Seat Belt Tightener

 Fast Action in a Crash

Our seat belt tightener is also called a pre-tensioner. It pulls the webbing back very fast when a crash happens. It removes slack and holds the passenger early. The trigger time is ≤10 milliseconds. That is extremely fast. The seat belt tightener reacts right after the crash signal. The pre-tension force is ≥1 kN. The pulling travel is ≥100 mm. It tightens before your body moves forward. This greatly lowers injury risk.

Safe and Long Life

When not triggered, the product works normally. It can extend and retract freely. It passes 5,000 durability tests with no wrong trigger and no jamming. The gas generator lasts ≥10 years. That covers the full life of most cars. We assemble this product in a dust-controlled and temperature-controlled room. This keeps the trigger action stable. It fits most three-point seat belts in popular cars. The mounting spots are standard. You can replace or upgrade directly.

Works in Hot and Cold Weather

The flame rating is GB 8410-2006 A-0. It resists high heat and does not trigger by accident. The working temperature is -40℃ to +85℃. Even in very cold or very hot places, the product still works. Our factory has a special lab for pre-tensioners. Each batch is tested for trigger time, travel length, and force. The product has E-MARK certification. It can be exported to Europe. This seat belt tightener gives you very fast trigger, a long valid life, and high stability. It is a key part for active safety upgrades.

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