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What is the service life of a seat belt?

1 Answers

DeSabrina

07/29/25 7:07pm

The service life of a seat belt is three to five years. Here is some relevant information about seat belts: 1. Product classification: high-altitude work type, semi-full-body type, bungee equipment type, and automotive type. 2. Function: The function of a car seat belt is to instantly tighten and secure the loosely worn belt when a vehicle collides or emergency braking is applied, firmly restraining the occupant in the seat to prevent secondary collisions. Once the tightening force of the seat belt exceeds a certain limit, the force-limiting device will appropriately loosen the belt to maintain stable chest pressure. Therefore, car seat belts serve to restrict movement and provide cushioning, absorbing impact energy and dissipating inertial forces to avoid or reduce the severity of injuries to drivers and passengers. Car accident investigations show that in frontal collisions, wearing a seat belt can reduce fatalities by 57%, by 44% in side collisions, and by 80% in rollovers.

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