0.0250 lbs, ensuring it won't add unnecessary bulk while providing reliable performance in demanding environments.