What is the lead time? Do you support fast delivery for small custom orders?

Common sizes are in stock for same-day or next-day shipping. Non-standard custom orders typically take 3-5 working days for cutting and packing. Rush orders are accepted, with no minimum order quantity.

How do you ensure sealing reliability and traceability?

Each batch has material lot numbers and process records. We can provide raw material test reports (density, tensile strength, compressibility, etc.). The factory operates under ISO 9001, with key indicators fully inspected to ensure defect-free gaskets and accurate dimensions.

High-Performance Soft Expanded PTFE Gasket Flexible Expansion PTFE Eptfe Flange Gasket

Name: High-Performance Soft Expanded PTFE Gasket Flexible Expansion PTFE Eptfe Flange Gasket
Brand: Zhenjiang Chunhuan Sealing Materials Co., Ltd. (Group)
SKU: 902827445

Jiangsu, ChinaZhenjiang Chunhuan Sealing Materials Co., Ltd. (Group)

US$2.00

1-99 kg

US$1.00

100-999 kg

US$0.50

1,000+ kg

Sample price:US$1.00/piece.Request sample

Product profile

Material

Expanded PTFE

Application

Seal, Heat Insulation, Antiseptic

Type

Seals

Model NO.

Soft Expanded PTFE Gasket

Performance

Corrosion

Shape

Customized

Standard

Standard, Nonstandard

Color

White

Apparent Density

0.2-1.6g/cm3

Ultimate Elongation

≥140%

Usage

Pump, Compressor, Valve, Piping

Transport Package

Standard Export Packing

Specification

as your requirement

Trademark

CHUNHUAN

Origin

China

HS Code

39209910

Production Capacity

10000set/Month

Key features

Superior Sealing Performance: Softer with better compression recovery, conforming to uneven flange surfaces for fragile materials.

Wide Chemical Resistance: Inert to almost all chemicals in pH 1-14 range, including strong acids, alkalis, solvents, and oils.

FDA and Pharmaceutical Compliant: Complies with FDA, USP Class VI, and 3A standards for food and pharmaceutical applications.

Customized Shape Available: Shape is customized to meet specific requirements with flexible quantity options.

Fast Delivery for Custom Orders: Non-standard custom orders take 3-5 working days with no minimum order quantity.

Improved Creep Resistance: Specially treated microstructure significantly improves resistance to cold flow compared to ordinary PTFE.

Full Traceability and Quality Control: ISO 9001 certified with material lot numbers, test reports, and 100% finished product inspection.

Company profile

Self-brandedYears of Export ExperienceImporters and ExportersHigh Repeat Buyers Choice

Zhenjiang Chunhuan Sealing Materials Co., Ltd. (Group)

Jiangsu, China

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: ≤4.12h

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 main advantage of expanded PTFE gaskets compared to ordinary PTFE gaskets?

Expanded PTFE gaskets are softer and have better compression recovery. They conform well to uneven or low-pressure flange surfaces, providing superior sealing performance, especially for fragile flanges made of glass, ceramic, or plastic.

Q:What media can this gasket handle? Is it resistant to strong acids and alkalis?

Expanded PTFE gaskets are chemically inert and resist almost all chemicals in the pH range of 1-14, including strong acids, strong alkalis, solvents, oils, and greases. They are widely used in chemical, pharmaceutical, and food industries.

Q:What installation precautions should be taken for soft expanded PTFE gaskets?

Tighten flange bolts evenly in a diagonal pattern and avoid over-compression. Recommended compression is 20%-30% of original thickness. Due to softness, low bolt torque is sufficient for sealing; excessive torque may cause extrusion.

Q:Is this gasket suitable for food or pharmaceutical applications? Does it have relevant certifications?

Yes. Expanded PTFE gaskets typically comply with FDA, USP Class VI, 3A, etc. They are non-contaminating and non-leaching, suitable for food contact, pharmaceutical pure water, bioreactors, and other sanitary applications.

Q:Does expanded PTFE gasket suffer from 'cold flow' or creep relaxation like ordinary PTFE?

The microstructure of expanded PTFE is specially treated. Although some creep remains, creep and cold flow resistance are significantly improved compared to ordinary PTFE. Proper installation torque maintains long-term sealing stress.