About Product

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Target Markets: Automotive, hydraulic/pneumatic, machinery, MRO - Maintenance, Repair, and Operations

Comprehensive Standard Compliance: Manufactured to international standards including AS568 (USA), JIS B2401 (Japan), DIN 3771 (Germany), and ISO 3601

High-Performance Material Grade: Available in NBR (High-Nitrile), FKM (Genuine Viton), and Silicone, catering to temperature ranges from -60°C to +250°C

Exceptional Media Resistance: Designed to withstand harsh industrial fluids, including hydraulic oils, fuels, solvents, and various chemical reagents

Zero-Defect Surface Quality: Advanced vacuum compression molding ensures a smooth finish with no parting line flashes or air bubbles, preventing premature seal failure

Low Compression Set: Optimized vulcanization process ensures the O-ring maintains its shape and sealing force under continuous pressure

 

About Us

Xiamen Maihua Rubber Products Co., Ltd. is a leading global supplier of sealing solutions with 29 years of experience. Covering 60,000 square meters, it produces over 2500 tons of rubber materials monthly. Certified with ISO9001/ISO14001 and multiple international standards, it offers food-grade and high-performance seals for diverse industries.

                

FAQs

What's the payment term

We accept T/T 30% deposit and 70% balance against copy of B/L or L/C at sight, West Union, VISA, Paypal is also accepted

What is the normal lead time for product orders

Average lead times for prototype / first article are 1-2 weeks, if tooling is involved, lead time for production tooling is 10 days, average production time after sample approval is 2-3 weeks

What is your standard packing

All the goods will be packed by carton box and loaded with pallets. Special packing method can be accepted when needed

Could you please tell us the month capacity of your products

It depends on which model, we produce more than 2500 tons rubber materials per month

What kind of certificates you have

We have been ISO9001:2008 and ISO14001:2004 certified by S G S since 2005. We have various rubber compounds approved by U L, F D A, NSF, KTW, W270, WRAS, ACS, AS4020, EN681, EN549, ROHS and REACH

How to check the quality of the bulk order

Provide preproduction samples before mass production for all customers if needed. We provide quality certs such as measurement report, material data sheet, COO, COA, etc. to all customers before delivery. Accept third party inspection such as S G S, TUV, INTERTEK, BV, etc

How to select the raw compound for my application

With years of experience working with a variety of material, we can help select the material that will best suit your needs while keeping material costs in mind

Do you use any international standards for the rubber products

Yes, we mainly use ASTM D2000 standard to define the quality of the rubber materials, tolerances as per ISO3302, ISO2768, etc

Maihua presents a comprehensive line of high-performance small O-rings tailored for demanding industries: MAIHUA Fujian Rubber Custom Non-Standard FKM Buna-N NBR Buna FPM FFKM 70A Small O-Rings Aerospace Automotive Food-Grade. Our product line is engineered to meet strict sealing requirements in aerospace, automotive, and food-grade applications. Designed for reliability, durability, and adaptability, these seals are an essential component in modern systems where failure is not an option.

Product overview and material options

Maihua’s small O-rings are available in a broad range of elastomer compounds to satisfy diverse environmental and regulatory needs. Options include FKM O-rings crafted from fluorocarbon elastomers for exceptional chemical resistance and high-temperature stability; NBR seals—commonly known as Buna-N—that provide excellent oil and fuel resistance; food-grade Buna-N formulations that meet sanitation and safety standards; FPM variants optimized for long-term performance; and advanced FFKM aerospace-grade Perfluoroelastomer O-rings engineered for the most extreme service conditions. Our portfolio covers shore hardness such as 70A and custom Durometers to balance resilience and compression set resistance.

Key features and technical advantages

Maihua small O-rings deliver several technical advantages that set them apart:

- Chemical compatibility and media resistance: FKM O-rings resist aggressive chemicals, fuels, and lubricants, making them ideal for hydraulic, fuel, and chemical handling systems. NBR seals (Buna-N) provide proven compatibility with petroleum-based oils and fuels, ensuring long-term service in automotive and industrial environments. Food-grade Buna-N compounds comply with food contact requirements while retaining NBR seals’ mechanical properties. FFKM aerospace O-rings offer near-universal chemical resistance and reduced permeability for critical aerospace sealing tasks.

