Import Flexible Expanded Graphite Ring — Buy in wholesale FOB from Supplier in China
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Flexible Expanded Graphite Ring
The Flexible Expanded Graphite Ring from Sungraf Material Group Limited is manufactured from expanded natural graphite flakes with a carbon content of 98% to 99.5%. These rings are designed as dynamic sealing elements for high-temperature, high-pressure environments where metallic seals fail due to thermal expansion or chemical attack. The material retains flexibility while resisting degradation in aggressive media.
Expanded graphite is produced by intercalating and rapidly heating natural flake graphite, creating a worm-like structure with high compressibility and low density. The resulting rings are typically uncoated and free of binders, preserving purity and thermal stability. Standard grades include industrial purity and high-purity variants, with the latter used in semiconductor and pharmaceutical applications where contamination must be minimized.
These rings are commonly installed in valve stems, pump shafts, and flange joints across chemical processing, oil and gas, and power generation industries. Buyers include seal manufacturers, maintenance contractors for refineries, and OEMs of rotating equipment. Packaging is in sealed cartons or wooden cases with desiccants to prevent moisture absorption. Trade terms include FOB Qingdao or Shanghai, with lead times typically 20 to 30 days.
| Base Material | Expanded natural graphite flakes |
| Carbon Content | 98% to 99.5% |
| Density | Typical 0.3 g/cm³ to 0.7 g/cm³ |
| Compressibility | Typical 15% to 30% under 20 MPa load |
| Thermal Conductivity | Typical 100 W/m·K to 150 W/m·K along the plane |
| Operating Temperature Range | Typical -200°C to 3000°C in inert atmosphere, up to 450°C in oxidizing environments |
| Chemical Resistance | Resistant to most acids, alkalis, solvents, and molten metals except strong oxidizers |
| Thickness Tolerance | Typical ±0.05 mm for rings under 5 mm thickness |
| Purity Grade | Industrial purity or high-purity (typical impurities < 0.5%) |
| Packaging | Sealed cartons with desiccant or wooden cases for export |
Sungraf Material Group Limited is located in Shibei District, Qingdao, Shandong, and specializes in the production of expanded graphite-based sealing products. The company holds harbor-tier trust status, indicating verified export registration and operational history. No information is provided on workforce size, certifications, or client list beyond general industrial applications.
The listing states no response rate or average response time, suggesting limited buyer communication capacity. There is no mention of in-house testing facilities, R&D capabilities, or custom design services. The company's focus appears confined to manufacturing and exporting standard graphite rings, with no indication of technical support or application engineering.
Flexible Expanded Graphite Rings are high-performance industrial sealing components manufactured from expanded natural graphite flakes, offering exceptional resistance to extreme temperatures, chemicals, and pressure. Widely used in pump shafts, valve stems, and flange joints across chemical processing, oil and gas, power generation, and petrochemical industries. These rings provide superior thermal conductivity and self-lubricating properties, making them ideal for dynamic sealing applications. They are available in various grades including industrial purity and high-purity graphite compositions, and are typically packed in cartons or wooden cases for secure export handling.
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Sourcing Flexible Expanded Graphite Ring from Sungraf Material Group Limited - China Import Guide
Before ordering, confirm the carbon content percentage and purity grade (industrial vs. high-purity) with the supplier. Request a material certificate showing ash content and trace impurity levels, especially if used in food, pharmaceutical, or semiconductor applications. Verify that the rings are binder-free and uncoated unless a composite is explicitly required.
Confirm Incoterms - FOB Qingdao or Shanghai is typical. Lead time is usually 20 to 30 days, but may extend during peak production seasons. Payment terms are often 30% advance, balance against BL copy. Ensure packaging includes desiccant to prevent moisture absorption, as graphite can swell if exposed to humidity before installation.
Inspect incoming rings for surface integrity - look for cracks, delamination, or visible impurities. Measure thickness with a micrometer at multiple points to ensure tolerance compliance. For critical applications, perform a compression test using a calibrated press and compare results to the supplier's datasheet. Retain batch records for traceability and failure analysis.
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14 listingsTop Verified Suppliers for Flexible Expanded Graphite Ring
30 suppliersBuy Flexible Expanded Graphit in Bulk — Verified Supplier in China
When sourcing Flexible Expanded Graphite Ring for your business, securing the right balance of quality and cost is essential. Sungraf Material Group Limited, a verified supplier based in China, offers this product with key specifications including Flexible Expanded Graphite Ring, Carbon 98-99.5%, Ash <1.5%, and Customizable ID/OD; Standard sizes ranging from 10mm to 500mm. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $38/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 6815.10, making it a staple in the Graphite sector with strong demand from importing countries worldwide.
Flexible Expanded Graphit Specifications, Trade Terms & Pricing
Importing Flexible Expanded Graphit requires careful attention to shipping logistics, customs compliance, and secure payment terms. Sungraf Material Group Limited offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 6815.10 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading online B2B marketplace designed to make cross-border trade secure and efficient.
About Sungraf Material Group Limited — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Flexible Expanded Graphit has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Graphite category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Import Flexible Expanded Graphit — Shipping, Logistics & Customs
Importing Flexible Expanded Graphit requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 6815.10 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Flexible Expanded Graphit
What is the wholesale price of Flexible Expanded Graphite Ring?
The current listed wholesale price for Flexible Expanded Graphite Ring from Sungraf Material Group Limited is $38/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Sungraf Material Group Limited through EximNext.
What is the Minimum Order Quantity (MOQ) for Flexible Expanded Graphit?
The supplier, Sungraf Material Group Limited, has set a Minimum Order Quantity (MOQ) of 1 Bags for Flexible Expanded Graphit. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Flexible Expanded Graphite Ring?
For international shipping and customs clearance, Flexible Expanded Graphite Ring is classified under HS Code 6815.10. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Flexible Expanded Graphit from China?
To import Flexible Expanded Graphit from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Sungraf Material Group Limited. Ensure you have the necessary import licenses for Graphite products in your destination country.
Is Sungraf Material Group Limited a verified supplier?
Yes, Sungraf Material Group Limited is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Flexible Expanded Graphite Ring?
The key specifications for Flexible Expanded Graphite Ring supplied by Sungraf Material Group Limited include Flexible Expanded Graphite Ring, Carbon 98-99.5%, Ash <1.5%, and Customizable ID/OD; Standard sizes ranging from 10mm to 500mm. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Flexible Expanded Graphit?
Sungraf Material Group Limited offers Flexible Expanded Graphit with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Flexible Expanded Graphit the most?
Flexible Expanded Graphit is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Sungraf Material Group Limited through our platform.
What certifications does this Flexible Expanded Graphit supplier hold?
Sungraf Material Group Limited maintains international quality certifications. These ensure that the Flexible Expanded Graphit meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Flexible Expanded Graphite Ring on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Sungraf Material Group Limited will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Sungraf Material Group Limited.
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