•NBR rubber seals with compression rate controlled within 25%, featuring oil and pressure resistance for machinery hydraulic systems.
•Manufactured to AS568 standard, Shore A hardness 75 with tolerance ±5.
•NBR O-rings operate reliably at temperatures ranging from -40℃ to 120℃.
•Reliable sealing performance under oily and pressurized working conditions.
NBR Rubber O-Rings are made of nitrile rubber (NBR) material with a black appearance. With a temperature range covering -40°C to 120°C, they offer both oil resistance and water resistance, maintaining reliable sealing performance in oil and water media. These O-shaped rubber sealing rings are commonly used in automotive and pipeline equipment.
The NBR-O rubber O-ring features a compression rate of approximately 20%, a fill rate of about 75%, and a tolerance of ±5. After assembly, it provides uniform stress distribution and durable sealing performance without easy permanent deformation. Backed by mature formulations and processes, these nitrile rubber sealing rings are cost-effective and offer excellent value for money, making them suitable for bulk applications.
With the advantages of oil resistance, water resistance, and wide temperature adaptability, this black O-ring rubber seal is widely used, mainly for sealing positions in automotive engines, fuel systems, and various pipeline equipment. It is an economical and practical O-ring sealing solution for the automotive and pipeline industries.
| Элемент | Спецификация |
|---|---|
| Full Material Name | Nitrile Butadiene Rubber (Butadiene-Acrylonitrile Copolymer) |
| Abbreviation | НБР |
| Hardness (Shore A) | 40A–90A |
| Common Hardness in Market | 60A, 70A, 80A (70A widely used for construction machinery) |
| Continuous Operating Temperature | -30℃ ~ +120℃ |
| Short-term Peak Temperature | +135℃ |
| Compression Set (100℃ × 72h) | ≤25% |
| Предел прочности | ≥12 MPa |
| Elongation at Break | ≥300% |
| Стандарты | GB/T3452.1, ISO3601-1, AS568, JIS B2401 |
| Совместимые носители | Mineral hydraulic oil, engine oil, diesel oil, grease, water, salt water, ethylene glycol antifreeze, normal compressed air |
| Incompatible Media | Benzene, toluene and other aromatic solvents, ketones, esters, strongly polar solvents, high-temperature steam, concentrated strong acid, long-term ozone exposure |
| Typical Products | Standard O-rings, O-ring kits, oil seals, hydraulic sealing parts, pneumatic sealing rings |
| Сценарии применения | Construction machinery, excavators, heavy trucks, automobiles, general hydraulic & pneumatic equipment |
| Основные характеристики | Cost-effective, excellent oil resistance, good wear resistance and processability; moderate ozone resistance and weather resistance |
| Notes | Avoid high-temperature steam; ozone environment accelerates aging; keep away from strong solvents |
High-performance nitrile rubber (NBR) O-ring seals are suitable for static and low-speed dynamic sealing conditions, with stable and reliable sealing performance.
This product boasts excellent oil resistance, being compatible with mineral-based hydraulic oil, diesel, and various lubricating greases; it also has good water resistance, suitable for freshwater, salt water, and ethylene glycol-based antifreeze solutions and other medium environments; it also exhibits good chemical stability towards mild corrosive media such as weak acids and weak alkalis. Its compression permanent deformation rate is low and its resilience is excellent, effectively preventing fluid leakage.
It is widely used in hydraulic systems, automotive components, and industrial machinery and equipment, supporting ISO standard specifications and customer customized requirements.
NBR O-ring provides stable leak-proof sealing for static and dynamic applications.
NBR O-ring resists mild corrosion from weak acid and weak alkali.
NBR O-ring features great oil resistance against mineral oil and grease.
NBR O-ring works reliably in fresh water, salt water and antifreeze.
NBR O-rings, also called nitrile rubber seals, are widely adopted across numerous industrial sectors, including construction machinery, excavators, heavy trucks, automobiles, hydraulic and pneumatic equipment, petroleum, general manufacturing, chemical and power systems.
Компания Jinnai Seal предлагает индивидуальные решения по резиновым уплотнениям, разработанные с учетом разнообразных промышленных потребностей. Наши услуги по индивидуальной настройке охватывают резиновые материалы, размеры, формы и конструкции, цвета, твердость, обработку поверхности, разработку пресс-форм и упаковку. Мы поддерживаем как стандартные спецификации, так и изготовление на заказ по вашим чертежам, образцам и требованиям к применению, поставляя гибкие и надежные уплотнительные изделия для широкого спектра отраслей промышленности.
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