Resistant Chemical O-ring
- YiDa
- Dalian,China
- 15-20 days
- 2 billion/year
1. We introduced a high-precision, fully automated CCD optical sorting machine to perform 100% 360-degree inspections on our resistant chemical o-rings, thoroughly detecting even the tiniest air bubbles, impurities, and parting line defects which are hardly visible to the naked eye.
2. Rather than take a one-size-fits-all approach, we provide compatibility solutions that are carefully tailored to the specifics of the chemical media.
3. In chemical applications involving extreme heat and pressure, our tight control over the compression set of our FKM (fluoroelastomer) to ≤20% means that we far exceed the industry average of 25%.
"Sudden Leakage and Downtime" Caused by Material Misselection or Quality Defects
Purchasers in chemical processing operations are most afraid of making a wrong selection of the gauge or material type. For instance, if the O-rings of chemical processing line cannot resist the particular chemical media which are being used in production (like strong acids, strong alkalis or complex solvents), or if the product has internal microscopic bubbles or impurities not visible by naked eye, the seal may swell, harden or crack surprisingly. Such an abrupt leakage can lead to unplanned downtime losses running into hundreds of thousands or even millions, not to mention the hazards that may be caused to the environment and the safety of the workplace.
Yida’s Solutions:
Precision Matching:
Industrial cameras precisely detect and refuse acceptance of the tiniest defects, including surface micro-cracks, internal bubbles, or mold-line protrusions, which are hardly visible to human eyes. This leads to the reduction of sealing risks in extreme environments involving high temperatures and pressures besides guaranteeing long continuous working of the customer's production line.
Precision Adaptation: Industrial cameras can automatically pinpoint and reject even the tiniest defects—like surface micro-cracks, air bubbles trapped inside, and raised parting lines—that are nearly invisible to the human eye, thereby guaranteeing the long-term, uninterrupted functioning of O rings for chemical production lines operating under high temperature and pressure conditions.
It is totally clear to us that the presence of even 1% risk of leakage in the manufacture of chemicals may require a huge safety concern. Yida is a company that focuses on sealing issues especially in very difficult running conditions. Our secret to making sure that the compression set of our FKM (fluoroelastomer) seals is less than 20% and, at the same time, offering your equipment prolonged maintenance-free service with no break even in the most corrosive environments, is a mixture of very accurate formulations and a complete automated optical inspection.
Technical Specifications:
| Attribute Name | Details |
| Processing Service | Cutting/Molding |
| Brand Name | Yida / EDA |
| Model Number | As per the client's drawing |
| Material | EPDM, NBR, FKM (Fluoroelastomer), VMQ (Silicone), PTFE-encapsulated O-rings |
| Hardness Range | Shore A 70±5°; other hardness levels available upon request |
| OEM/ODM Service | Available |
| Color | Standard colors: Brown, Green; custom colors available upon request |
| Operating Temperature | FKM: -40 to +260°C; |
| EPDM: -50 to +150°C; | |
| NBR: -30 to +100°C; | |
| Silicone rubber: -60 to +220°C. | |
| Shape | Customizable shapes available |
| Size | Standard sizes compliant with GB, ASTM, and JIS specifications; capable of manufacturing standard O-rings, flange gaskets, custom-profile sealing rings, and large-scale chemical gaskets. |
| Tolerance Standard | Non-standard customization of inner diameter, cross-section, and thickness; supports punching, cutting, and custom formulations. |
| Quality | Manufactured to customer specifications |
| Design Format | 100% inspection |
| Compression Set | Silicone rubber: 15% - 30% (150°C x 22h) |
| Nitrile rubber (NBR): 20% - 40% (100°C x 22h) | |
| Fluororubber (FKM): ≤ 20% (200°C x 22h) | |
| EPDM: ≤ 20% (125°C x 22h) | |
| PTFE-encapsulated (casing): ≤ 20% (200°C x 22h) | |
| Tensile Strength | Silicone rubber: 5–10 MPa (relatively low strength), |
| Nitrile rubber (NBR): 12–20 MPa, | |
| Fluororubber (FKM): 10–15 MPa, | |
| EPDM: ≥ 10.0 MPa, | |
| PTFE-encapsulated (outer shell): ≥ 15.0 MPa | |
| Elongation at Break | Silicone rubber: 100% – 400% |
| Nitrile rubber (NBR): 200% – 500% | |
| Fluororubber (FKM): 150% – 300% | |
| EPDM: ≥ 250% | |
| PTFE-encapsulated (casing): ≥ 100% | |
| Working Pressure | Static sealing: ≤ 20 MPa (up to 40 MPa with a back-up ring). Dynamic sealing: ≤ 5 MPa. |
| Performance Characteristics | Compatible media: Sulfuric acid, hydrochloric acid, strong alkalis, solvents, aromatics, methanol, and superheated steam. |
| Corrosion resistance: Superior to standard industrial seals; suitable for environments with a pH range of 0–14 (for FFKM or PTFE-encapsulated versions). | |
| Main Application Areas | Suitable for various chemical fluid sealing applications, including chemical piping, valves, reactors, pump casings, filtration equipment, wastewater treatment equipment, petrochemical machinery, pharmaceutical chemical equipment, corrosion-resistant fluid handling equipment, chemical storage tank connections, and complete equipment sets for printing, dyeing, and fine chemical processing. |
