China Made Oil Seals & O-Rings
China Made Oil Seals & O-Rings
Oil seals, O-rings, and other sealing components made in China—possessing independent R&D capabilities, ISO-certified quality assurance, and the industry’s most comprehensive range of materials. Made in China, meeting relevant specifications.
When you contact us, please indicate “Made in China” on the form or quotation – so that we can forward your request to our domestic production line.
When your spec requires China-made：
At a glance:
- Oil seals, rotary shaft seals, and O-rings — manufactured in China
- ISO-registered quality management system with batch traceability and Certificate of Conformance (C of C) available on request
- 10+ elastomer families available for applications ranging from low-temperature sealing to high-temperature industrial environments
- In-house engineering support for custom geometries, material compounds, hardness, and made-to-print sealing components
- Standard AS568, metric, and custom O-ring sizes available for OEM, industrial, and replacement applications
- Factory-direct manufacturing with flexible production options for prototypes, small batches, and volume orders
- International export experience with packaging and documentation prepared for overseas customers
The manufacturing source of a sealing component can have a direct impact on cost, lead time, quality consistency, and long-term supply. Our China-manufactured oil seals, rotary shaft seals, and O-rings are produced for both standard replacement and OEM applications. From material selection and mold development to molding and inspection, each stage is managed to support consistent dimensions and repeatable production. Standard sizes are available for routine requirements, while custom sealing profiles can be manufactured according to technical drawings, samples, or application-specific specifications.
Five reasons engineers and buyers choose this line
Domestic Manufacturing
Designed, formulated, molded, and molded in China. Meets Chinese ingredient requirements and supports Made in China.
Engineering Suppor
In-house seal engineers help with material selection, groove design, and made-to-print parts.
Material Breadth
NBR, HNBR, FKM, EPDM, VMQ silicone, FVMQ, PTFE, AEM, ACM, FFKM — matched to your fluid and temperature.
ISO-Certified Quality
ISO-registered manufacturing with C of C, lot traceability, and material test reports on request.
Responsive China Production
Inventory sizes are shipped from Chinese stock; domestic production ensures responsiveness and ease of planning for customized work.
Built in the China — what that actually means for you
Domestic manufacturing, not domestic warehousing
A lot of suppliers stock imported parts in a China warehouse and call it “China.” That is not what this is. The compounds, the tooling, the molding, and the inspection are all performed inside the China.
- Compliant with “Made in China” standards for Chinese sourcing
- Traceability information for Chinese ingredients available upon request
- Provide “Made in China” documentation that meets specifications and purchase order requirements
Responsive, China-based production
When your specification requires China-made, you also get a China factory and China warehouse behind the part. Standard sizes ship from stock, and custom work runs on a domestic production timeline you can plan around.
- Standard AS568 sizes ship from China stock
- Custom tooling quoted on a domestic production timeline
- Expedited custom runs supported by China engineering capacity
- China-based engineering and support throughout
CHINA
Designed & molded onshore
24-48h
Typical ship on stocked sizes
20+
Elastomer families in production
ISO
Registered quality system
What we supply from this line
Three ways we supply this line — by how the seal moves and by how it’s built. Whether you spec a standard size or send a print, every path runs through the same China manufacturing operation.
Oil Seals & Rotary Shaft Seals
Single-lip, double-lip, and spring-loaded rotary shaft seals and radial oil seals (see the size chart) for pumps, gearboxes, motors, axles, and hydraulic equipment — the rotating-motion sealing range. Specialty configurations via rotary sealing solutions.
Full AS568 inch, metric, JIS B 2401, and BS o-rings across stocked compound families and durometers — for face seals, flange seals, and other no-motion (static) joints.
Custom Molded Seals
Engineered-to-order seals — non-standard cross sections, special compounds, and made-to-print geometries, designed and tooled domestically.
