FDA Silicone O rings are circular sealing components manufactured from high-purity food grade silicone rubber (VMQ). Designed specifically for food-contact and hygienic applications, these O-Rings are non-toxic, odorless, and tasteless, ensuring product safety and regulatory compliance.
Since their silicon–oxygen molecular structure, VMQ O-Rings maintain stable elasticity over a wide temperature range and withstand repeated thermal cycling. They are widely used in food processing equipment, beverage systems, kitchen appliances, and medical devices, where cleanliness and safety are essential.
Technical Specifications
| Property | Typical Range |
| Material | Food Grade Silicone Rubber (VMQ) |
| Temperature Range | -60°C to +225°C (up to +300°C for special grades) |
| Low Temperature Capability | Down to -100°C (special compounds) |
| Hardness | Shore A 25 – 90 |
| Color Options | Transparent, White, Red, Blue, Yellow, Green, Black, or Custom |
| Sealing Type | Static sealing |
Performance Characteristics
Food Contact Safety
Manufactured from food grade silicone compounds compliant with FDA and RoHS requirements.Wide Temperature Resistance
Operating temperature range from -60°C to +225°C, with special formulations up to +300°C.Excellent Low-Temperature Elasticity
Maintains flexibility and sealing performance at extremely low temperatures.Thermal & Aging Stability
Resistant to heat, oxidation, ozone, and environmental aging.Chemical Stability
Chemically inert to most food-related media, water, and cleaning agents.Electrical Insulation Properties
Suitable for applications requiring electrical safety and insulation.
O-Ring Size & Cross-Section Diagram
ID: inner diameter
OD: outer dimeter
CS: cross section
Applications
Food grade silicone O rings are mainly used in static sealing positions within hygienic and food-contact environments, including:
Food & Beverage Processing Equipment
Filling machines, pumps, valves, mixers, and pipelines.Household Kitchen Appliances
Pressure cookers, rice cookers, coffee machines, and food containers.Medical & Healthcare Devices
Sterilization equipment, laboratory instruments, and fluid-handling systems.Pharmaceutical Production
Cleanroom equipment and hygienic processing systems.General Industrial Equipment
Applications requiring food safety, temperature resistance, and clean sealing
QZSEALS supplies food grade Silicone (VMQ) O-Rings in a wide range of sizes, hardness levels, and colors. Standard sizes are readily available, and custom food-grade compounds and dimensions can be produced to meet specific application needs.
Contact us today to discuss your food-safe sealing requirements.
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