NBR Nitrile Rubber O-Rings (CS 1 mm, OD 3–63 mm, Oil‑Resistant)
Introduction
These NBR (Nitrile Butadiene Rubber) O‑rings are versatile, high‑performance sealing components designed for static, reciprocating, and rotating applications in hydraulic, pneumatic, and general‑purpose systems. Manufactured from oil‑resistant nitrile rubber, they provide reliable sealing against petroleum‑based fluids, water, and many common industrial media while offering excellent wear resistance, low friction, and cost‑effective performance. Widely used in automotive, machinery, and hydraulic equipment, they are available in a range of outer diameters and cross‑section sizes to suit nearly any sealing requirement.
Specifications
- Product Name: NBR Nitrile Rubber O‑Ring
- Material: Nitrile rubber (NBR)
- Cross‑Section (CS) / Wire Diameter: 1 mm (additional sizes available: 1.5 / 1.8 / 1.9 / 2 / 2.4 / 2.5 / 2.65 / 3 / 3.1 / 3.5 / 3.55 / 4 / 5 / 5.3 / 5.7 / 6 / 7 / 8.6 / 10 mm, please contact us for other size links)
- Outer Diameter (OD) Range: 3 mm to 63 mm
- Inner Diameter Calculation:
ID = OD − 2 × Cross‑Section (Wire Diameter) - Heat Resistance: Up to 120 °C
- Standards: GB1235‑76 (expressed as Outer Diameter × Wire Diameter); GB3452.1‑2005 (expressed as Inner Diameter × Wire Diameter)
Features
- Excellent Oil & Fluid Resistance: Superior resistance to petroleum‑based oils, fuels, mineral oils, hydraulic fluids, water, and many common industrial solvents.
- Good Mechanical Performance: High wear resistance, tensile strength, and pressure‑handling capability with low dynamic friction for smooth operation.
- Simple, Reliable Design: Compact structure, easy installation, and consistent sealing performance in static, reciprocating, and rotating applications.
- Cost‑Effective & Widely Used: Low‑cost, widely available seals suitable for most standard hydraulic and pneumatic systems.
- Broad Media Compatibility: Works with aliphatic hydrocarbons (propane/butane), engine oils, fuels, vegetable oils, HFA/HFB/HFC hydraulic fluids, and dilute acids/alkalis.
Applications
- Automotive & Transportation: Seals for engines, transmissions, fuel tanks, and lubrication systems, resisting oils, fuels, and hydraulic fluids.
- Hydraulic & Pneumatic Systems: Used in pumps, valves, cylinders, and machinery for sealing hydraulic oil, pneumatic air, and other working media.
- Industrial Machinery & Equipment: Applied in tractors, engineering machinery, mining equipment, machine tools, and metallurgical systems.
- General‑Purpose Sealing: Suitable for static or dynamic sealing in water systems, lubrication tanks, and equipment handling silicone grease, silicone oil, diester lubricants, and glycol‑based fluids.
- Maintenance & Repair: Common replacement seals for fixing leaks in hydraulic presses, pumps, valves, and other industrial components.
Note: Not suitable for use in polar solvents (ketones, MEK, chloroform, nitro hydrocarbons), ozone‑rich environments, or applications requiring high resistance to weathering and heat‑air aging.
