What certifications does the product have?

The product has CE certification.

What payment terms are accepted?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

What is the size range for these gaskets?

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

Outer Ring Spiral Winding Metal Gasket ASME B16.20

Name: Outer Ring Spiral Winding Metal Gasket ASME B16.20
Brand: Ningbo Dongheng Sealing Co., Ltd.
SKU: 2126451305

Zhejiang, ChinaNingbo Dongheng Sealing Co., Ltd.

US$0.10

1 Piece

Product profile

Customization

Available

Style

Mechanical Seal

Function

Fixed Sealing

Model NO.

XINSEN-SC

Application

Auxiliary Seal

Shape (For Gasket)

Ring Gasket

Material

Winding+Filler

Standard

Standard, Nonstandard

Transport Package

Wooden Carton

Specification

DN15 ~ DN10000

Trademark

XINSEN/DONHONSIL

Origin

China

HS Code

8484100000

Production Capacity

50000000PCS/Year

Key features

Enhanced Inner Ring Design: Prevents implosion, protects sealing element, and reduces failure risk during installation.

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

Wide Material Compatibility: Available in 304, 316L, Inconel, Monel, and more with Graphite or PTFE fillers.

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

Comprehensive Size Range: Sizes from 16mm to 3000mm with thickness options from 3.2mm to 7.5mm.

CE Certified Quality: Products meet CE certification standards for safety and performance.

Low Minimum Order: Minimum order quantity is just 2 pieces, suitable for small batches.

Fast Lead Time: Off-season delivery within 15 workdays; peak season within one month.

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: ≤10.84h

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 is the function of the inner ring in a spiral wound gasket?

The inner ring prevents the gasket from imploding into the pipe, protects the sealing element from extreme temperatures, fills the void between flanges to prevent erosion, and reduces failure risk.

Q:What materials are available for the outer ring?

The outer ring is often made of carbon steel (painted or zinc-plated) but can also be made of alloys for higher temperature and more severe medium applications.

Q:What are the customization options available?

We offer full customization, minor customization, customization from samples, customization from designs, and flexible customization options.

Q:What is the minimum order quantity (MOQ)?

The minimum order quantity is 2 pieces.

Q:What are the lead times for production?

Off-season lead time is within 15 workdays, while peak season lead time is one month.