| Warranty | Under recommended storage conditions (temperature <30°C, humidity <70%, away from direct light), unopened products are eligible for free replacement if material aging or failure occurs—provided it is not due to human error—within three years of the delivery date and is confirmed upon inspection. The warranty does not cover failures resulting from improper installation or use beyond specified limits. |
| Production Capacity | Monthly production capacity exceeding 300 tons |
| Lead Time | 15 days after order confirmation for standard sizes. Average lead time for prototypes or initial samples is 1–2 weeks; 10 days for mold production if tooling is required; average lead time for mass production is 2–3 weeks after sample approval. |
| Packaging | PE bag inside, carton outside |
| Selling Units | 1 piece |
| Single Package Size | As per the buyer's request |
| Single Gross Weight | As per the buyer's request |
| Shipping Method | By sea, air, or express |
| Port of Loading | Dalian Port, or as per the buyer's request |
| Certificates | IATF 16949 Automotive Quality Management System |
| AS9100D Aerospace Quality Management System | |
| ISO 14001 | |
| ISO 9001 | |
| RoHS 2.0 | |
| REACH | |
| FDA |
Technical Advantages of O-Rings for the Chemical Industry：
R&D: The resource of over 1000 tried-and-tested formulations allows for reverse engineering and duplicating processes in challenging conditions.
Material Control: Two types of controls are used—barcode scanning-based prevention of errors and the purchase of completely imported raw materials—to guarantee batch quality and the same physical properties.
Manufacturing: The teamwork of Makino machining centers and EDM machines operations keeps the mold tolerance level within ±0.005 mm.
Quality Control: The three-layer closed-loop system integrating AI-based inspection at smart level, 2D dimensional method, and thorough manual checking releases strict performance standards CPK, SC, and MSA and results in delivery accuracy at the micro level.
Applications:
Suitable for sealing applications involving chemical fluids in systems such as chemical pipelines, valves, reactors, pump casings, filtration equipment, wastewater treatment equipment, petrochemical machinery, pharmaceutical chemical equipment, corrosion-resistant fluid handling equipment, chemical storage tank connections, and complete systems for printing, dyeing, and fine chemical processing.
About Yida:
Dalian Yida Precision Rubber Products Co., Ltd. has a history dating back to 1993 and was formally set up in 2006. It is a national high-tech enterprise with core rubber technologies, independent R&D, and manufacturing capabilities. It was the first private enterprise in Dalian to be awarded a national-level management achievement award. The company occupies a land area of 57,000 m² and a building area of 36,000 m². Currently, the group consists of six holding companies with a workforce of over 450 people. Besides three production bases in Dalian, China, a factory overseas in Vietnam, and sales and R&D centers in Shanghai and Japan, we have our monthly production capacity from the Dalian bases at 300 tons. Yida supplies world-class sealing products to major global industrial markets continuously, such as the US, Germany, Saudi Arabia, Russia, Japan, and France.
Certifications:
Yida holds certifications including IATF16949, ISO9001, ISO14001, AS9100D, RoHS 2.0, UL, and NSF/WRAS.
Certificate Numbers:
AS9100D & ISO 9001:2015
Partners:
Yida has now taken the lead to supply high-quality products and outstanding services to global industrial sectors of manufacturing, automation control, new energy, electrical equipment, and automotive components. We have made ourselves a part of the long-term developments of famous foreign enterprises. Our customers are from different industries - from car electronics, industrial automation, smart manufacturing, new energy, power equipment, fluid control, and many others. Our main clients are: Delphi Technologies, Alpine Electronics, Nidec, Siemens, Panasonic, Omron, SMC Corporation, CATL, China Electric Equipment Group, and Rongke Power.
After-sales Commitment:
We provide an additional 3-year warranty for our products.
Within the recommended storage conditions (temp. <30°C, humidity <70%, not exposed to direct light), if an unopened product undergoes material degradation or failure within three years from the delivery date, upon testing confirmation Yida will supply a full free replacement.
Exhibition Highlights:
2025 Dalian International Industrial Expo
On a theme of "Digital-Intelligent Sealing," Yida exhibited high-performance rubber materials that can operate under complicated conditions changes in a digital manufacturing environment and held discussions with 900 international industrial companies on supply chain partnership.
2025 Shanghai Long-Duration Energy Storage Expo
In line with the global "Dual Carbon" objectives, we spotlighted extended-life sealing products mainly intended for the next-gen power systems; these are capable of withstanding extreme temperatures as well as chemicals and hence are very efficient in solving the problem of maintaining airtightness in energy storage systems that are forced to operate in hostile environments.
