How long is the service life?

Typically exceeds 3-5 years under recommended conditions. Replace if leakage occurs, torque drops, or signs of severe indentation or cracking appear.

Can you provide third-party material test reports?

Yes. Factory certificates are provided for each batch. Third-party testing (e.g., SGS) can be coordinated, with costs borne by the customer.

Factory NBR/EPDM+PTFE Composite Combination Gasket Rubber Coated Gasket

Name: Factory NBR/EPDM+PTFE Composite Combination Gasket Rubber Coated Gasket
Brand: Zhenjiang Chunhuan Sealing Materials Co., Ltd. (Group)
SKU: 903140535

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

US$0.49-0.94

100 Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Material

PTFE + Edpm/NBR

Application

Valve

Type

Oil Seal

Model NO.

NBR/EPDM+PTFE Composite Gasket

Performance

Temperature

Shape

O-Ring

Standard

Standard, Nonstandard

Usage

Chemical and Electrical Properties

Size

Customize Size

Advantage

Acid and Alkali Resistance, Corrosion Resistance

Use Medium

Resistance to Removing Acid Base Metal, Element FL

Transport Package

Standard Export Packing

Specification

as your requirement

Trademark

CHUNHUAN

Origin

China

HS Code

39209910

Production Capacity

10000set/Month

Key features

Customized Size Available: Molds can be made according to customer requirements for non-standard sizes.

Acid and Alkali Resistance: Excellent chemical resistance suitable for corrosive environments and pure fluids.

Low Friction Coefficient: PTFE material offers the minimum friction coefficient of all known pure materials.

High Elasticity and Recovery: Rubber outer ring provides active compensation for flange irregularities and pressure fluctuations.

Fast Sample Delivery: General samples can be arranged within 2-5 days via express shipping.

24-Hour Response Support: Inquiries are replied to within 2 hours during working time and 24 hours otherwise.

Third-Party Testing Support: Factory certificates provided; third-party testing coordinated upon customer request.

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: ≤2.68h

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 main problem does this composite gasket solve?

It combines PTFE's low friction and chemical resistance with rubber's high elasticity, solving leakage and corrosion issues common with single-material gaskets.

Q:Is the PTFE inner ring virgin or modified?

Standard products use virgin PTFE. Filled PTFE (glass fiber, carbon, graphite) is available upon request to improve wear and thermal properties.

Q:Are fully custom sizes available?

Yes. Sizes typically range from DN15 to DN600. Non-standard flanges or special shapes can be custom molded or cut based on drawings.

Q:What installation precautions should be taken?

Clean flange faces, avoid scratching PTFE, tighten bolts in a star pattern with 15-25% compression, and re-torque after initial pressurization.

Q:What advantage does this gasket have over a full PTFE envelope gasket?

The rubber outer ring provides active elastic compensation, making it better for aged flanges and pressure fluctuations, often at a lower cost.