- Temperature range and thermal stability: Our FKM O-rings handle elevated temperatures without rapid degradation, extending service life in hot environments. NBR seals function efficiently across typical automotive and industrial temperature ranges, while food-grade Buna-N blends are formulated for thermal stability where food processing requires both cleanliness and durability. FFKM aerospace materials sustain performance at extreme temperatures, supporting aerospace applications where thermal cycling is routine.

- Low compression set and long service life: Maihua’s compound formulations and molding precision minimize compression set, maintaining sealing force over many cycles. This reduces maintenance intervals and downtime in automotive assemblies, aerospace systems, and food processing equipment. Low compression set is critical to ensure consistent leak-tight performance, and our NBR seals, FKM O-rings, and FFKM aerospace parts are optimized for longevity.

Applications and industry use cases

Maihua O-rings serve a wide array of sectors:

- Aerospace: FFKM aerospace O-rings and FKM O-rings are ideal for aircraft fuel systems, hydraulic actuators, and environmental control components. The low permeability and exceptional chemical resistance of FFKM aerospace compounds make them suitable for mission-critical seals where failure can have catastrophic consequences. FKM O-rings offer a cost-effective option for many aerospace subcomponents while maintaining high performance.

- Automotive: NBR seals and FKM O-rings support engine, transmission, fuel delivery, and braking systems. NBR seals are widely used in fuel systems and oil handling due to their compatibility with hydrocarbons, while FKM O-rings offer superior heat and fluid resistance for turbocharger seals and engine compartments. Maihua’s custom non-standard sizes enable compact modern automotive designs without compromising seal integrity.

- Food and beverage: Food-grade Buna-N O-rings are formulated to meet hygiene and safety standards in food processing, bottling, and handling equipment. They resist oils and fats encountered in food production, deliver reliable sealing in wash-down environments, and are compatible with industry cleaning agents. Their mechanical robustness and regulatory compliance make Maihua’s food-grade Buna-N O-rings a practical choice for processors seeking dependable seals.

Manufacturing excellence and quality control

Maihua applies strict quality control procedures during material selection, molding, and post-processing. Each batch of FKM O-rings, NBR seals, FFKM aerospace parts, and food-grade Buna-N rings undergoes dimensional inspection, hardness verification, and physical property testing. Our manufacturing environment is designed to maintain cleanliness and consistency to deliver seals that meet or exceed customer specifications. Custom tooling and precision molding processes ensure tight tolerances and excellent surface finish, reducing friction and abrasion in dynamic applications.

Innovation and engineering support

Maihua’s engineering team works closely with customers to optimize seal design for performance and cost. We provide guidance on material selection—choosing between FKM O-rings, NBR seals, FFKM aerospace elastomers, or food-grade Buna-N—based on media exposure, temperature range, and mechanical demands. Our R&D focuses on compound improvements to reduce compression set, enhance abrasion resistance, and broaden operational temperature ranges. Through finite element analysis and prototyping, Maihua helps validate seal performance before full production.

Ordering, customization, and delivery

Customers can order standard sizes or request custom, non-standard dimensions and Durometers. Maihua supports short lead prototyping and high-volume production runs with consistent quality. We offer material traceability and test documentation upon request. For food-grade Buna-N and critical aerospace applications, Maihua provides certification packages to support customer regulatory compliance and procurement needs.

Why choose Maihua

Choosing Maihua ensures access to a versatile selection of sealing solutions: robust FKM O-rings for chemical and thermal challenges; dependable NBR seals (Buna-N) for oil and fuel systems; certified food-grade Buna-N compounds for hygienic processing environments; and high-reliability FFKM aerospace O-rings for the most demanding applications. Maihua combines material expertise, precision manufacturing, and responsive engineering support to deliver seals that perform and last.