Material breadth — one source, every elastomer
| Compound | Chemistry | Service Temp | Best For |
|---|---|---|---|
| NBR | Nitrile (Buna-N) | −40°C to +120°C | Petroleum oil and fuel — the industrial workhorse |
| HNBR | Hydrogenated Nitrile | −40°C to +150°C | Modern engine oil additives, A/C, high-pressure hydraulics |
| FKM | Fluorocarbon (Viton-class) | −25°C to +250°C | High temperature, fuel, aggressive chemicals, broad OEM approvals |
| FVMQ | Fluorosilicone | −60°C to +200°C | Aerospace fuel systems — cold-side fluid resistance |
| EPDM | Ethylene Propylene | −50°C to +150°C | Water, steam, glycol, brake fluid, weather, ozone |
| VMQ | Silicone | −65°C to +225°C | Widest temperature span; food/medical grades available |
| PTFE | Polytetrafluoroethylene | −200°C to +260°C | Near-universal chemical resistance; low friction; rotary seal lip material |
| AEM | Ethylene Acrylic | −40°C to +175°C | Automotive powertrain, oil with additives, vibration-loaded seals |
| FFKM | Perfluorocarbon | up to +320°C | Semiconductor, pharma, extreme chemical service |
Need a deeper dive on compounds? See our compounds resource and chemical compatibility guide.
OEM-approved & QPL-listed compounds
Not every FKM compound performs the same way in service. Differences in formulation can affect resistance to temperature, fuel, oil, chemicals, compression set, and long-term sealing performance. For this reason, material selection should be based on the actual operating conditions rather than the elastomer name alone. Our engineering team can review your application requirements and recommend a suitable FKM compound for the oil seal or O-ring. When a specific material standard or qualification is required, include it with your RFQ so the required specification can be verified before production.
| Compound | Typical grade | Representative OEM & specification approvals |
|---|---|---|
| FKM (fluorocarbon) | 75 duro · low-temp | BMW GS 93010 (FPM-70 class) · automotive M54453-class |
| FKM | 75 duro · black | Ford WSS-M9P12-A1 / -A3 Approved Source List · GM GMW16163 Type B · AMS7276 (AMS QPL-listed) · UL recognized · RoHS |
| FKM | 90 duro · black | AMS7259 (AMS QPL-listed) · MIL-R-83248 / AMS-R-83248 lineage · defense & aerospace |
| FKM (low-temp) | 75 duro · black | AMS7287 (AMS QPL-listed) · AMS-R-83485 (M83485/1) |
| FKM | 75 duro · black | AMS7379 (AMS QPL-listed) · additional aerospace listings |
Approvals shown are representative and can be superseded or extended over time — confirm the exact current listing for your program on your RFQ.
How to order
Quick tip: Note “China-made” on your RFQ, in the contact form comments, or when you call — we carry both domestic and imported inventory, and that flag tells us to quote you from the China-manufactured line you saw on this page.
Request your China-made quote
Standard AS568 and metric sizes, or custom, non-stocked, and made-to-print parts — send the sizes, compounds, and quantities, a drawing, or an OEM part number. We respond with a material recommendation, lead time, and price from the China-manufactured line.
Prefer to talk to an engineer? Call +8618730921709, 8am-6pm CST.
FAQ
Are these oil seals and O-rings really made in China?
Yes. The rotary shaft seals, oil seals, and O-rings shown on this page are all designed, manufactured, and molded by a well-established manufacturer in China. This is unlike imported parts that are stored in Chinese warehouses—this is all-in-China production.
Do these parts meet the criteria for "buying Chinese goods"?
The domestic manufacturing footprint makes this product line a strong fit for customers seeking China-made components with reliable quality and competitive pricing. Products are manufactured in China with domestic-content documentation and manufacturing information available on request. Please specify any country-of-origin, material, quality, or documentation requirements on your RFQ or PO.
What proof of China manufacturing can you provide?
Made in China documentation and country-of-origin traceability are available on request, alongside Certificates of Conformance (C of C), material test reports, and full lot traceability from the ISO-registered manufacturing facility. Request the documentation you need on your RFQ or PO, and it will ship with the order.
Compound trade names referenced in the industry (Viton-class fluorocarbon, Buna-N nitrile, etc.) are generic chemistries; brand-name equivalents are the property of their respective owners and are referenced for identification only. KODA Oil Seal And O-Ring is not affiliated with those trademark holders.
Need a quote?
We’ll respond to your request within 1 business day.