NVH (Noise, Vibration and Sound Insulation Roughness) performance upgrade
Indicators Fuel vehicles Pure electric vehicles Technical breakthroughs
Air tightness requirements Increased by 30%-50%
Sealing strip usage length Increased by 10%-20% Enhanced sound absorption and noise reduction effect
Value increase Increased by 20%-30% Upgrade of sponge tube density, resilience, and compression permanent deformation indicators
To improve NVH, the value of sealing strips for each electric vehicle increases by approximately 20%-30%, and the number of sealing channels significantly increases. .
2. Waterproof and Dustproof Grade Requirements
IP67/IP68 Grade: Not afraid of daily rain or immersion
Resistant to erosion by lithium electrolyte inside the battery, without swelling or failure
Not aged by ozone or ultraviolet rays over a long period (8-10 years)
Adaptable to vehicle jolts and vibrations, maintaining sealing reliability
3. Temperature Range Expansion
Operating/Storage Environment: -40℃~85℃
Adaptable to extreme environments in northern winters and southern summers
Some high-end materials (such as PTFE) can withstand temperatures up to 260℃