... carMaterial100% SiliconePhysical Properties1. Grommet made of silicone is excellent in electrical insulation, anti-aging/ozone/weather resistance,2. Obturator ... irregularitties.What's more,it works well in preventing air/water/heat leakage.On top of air-tightness,it also ... .we could supply FDA,RoHS and SGS certificates on demand.4.In-time information of manufacturing status and delivery.5.OEM ...