Silicone airtight seals/gaskets for food containers/lunch box

Mainly used for sealing and keeping fresh among lunch boxes, food boxes, containers,cups and some other food containers.
1.non-toxic,odorless and safety. 
2.Good sealing and fresh keeping. 
3.Color can be customized.
4.Aging resistant, low PH resistant and tear resistant.
5.Low and high temperature resistant from -60 to 300℃.
6.FDA, LFGB,RoHS certifications.
Technical Data Sheet:
Material: 100% silicone rubber.
Tolerance Range: ±0.1mm.
Hardness: 40-80A.
Delivery time: Within 3-10 days.
Certifications: FDA,RoHS,LFGB.
Color: Any colors.