**High Fuel Resistant NBR Rubber O-Ring for Hydraulic Seal**
Here are the key specifications of our high fuel-resistant NBR rubber O-ring:
- **Model No.:** Metric standard
- **Size:** 30 mm ID x 3 mm C/S
- **Color:** Black
- **Certificate:** ISO9001, ISO14001, and RoHS
- **Main Market:** North America, Europe, Southeast Asia
- **Operational Temperature Range:** -40°C to 121°C
- **Hardness Range:** 40–90 Shore A
- **Standard Hardness:** 70 Shore A
- **Tensile Strength Range:** 200–3000 psi
- **Maximum Elongation:** >300%
- **Sample Time:** 3–7 days
- **Trademark:** SHEDL
- **Transport Package:** 10,000 pcs / Plastic Bag, 10 Bags / Carton
- **Specification:** 45x28x20 cm
- **Origin:** Quanzhou, Fujian, China
- **HS Code:** 40169390
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### Product Details
| **Material** | NBR/Nitrile/Buna |
|--------------|------------------|
| **Color** | Black |
| **Size** | 30 mm ID x 3 mm C/S |
| **Hardness** | 70 Shore A (depending on environment) |
| **Service** | OEM or ODM |
| **Production Basis** | Samples or drawings |
| **Technology** | Mold Compression |
| **MOQ** | 10,000 pcs |
| **Working Life** | 3–6 years |
| **Sample** | Free from stock |
| **Application** | Pumps, drive belts, general engineering in hydraulic and pneumatic systems |
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### How to Measure an O-Ring
To ensure the correct size and performance of an O-ring, it's essential to measure it accurately. The most common way is to measure the inner diameter (ID), outer diameter (OD), and cross-section (C/S). For this product, the size is 30 mm ID x 3 mm C/S.
> [Image: How to measure an O-ring]
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### About NBR / Nitrile / Buna Rubber
#### Temperature Range
- **Recommended:** -20°C to +90°C
- **Intermittent Use Up to:** 90°C
- **Minimum Operating Temperature:** -30°C
#### Chemical Resistance
- Hydrocarbons
- Fats
- Oils & Gasoline
- Petroleum-based hydraulic fluids (HFD-R)
#### Not Compatible With:
- Ozone
- Esters
- Retones
- Aldehydes
- Chlorinated compounds
- Nitro hydrocarbons
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### Testing Equipment
> [Image: Testing equipment for O-rings]
> [Image: Quality control process]
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### Company Information
Quanzhou Shengda Rubber Products Co., Ltd. has been specializing in manufacturing various types of O-rings, rubber seals, and rubber well nuts for over 10 years. Our main markets include North America, Europe, and Southeast Asia. We accept sample orders or trial orders, and we have passed ISO9001, ISO14001, and ROHS certifications. We also hold our own import and export license.
> [Image: Factory view]
If you're looking for a reliable supplier of high fuel-resistant NBR rubber O-rings, we are here to help. Contact us today!
**Contact Person:** Lana Feng
**Email:** [Insert Email]
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Let us provide you with the best quality and service in the industry!
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