... : PP, PCPlastic silicone sealed lid. Features: Airtight seal with 4-side-locked.Modular stackable & space-efficient. Applications: Applicable in dishwasher, refrigerator, and ... : PP, PCPlastic silicone sealed lid. Features: Airtight seal with 4-side-locked.Modular stackable & space-efficient. Applications: Applicable in dishwasher, refrigerator, and ...