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Factory Direct Offer EPDM + PTFE Sealing Gasket Rubber PTFE Composite Gasket
US$0.49-0.94
100 Pieces
Sample price:US$1.00/piece.Request sample
Product profile
Style
Mechanical SealFunction
Fixed Sealing, Hole Sealing, Rotary Sealing, Nozzle Ring Sealing, Shaft Sealing, Dust Prevention SealingApplication
Auxiliary Seal, Junction Surface Seal, Equipment Seal, Flange Seal, Hydroseal, Pump SealModel NO.
Rubber PTFE Composite GasketShape (For Gasket)
Flat GasketMaterial
EPDM + PTFEStandard
Standard, NonstandardWide Temperature Range
-50°C to +260°CChemical Resistance
Highly Corrosive EnvironmentsLifespan
Anti-Aging and Low WearPressure Range
Static Sealing ≤25 MPa; Dynamic Sealing ≤15Compression Rate
15-25%Rebound Rate
≥85%Transport Package
Wooden Boxes and Can as Your RequestSpecification
as your requestTrademark
chunhuanOrigin
ZhenjiangHS Code
39209910Production Capacity
50000PCS/MonthKey features
Combining EPDM elastic core with PTFE non-stick outer layer, this composite gasket delivers durable sealing and easy removal in one solution.
With a wide temperature range and resistance to strong acids and alkalis, it reliably performs in demanding chemical and water treatment environments.
The PTFE surface prevents media adhesion, eliminating flange cleaning hassles and significantly reducing maintenance downtime.
Effectively compensates for PTFE creep relaxation, maintaining consistent bolt preload and minimizing the need for frequent retightening.
Fully customizable to any non-standard size or shape, with 2D/3D drawing-based cutting services and no tooling fees, offering flexible response to urgent requirements.
Company profile
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 20 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.62h
AI-Powered supplier vetting
SummaryZhenjiang Chunhuan Sealing Materials Co., Ltd. (Group) is identified as a manufacturer and trading company with its own export license, 186 employees, and more than 30 years of operating history. It produces PTFE sheets, rods, gaskets, and related plastic products, and reports ISO9001, MSDS, RoHS, REACH, and ASTM 3308 credentials. The supplier supports extensive customization and has documented inspection, corrective-action, complaint-handling, and traceability procedures. It reports inventory capability, one-month average lead times in both peak and off-season, and 20 years of export experience. However, it does not provide 3D software design services, has no available SDK, overseas warehouse, overseas showroom, overseas agent or branch, and has not participated in offline trade shows. No valid manufacturing-capacity contract with related subcontractors is reported. Financial information is referenced for 2020–2022, but the provided slices do not disclose sufficient financial results to assess...
Supplier typeThe supplier is explicitly described as both a manufacturer and trading company with its own export license. Its stated activities include manufacturing plastic products and processing machine elements and spare parts, supporting classification as a manufacturing-oriented supplier.
CertificationsThe supplier reports ISO9001, MSDS, RoHS, REACH, and ASTM 3308 credentials, while the sustainability-related certification is specified as ISO9001:2015. These stated certifications provide explicit evidence of certification holdings, although the slices do not verify their scope or current validity dates.
After-Sales capabilityThe supplier has clear procedures and followed records for handling customer complaints, as well as corrective and preventive actions. This directly supports an established after-sales issue-management process.
Production capacityThe supplier identifies itself as a manufacturer with 186 employees and established plastic-product production, reports in-stock capability, and states one-month average lead times in both peak and off-season. However, it also reports no valid manufacturing-capacity contract with related subcontractors, so the evidence demonstrates internal production capability but leaves outsourced-capacity controls as a limitation.
Customization capabilityThe supplier explicitly offers customization from samples, full customization, customization from designs, minor customization, and flexible customization. This is direct evidence of a broad customization service range.
Product Q&A
Q:What is the construction of this EPDM + PTFE composite gasket?
A:
It consists of an EPDM (ethylene-propylene-diene monomer) rubber core with an outer PTFE (polytetrafluoroethylene) covering or coating layer. The EPDM provides high elasticity and compression recovery, while the PTFE layer offers extremely low friction, non-stick properties, and superior chemical resistance, bonded together via vulcanization or adhesive lamination.
Q:What are the respective sealing functions of EPDM and PTFE?
A:
The EPDM core deforms uniformly under bolt preload to fill minor flange irregularities, ensuring initial sealing. The PTFE outer layer contacts the fluid, leveraging its chemical inertness and anti-adhesion to prevent media penetration and sticking, also making disassembly easier.
Q:What chemicals can it resist, and what are the limitations?
A:
The PTFE outer layer resists almost all strong acids, strong alkalis, and organic solvents. The EPDM core resists hot water, steam, mild acids/bases, and many polar solvents. However, it is not recommended for petroleum oils, aromatic hydrocarbons, or strong oxidizing acids that attack EPDM.
Q:Is this gasket FDA-compliant or suitable for food contact?
A:
It depends on your specific requirements. Our standard product uses industrial-grade EPDM and PTFE and does not automatically meet FDA standards. For food or pharmaceutical grades, we offer specialized formulations that comply with FDA 21 CFR 177.2600 (EPDM) and 177.1550 (PTFE) - please specify your requirement when ordering.
Q:Do you support non-standard dimensions or custom shapes? Can you make from drawings?
A:
Yes. We support any custom ID, OD, thickness, and irregular contours, from standard flange sizes to bespoke designs. We accept 2D drawings (PDF/CAD) and 3D models (IGES/STEP) for precision cutting with no tooling charges.
Send Inquiry
*To:
Zhenjiang Chunhuan Sealing Materials Co., Ltd. (Group)
Zhenjiang Chunhuan Sealing Materials Co., Ltd. (Group)*Content:
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