What is the minimum order quantity (MOQ)?

The minimum order quantity is 2 units.

What are the payment terms?

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

What is the lead time for production?

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

ASME B16.20 Sealing Spiral Winding Gasket for Precision Pipe Applications

Name: ASME B16.20 Sealing Spiral Winding Gasket for Precision Pipe Applications
Brand: Ningbo Dongheng Sealing Co., Ltd.
SKU: 2057682782

Zhejiang, ChinaNingbo Dongheng Sealing Co., Ltd.

US$0.10

1 Piece

Sample price:US$1.00/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

Winding

304,316,347,321,317,Monel,904, Inconel

Inner Ring

304,316,347,321,317,Monel,904, Inconel

Outer Ring

304,316,347,321,317,Monel,904, Inconel

Filler

Fg, Mica, Cnaf, Asb, PTFE

Transport Package

Wooden Carton

Specification

DN15 ~ DN10000

Trademark

XINSEN/DONHONSIL

Origin

China

HS Code

8484100000

Production Capacity

50000000PCS/Year

Key features

Robust Inner Ring Design: Prevents collapse, shields sealing element, and ensures precise centering on flange faces.

Wide Material Selection: Available in 304, 316, 317, Monel, Inconel, and various fillers like PTFE and Graphite.

Compliance with Standards: Meets ASME B16.20 and DIN 2699 standards, mandatory for PTFE and graphite fillers.

Corrosion Resistant Outer Ring: Constructed from carbon steel (painted/zinc plated) or special alloys for severe mediums.

Flexible Customization: Supports full customization, minor customization, and customization from samples or designs.

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

High Performance Seal: Engineered for wear resistance, preventing blowout, and averting erosion between flanges.

Manufacturer Direct Supply: Direct from factory with 28 employees, 3 production lines, and CE certification.

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: ≤18h

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 winding gasket?

The winding, inner ring, and outer ring can be made from 304, 316, 347, 321, 317, Monel, 904, or Inconel. Fillers include Fg, Mica, Cnaf, Asb, and PTFE.

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

The inner ring prevents the gasket from collapsing into the pipe, shields the sealing element from extreme temperatures, fills voids to prevent erosion, and ensures precise centering.

Q:Are inner rings mandatory for all spiral wound gaskets?

According to ASME B16.20, inner rings are compulsory for gaskets with PTFE fillers and are considered essential for those with graphite fillers.

Q:What standards does this product comply with?

The product complies with ASME B16.20 and DIN 2699 German standards, which mandate specific construction features for spiral wound gaskets.

Q:Can this gasket be customized?

Yes, we offer full customization, minor customization, and customization from samples or designs based on specific requirements.