LarProdutosAnel de vedação de borrachaAnéis de vedação NBROil-Resistant NBR Rubber O-Ring Seals Nitrile O-Rings for Gearbox Pipeline
black rubber o rings
black rubber o rings

Anéis de vedação NBR

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.

ItemEspecificação
Full Material NameNitrile Butadiene Rubber (Butadiene-Acrylonitrile Copolymer)
AbbreviationNBR
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%
Resistência à tracção≥12 MPa
Elongation at Break≥300%
PadrõesGB/T3452.1, ISO3601-1, AS568, JIS B2401
Compatible MediaMineral 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
Cenários de aplicaçãoConstruction machinery, excavators, heavy trucks, automobiles, general hydraulic & pneumatic equipment
Principais característicasCost-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.

  • PacoteFornecemos caixas de papelão, paletes e caixas de madeira padrão. Embalagens personalizadas estão disponíveis mediante solicitação para proteger adequadamente as mercadorias em diferentes tipos de envio.
  • Métodos de pagamento:Pagamento em múltiplas moedas (CNY, USD, EUR, etc.). Diversas opções de pagamento, incluindo T/T e PayPal. Transferência bancária local disponível para alguns países para transações mais rápidas.
  • Método de entrega:Oferecemos transporte expresso internacional, aéreo, marítimo e ferroviário. Você também pode indicar seu próprio agente de carga para maior flexibilidade nas entregas.

A Jinnai Seal oferece soluções personalizadas de vedação em borracha, adaptadas a diversas necessidades industriais. Nossos serviços de personalização abrangem materiais de borracha, dimensões, formatos e designs, cores, dureza, acabamentos superficiais, desenvolvimento de moldes e embalagens. Atendemos tanto especificações padrão quanto fabricação sob medida, com base em seus desenhos, amostras e requisitos de aplicação, fornecendo produtos de vedação flexíveis e confiáveis para uma ampla gama de indústrias.

Perguntas frequentes
  • 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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