Choosing between Silicone and NBR O-rings isn’t just a technical decision—it affects system life, cost, and compliance. So, which one should you choose?
Silicone O-rings are ideal for high heat and sterile environments, while NBR O-rings dominate oil-resistant industrial applications.
Let’s compare the differences and use cases to guide your selection.
What’s the difference between Silicone and NBR O-rings?
Silicone resists heat and UV, while NBR excels with oils and fuels. Your environment determines the right fit.
| Recurso | Anel de vedação de silicone | Anel de vedação NBR |
|---|---|---|
| Faixa de temperatura | -50°C a 250°C | -40°C a 120°C |
| Melhor para | Heat, food, medical | Oil, fuel, hydraulics |
| Resistência química | UV, ozone, dry heat | Oil, fuel, water |
| Custo | Mais alto | Mais acessível |
Explore Silicone O-Ring specs | Learn more about NBR performance
Which O-ring material performs better in heat or oil?
- Usar Anéis de vedação de silicone for high-temperature, sterile, or outdoor conditions.
- Usar Anéis de vedação NBR in fuel, hydraulic, or lubricated environments.
| Propriedade | Silicone | NBR |
|---|---|---|
| Resistência ao calor | ✅ Excellent (up to 250°C) | ❌ Moderate (up to 120°C) |
| Resistência ao óleo | ❌ Pobre | ✅ Excelente |
| Resistência às intempéries | ✅ Excelente | ❌ Pobre |
How do industries apply Silicone and NBR O-rings?
Anéis de vedação de silicone:
- Dispositivos médicos
- Food & beverage systems
- Aerospace assemblies
Anéis de vedação NBR:
- Fuel injection systems
- Cilindros hidráulicos
- Automotive gaskets
Compare NBR to FKM O-Rings for more oil-based solutions.
What factors should you consider before choosing?
Use this simple checklist:
-
Temperatura:
- Over 120°C → Silicone
- Under 120°C → Proceed to step 2
-
Media Exposure:
- Oil/fuel → NBR
- UV, dry heat, ozone → Silicone
-
Cost Sensitivity:
- Budget-critical → NBR
- Long-term performance → Silicone
Need custom specs? Try our Ferramenta para fazer anéis de vedação.
What do customers say about these materials?
- “NBR O-Rings sealed our diesel pumps perfectly.” – Automotive client
- “Silicone survived 200°C sterilization cycles with no cracks.” – Medical OEM
Dica: Usar this guide to understand sealing fundamentals.
Conclusão
Silicone and NBR serve different needs—match material to environment and you’ll seal with confidence.
Choose the right O-ring for your system
📩 E-mail: [email protected]
📞 WhatsApp: +86 17622979498
Related post
PT 
EN 
BN 
AR 
CS 
DA 
DE 
EL 
EO 
ES 
IT 
FR 
ID 
JA 
RU 
ML 
RO 
VI 
UK 
TR 
TH 
KO