Looking for FDA-compliant sealing that resists extreme temperatures? Silicone O-rings combine durability, flexibility, and safety across food, medical, and industrial uses.
Silicone O-rings perform from -60°C to 230°C and meet FDA-grade standards for medical and food equipment.
Here’s how to choose and apply the right silicone O-rings.
What are silicone O-rings used for?
Silicone O-rings are soft, flexible, and resistant to heat and UV. They’re ideal for non-reactive and sensitive sealing needs.
| Industry | Application Example |
|---|---|
| Food & Beverage | Processing machines, containers |
| Medical Equipment | Pumps, valves, lab tools |
| Automotive | Engines, gaskets, electric systems |
View our silicone O-ring products for full specs.
What makes silicone O-rings different from NBR or FKM?
Compared to NBR and FKM, silicone offers unmatched cold flexibility and non-toxicity.
| Feature | Silicone | NBR | FKM |
|---|---|---|---|
| Temperature Range | -60°C to 230°C | -40°C to 120°C | -20°C to 200°C |
| FDA Approved | ✅ Yes | ✅ Yes (limited) | ❌ Often not |
| Chemical Resistance | Moderate | Good | Excellent |
| Cost | Moderate | Low | High |
Are silicone O-rings durable under extreme conditions?
Absolutely. Here’s what I’ve seen in the field:
- ✅ High heat stability: Used in engines and autoclaves
- ✅ Ozone and UV resistance: Ideal for outdoor and light-sensitive systems
- ✅ Elastic memory: Maintains shape even under long-term compression
Need custom sizing? Use our O-ring maker tool for tailored solutions.
Can silicone O-rings be used in medical and food-grade systems?
Yes, that’s where silicone really shines:
- Medical: Syringes, diagnostic devices, infusion pumps
- Food: Dairy, beverage machines, valves, dispensers
- Personal care: Skincare tools, packaging, cosmetic seals
Always request FDA-grade silicone to ensure safety.
How to choose the right silicone O-ring size and hardness?
When selecting silicone O-rings:
- Measure ID, OD, and cross-section precisely
- Pick Shore A 50–70 for dynamic sealing; 80+ for static pressure
- Confirm FDA/USP VI certification if for food or pharma
Use this size guide to avoid fitment issues.
Where to buy high-quality silicone O-rings?
I recommend sourcing directly from Hengoseal:
- OEM-grade silicone with full traceability
- Custom sizing available in low MOQs
- Factory-direct pricing with fast global shipping
Browse FDA silicone O-ring options.
Conclusion
Silicone O-rings offer heat resistance, chemical safety, and FDA-grade reliability for sensitive and high-performance applications.
Get FDA-Grade Silicone O-Rings Today
📩 Email: [email protected]
📞 WhatsApp: +86 17622979498
Related post
- Silicone vs NBR: Which One Is Best for Food Applications?
- Buy Silicone O-Rings in Assorted Sizes
- FKM O-Rings for Extreme Heat
- O-Ring Basics Explained
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