ДомПродуктыРезиновые уплотнительные кольцаУплотнительные кольца из НБРOil-Resistant NBR Rubber O-Ring Seals Nitrile O-Rings for Gearbox Pipeline
black rubber o rings
black rubber o rings

Уплотнительные кольца из НБР

Oil-Resistant NBR Rubber O-Ring Seals Nitrile O-Rings for Gearbox Pipeline

1. Material and Color
NBR nitrile rubber O-rings are made from qualified raw materials, available in black or other colors, with a dense cross-section. They offer oil and water resistance, resist swelling and deformation, and provide reliable sealing.

2. Temperature Adaptability
With a temperature range of -40°C to 120°C, they maintain good elasticity at low temperatures and resist hardening and cracking at high temperatures, ensuring stable sealing across a wide temperature range to meet continuous operation needs.

3. Performance Parameters
Compression rate approx. 20%, fill rate approx. 75%, tolerance ±0.05. Uniform stress distribution ensures durable sealing. Low cost and high cost-effectiveness make them suitable for bulk applications.

4. Application Scenarios
With oil resistance, water resistance, and wide temperature adaptability, they are widely used for sealing in automotive engines, gearboxes, fuel systems, and pipeline equipment—economical and practical.

5. Service Life
NBR nitrile rubber O-rings have a normal service life of 5 to 10 years, with the actual lifespan affected by temperature, media, and operating conditions.

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For sealing requirements in fuel systems and pipeline equipment, we recommend a combined solution of fuel-resistant nitrile seals and pressure-resistant rubber gaskets. The NBR rubber gasket has a rated temperature range of -30°C to 120°C, offers oil and water resistance, and resists swelling and deformation. With a compression rate of approximately 20%, a fill rate of about 75%, an outer diameter tolerance of ±0.1mm, and a cord diameter tolerance of ±0.05mm, it provides durable and reliable sealing. The solution is suitable for automotive engines, fuel lines, gearboxes, and chemical pipelines, balancing pressure resistance and cost-effectiveness. It is a high-value NBR rubber sealing solution for the machinery and pipeline industries.

ЭлементСпецификация
Full Material NameNitrile Butadiene Rubber (Butadiene-Acrylonitrile Copolymer)
AbbreviationНБР
Hardness (Shore A)40A–90A
Common Hardness in Market60A, 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%
СтандартыGB/T3452.1, ISO3601-1, AS568, JIS B2401
Совместимые носителиMineral hydraulic oil, engine oil, diesel oil, grease, water, salt water, ethylene glycol antifreeze, normal compressed air
Incompatible MediaBenzene, toluene and other aromatic solvents, ketones, esters, strongly polar solvents, high-temperature steam, concentrated strong acid, long-term ozone exposure
Typical ProductsStandard O-rings, O-ring kits, oil seals, hydraulic sealing parts, pneumatic sealing rings
Сценарии примененияConstruction machinery, excavators, heavy trucks, automobiles, general hydraulic & pneumatic equipment
Основные характеристикиCost-effective, excellent oil resistance, good wear resistance and processability; moderate ozone resistance and weather resistance
NotesAvoid high-temperature steam; ozone environment accelerates aging; keep away from strong solvents

NBR nitrile rubber O-rings are made from qualified raw materials, available in black or other colors, with a dense cross-section. They offer oil and water resistance, resist swelling and deformation, and provide reliable sealing.

NBR nitrile rubber O-rings feature a dense and uniform cross-section, free from air holes, impurities, and porosity defects, with high compound density. The product offers oil and water resistance, resists swelling and deformation, and has a compression rate of approximately 20%, providing durable and reliable sealing for automotive and pipeline equipment applications.

Nitrile rubber sealing O-rings have a smooth, flat surface free from flash, burrs, and overflow residue, with stable dimensional accuracy and a tolerance controlled at ±5. The product ensures smooth assembly and good sealing surface fit, meeting the appearance and performance requirements of international buyers for high-quality O-rings.

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.

  • УпаковкаМы предоставляем стандартные картонные коробки, поддоны и деревянные ящики. По запросу возможна индивидуальная упаковка для надежной защиты товаров при различных видах перевозок.
  • Способы оплаты:Расчеты в нескольких валютах (CNY, USD, EUR и др.). Множество вариантов оплаты, включая банковский перевод (T/T) и PayPal. Для ускорения транзакций в некоторых странах доступен местный банковский перевод.
  • Способ доставки:Мы предлагаем международные экспресс-перевозки, авиаперевозки, морские перевозки и железнодорожные перевозки. Вы также можете назначить собственного экспедитора для гибкой организации доставки.

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.

Часто задаваемые вопросы
  • What sizes and custom specifications do you offer?

    We offer standard sizes as well as custom specifications. You can send us your drawing or specify the inner diameter, cross-section, hardness, and tolerance requirements. Our team will confirm feasibility and provide a quotation promptly.

  • What is your MOQ and delivery lead time?

    MOQ depends on the size and specification of the O-rings. For standard sizes, small trial orders are acceptable. Lead time is typically 7–15 working days after order confirmation, depending on quantity and customization requirements.

  • How do you control the quality of NBR O-rings?

    We use qualified raw materials and mature production processes. Each batch undergoes dimensional inspection (tolerance ±0.05), appearance checks, and performance testing for hardness, compression rate, and oil/water resistance to ensure consistent quality and reliable sealing.

  • What payment terms and shipping methods do you support?

    We support common international payment terms such as T/T and trade assurance orders. Shipping can be arranged by express (DHL, FedEx, UPS), air freight, or sea freight depending on quantity and destination. We will recommend the most cost-effective option for you.

  • What applications are NBR rubber O-rings suitable for?

    NBR O-rings are widely used for sealing in automotive engines, gearboxes, fuel systems, and various pipeline equipment. They are also commonly used in mechanical and chemical equipment, offering an economical and practical sealing solution.

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