What is the lead time for production?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

Does the product have any certifications?

Yes, the product has CE certification.

Specialized Spiral Wound Gasket for 321 and Monel Sealing Needs

Name: Specialized Spiral Wound Gasket for 321 and Monel Sealing Needs
Brand: Ningbo Dongheng Sealing Co., Ltd.
SKU: 2057645582

Zhejiang, ChinaNingbo Dongheng Sealing Co., Ltd.

US$0.10-0.20

1 Piece

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

Material

Metal+Non-Metal

Application

Flanges

Model NO.

XINSEN-SD

Type

Shaft Seal

Performance

Wear

Shape

O-Ring

Standard

Standard, Nonstandard

Inner Ring

304,316,Monel,Alloy20, Uns S32750

Hoope

304,316,321,317,Monel, 32750, Inconel

Filler

Graphite, Mica, Ceramic

Outer Ring

304, 316, 321, Monel, Inconel

Transport Package

Wooden Carton

Specification

DN15 ~ DN10000

Trademark

XINSEN/DONHONSIL

Origin

China

HS Code

8484100000

Production Capacity

50000000PCS/Year

Key features

Inner Ring Design: Prevents implosion, ensures centering, and shields sealing element from extreme conditions.

Wide Material Range: Available in 304, 316, 321, Monel, Inconel, and various fillers like Graphite and PTFE.

Flexible Customization: Supports full customization, minor adjustments, and design-based customization options.

Robust Outer Ring: Provides radial strength to prevent blowout and acts as a compression stop for stability.

Versatile Application: Suitable for raised face, flat face, tongue and groove, and heat exchanger flanges.

Compliance with Standards: Meets German DIN 2699 and ASME B16.20 standards for spiral wound gasket construction.

High Performance: Designed for wear resistance, erosion prevention, and reliable sealing in demanding environments.

OEM/ODM Service: Manufacturer offers OEM and ODM services with 1 R&D engineer for specialized needs.

Company profile

Fast DeliveryOEM ServicesQuality AssuranceQA/QC Inspectors

Ningbo Dongheng Sealing Co., Ltd.

Zhejiang, 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: 4 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤15h

AI-Powered supplier vetting

SummaryThe supplier manufactures industrial sealing products, including spiral wound gaskets, PTFE tape, and PTFE gaskets, from a 4,500 m² facility with three production lines. It offers extensive customization, 3D design, ODM, and OEM services, and reports new products within the past year. Quality-related evidence includes CE certification, ISO 9001:2015 certification, quality assurance, and documented corrective and preventive action procedures. However, complaint handling lacks written records, supplier approval documentation is incomplete, and the factory does not continuously reconcile production quantities or maintain standard outsourcing procedures. The supplier has inventory capability and valid contracts with affiliated subcontractors, but no overseas warehouse, showroom, agents, branches, or overseas service locations. Export activity is reported, with 31%–40% of sales from exports and four years of export experience. Customer evidence includes a 50%–80% repeat-buyer preference, but no Fortune 500...

Supplier typeThe supplier is a manufacturing-oriented industrial equipment and components provider producing spiral wound gaskets, PTFE tape, and PTFE gaskets. It has a 4,500 m² manufacturing plant, three production lines, inventory capability, and valid contracts with affiliated subcontractors, while lacking overseas warehouses, showrooms, agents, and branches.

CertificationsThe supplier reports CE product compliance certification and an ISO 9001:2015 management-system certificate. It also states that quality assurance is present in its quality-control processes, providing explicit certification and quality-system evidence.

R&D capabilityThe supplier provides 3D software design, ODM, and OEM services and reports new products within the past year. It has one R&D engineer and no available SDK, indicating some development capability but limited evidence of broader technical resources.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, flexible customization, and 3D software design services. This establishes broad customization coverage across both design-based and sample-based requirements.

Product Q&A

Q:What materials are available for the spiral wound gasket?

Materials include 304, 316, 321, Monel, Alloy 825, Inconel 625, and S32750 for rings, with fillers like Graphite, PTFE, Mica, and Ceramic.

Q:What is the function of the inner ring in this gasket?

The inner ring prevents gasket implosion during installation, ensures accurate centering on the flange face, and shields the sealing element from extreme temperatures and media.

Q:Can this product be customized?

Yes, we offer full customization, minor customization, customization from samples, and customization from designs.

Q:What are the standard sizes and thicknesses?

Sizes range from 16mm to 3000mm, with thickness options including 3.2mm, 4.5mm, 4.8mm, 5.5mm, and 7.5mm.

Q:What are the payment terms and minimum order quantity?

The minimum order quantity is 2. Payment terms include LC, T/T, D/P, PayPal, Western Union, and small-amount payment.