Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of standard competitive nbr oil resistance o rings in China. If you're going to buy standard competitive nbr oil resistance o rings made in China, welcome to get more information from our factory. We also accept customized orders.
Standard Competitive NBR Oil Resistance O-Rings
Introduction
In the demanding world of industrial manufacturing, reliability isn't just a buzzword-it's the baseline. For decades, the Nitrile Butadiene Rubber (NBR) O-ring has stood as the undisputed workhorse of fluid power and mechanical sealing. As a premier manufacturing facility dedicated to precision sealing solutions, we understand that while there are exotic materials for extreme environments, the vast majority of industrial applications require a solution that balances high-performance oil resistance with cost-effectiveness. Our Standard Competitive NBR Oil Resistance O-Rings are engineered to be exactly that: the optimal intersection of durability, chemical resilience, and economic efficiency.
When we speak of "competitive," we aren't just talking about price point. We are talking about a product that competes with, and often outperforms, the industry standard. We have refined our polymer blends and curing processes to deliver an O-ring that maintains its integrity under pressure, resists the degrading effects of petroleum-based fluids, and offers a service life that reduces maintenance intervals. This is a foundational component designed to keep your machinery running, your fluids contained, and your operations profitable.
Product Description
| Product Description | ||
| Products | Name | AS568 Standard Competitive NBR Oil Resistance O Rings |
| Products category | rubber molded product | |
| Material | EPDM,NR,SBR,Nitrile, Silicone, Fluorosilicone, Viton(FKM), Neoprene, Urethane(PU), Polyacrylate(ACM), Ethylene Acrylic(AEM), HNBR, Butyl(IIR), plastic like material (TPE, PU, NBR, silicone, NBR+TPE etc) | |
| Size | All size and thickness available. | |
| Shape | capable of all shapes as per drawing | |
| Color | Natural,black, Pantone code or RAL code, or as per client's samples or requirements | |
| Hardness | 20°~90° Shore A, usually 30°~80° Shore A. | |
| Surface finishing | Texture (VDI/MT standard, or made to client's sample), polished (high polish, mirror polish), smooth, painting, powder coating, printing, electroplating etc. | |
| Drawing | 2D or 3D draiwng in any image/picture format is OK | |
| Free sample | Yes | |
| OEM/OEM | Yes | |
| Application | Household, electronics, for vehicles like GM, Ford, Renault, Honda. Machinery, hospital, petrochemical, Military and Aerospace etc. | |
| Market | Europe, North America, Oceania | |
| Quality certification | ISO 90001:2008, TS16949, FDA, REACH, ROHS, SGS | |
| QC | Every order production will get more than 10 times regular check and 5 fives times random check by our professional QC. Or by Third party appointed by customer | |
| Mold | Molding Process | Injection molding, mold processing, extrusion |
| Mould type | processing mold, injection mold, extrusionmold | |
| Machines | 350T vacuum pressing machine and other pressing machine at 300T,250T and so on | |
| Tooling equipment | Rubber tension tester, Rubber vulcanization instrument, Durometer, calipers, ageing oven | |
| Cavity | 1~400 cavities | |
| Mould Life | 300,000~1,00,000 times | |
| Production | Production capacity | finish each mold of product in 3 minutes and working on 3 shifts within 24 hours |
| Mold lead time | 15~35 days | |
| Sample lead time | 3~5 days | |
| Production time | usually 15~30 days, should be confirmed before order | |
| Loading port | Hangzhou, Shanghai, Ningbo or as required | |
PRODUCT DETAILS
Material Science: The Chemistry of Resilience
At the molecular level, NBR is a copolymer of butadiene and acrylonitrile. The magic lies in the ratio. By precisely controlling the acrylonitrile (ACN) content during the polymerization process, we can tailor the material's characteristics. Higher ACN content increases resistance to oils and fuels but can reduce low-temperature flexibility. Lower ACN content improves flexibility but sacrifices some chemical resistance. Our standard competitive grade utilizes a balanced formulation-typically around 33% to 36% ACN-which provides a "sweet spot" for general-purpose industrial use.
This molecular structure creates a robust barrier against the swelling and degradation caused by aliphatic hydrocarbons. Whether it is mineral oils, vegetable oils, or hydraulic fluids, our NBR compound acts as a steadfast gatekeeper. Unlike generic rubber mixes that might suffer from rapid compression set (where the ring loses its shape and fails to rebound), our formulation is cured to ensure high elasticity. This "memory" is crucial; an O-ring must constantly push back against the sealing surfaces to maintain a leak-tight barrier, even as system pressures fluctuate.
Performance Specifications
Our NBR O-rings are designed to operate effectively within a temperature range of -40°C to +120°C (-40°F to +250°F). This makes them suitable for the vast majority of automotive, hydraulic, and pneumatic applications. In terms of hardness, we typically supply these in a 70 Shore A durometer, which is the industry standard for general sealing. This hardness offers the ideal compromise: it is soft enough to flow into microscopic imperfections on metal flanges and cylinder walls to create a seal, yet hard enough to resist extrusion under significant pressure.
