Choosing the right rubber sealing material is not just about performance — it’s about ensuring the long-term stability and reliability of your equipment. As an experienced Chinese exporter of rubber seals like O-rings, oil seals, bonded washers, and PU dust wipers, we’ve helped clients across industries make the right material decisions.
Here are the top factors we help our customers consider when selecting sealing materials:
🔍 1. Operating Conditions Define Material Choice
Different working environments require different types of rubber:
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High temperature → FKM (Viton®) or Silicone (VMQ)
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Low temperature → NBR or Silicone
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Oil/fuel contact → NBR or FKM
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High pressure → High-hardness compounds or reinforced designs
✅ We help clients match the rubber type to their application — ensuring durability and performance.
📏 2. Balance Between Hardness & Elasticity
Hardness (measured in Shore A) affects sealing and compression behavior:
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60–70 Shore A → Ideal for general hydraulic/pneumatic systems
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Higher hardness → Better under pressure, but less flexible in cold
We provide guidance based on your system’s pressure and motion type.
🔄 3. Compression Set Resistance
Rubber seals are often under long-term compression. If the material can’t recover, sealing failure may occur.
We test our materials under heat and oil immersion to ensure excellent compression set resistance.
🛢️ 4. Oil Resistance & Chemical Compatibility
Seals in engines or hydraulic systems often face harsh oils. We offer NBR, HNBR, FKM and more — with detailed compatibility charts — to help you avoid material swelling, shrinking, or hardening.
❄️ 5. Low-Temperature Performance
In cold climates (North America, Europe), seals must remain elastic. We evaluate materials using:
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TR10 / TR70 (temperature rebound tests)
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Brittleness temperature tests
Our seals stay flexible even in freezing conditions.
🤝 Why Work with Us?
As a specialised rubber seal exporter from China, we offer:
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✅ Free material recommendations
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✅ OEM sizing and custom compounds
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✅ Rapid prototyping with international delivery
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✅ Full test reports available
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✅ English-speaking support and fast response
💡 Need help selecting the right rubber material?
Contact our export team for a free consultation and samples.
📩 info@oilsealfactory.com
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