The physical properties of our standard NBR include exceptional tensile strength and tear resistance. In dynamic applications-where the O-ring is moving, such as in a reciprocating hydraulic cylinder-abrasion resistance is key. Our competitive NBR compound is engineered to withstand the friction of constant movement without wearing down prematurely. Furthermore, it exhibits excellent resistance to compression set, meaning that even after being squeezed for long periods, it returns to its original shape when released, ensuring the seal remains intact over the lifecycle of the machine.
Chemical Compatibility and Limitations
Understanding where a material excels is just as important as understanding where it shouldn't be used. Our NBR O-rings are the champions of petroleum-based environments. They are highly resistant to:
Mineral oils and greases.
Hydraulic fluids (HFA, HFB, HFC).
Aliphatic hydrocarbons (propane, butane).
Vegetable and animal oils/fats.
Water (up to a certain temperature limit).
However, transparency is part of our quality assurance. NBR is not recommended for use with ozone, sunlight (UV), or weathering, as these elements can cause the rubber to crack over time. It is also not suitable for polar solvents like ketones, esters, or chlorinated hydrocarbons. For applications involving high heat (above 120°C) or aggressive chemicals, we would recommend upgrading to FKM (Viton) or EPDM, but for standard oil and fuel applications, NBR remains the undisputed king of value.
Manufacturing Precision and Quality Control
In our factory, "standard" does not mean "average." Every batch of NBR compound undergoes rheometer testing to ensure the cure rate is consistent. We utilize advanced compression molding and injection molding techniques to produce O-rings that meet strict dimensional tolerances. We adhere to international standards such as AS568 (USA), BS1806 (UK), DIN 3771 (Germany), and JIS B2401 (Japan).
Post-curing is a critical step in our process. After the initial molding, the O-rings undergo a secondary curing process. This step removes residual volatiles and stabilizes the physical properties of the rubber, ensuring that the part will not shrink or deform later in its life. We also employ flash-freezing or tumble trimming methods to remove excess material (flash) from the molding process, ensuring a smooth surface finish. A smooth surface is essential for sealing, as rough edges can create leak paths or wear out mating metal surfaces.
Applications Across Industries
The versatility of our Standard Competitive NBR O-Rings makes them ubiquitous across various sectors. In the automotive industry, they are found in fuel systems, oil pumps, and shock absorbers. In the realm of heavy machinery, they seal the hydraulic rams on excavators and cranes. In manufacturing plants, they are used in pneumatic tools and conveyor systems.
We also supply these O-rings to the marine industry for sealing non-corrosive fluids and to the food processing industry (using specific white NBR grades compliant with FDA standards) for sealing animal fats and vegetable oils. Whether it is a static seal on a pipe flange or a dynamic seal on a rotating shaft, our NBR O-rings provide the necessary resilience to handle vibration, pressure spikes, and fluid immersion.
Cost-Effectiveness: The Economic Argument
Why choose our Standard Competitive NBR? The answer lies in the total cost of ownership. While the initial purchase price of an NBR O-ring is significantly lower than that of silicone, fluorocarbon, or perfluoroelastomers, its performance in compatible environments is virtually indistinguishable for the lifespan of the machine.
Replacing a seal shouldn't require replacing the budget. By optimizing our supply chain and manufacturing efficiency, we pass the savings on to you without compromising the chemical integrity of the polymer. For maintenance, repair, and operations (MRO) teams, stocking our standard NBR O-rings is a smart logistical move. They cover 80% of general sealing needs, reducing the complexity of inventory management.
Sealing technology is often invisible until it fails. When a seal fails, production stops, fluids spill, and costs skyrocket. Our Standard Competitive NBR Oil Resistance O-Rings are designed to be the silent, reliable guardians of your equipment. We combine decades of polymer expertise with modern manufacturing precision to deliver a product that is tough, resilient, and economically smart. When you choose our NBR O-rings, you aren't just buying a rubber ring; you are buying peace of mind, backed by a factory that understands the science of sealing.
| Order Solution | |
| Order | OEM or ODM welcome. Free sample or slab/button of material for your quality evaluation, mold sample in accordance with drawing for approval of mass production, |
| Payment terms | L/C, T/T, WEST UNION, MONEYGRAM, PAYPAL, ESCROW |
| Lead time | 3~5 weeks for mold production, and 1~2 weeks for mass production |
| Package | As per customer's favour. Shock-absorbing bags, Cartons, Wooden box, and wooden or plastic pallet, |
| Delivery term | FOB CHINA, CIF destination port, DDP customer's warehouse/address of goods |
| Shipment | By air mail, by sea, by express like DHL, Fedex, UPS, TNT, EMS |
| Quality Control | Sample approval before order, and QC test |
FAQ:
Q: Are you manufacturer or trading company?
A: we are manufacturer.
Q: How to get the quickest quotation?
A: send e-mail with drawing directly.
Q: How to get quotation without drawing?
A: possible send sample, pictures or detail descriptions of products to us, we will return you drawing for confirm.
Q: How about sample?
A: free sample is available for your quality evaluation, but you should pay the freight. Regarding customize products, sample and mould order will go first before mass production.
If any needs or questions, pls contact with us freely.
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