Wound Gasket with 321 Inner Ring and High-Performance Graphite Filler

Name: Wound Gasket with 321 Inner Ring and High-Performance Graphite Filler
Brand: Ningbo Dongheng Sealing Co., Ltd.
SKU: 2078955662

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

321 Inner Ring Design: Prevents implosion into pipes and safeguards sealing elements against extreme temperatures and harsh mediums.

High-Performance Graphite Filler: Provides superior sealing performance and durability compared to standard fillers like PTFE or asbestos.

Robust Outer Guide Ring: Ensures precise centering on flange faces and enhances radial strength to prevent blowouts.

Wide Material Customization: Inner rings, hoops, and outer rings available in 304, 316, 321, Monel, Inconel, and other alloys.

Compliance with Standards: Adheres to DIN 2699 and ASME B16.20 standards, ensuring reliability for raised and flat faced flanges.

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

Versatile Application Scope: Suitable for flanges, heat exchangers, and various industrial environments with diverse pressure and temperature needs.

Corrosion Resistant Options: Outer rings can be painted, zinc plated, or made from specific alloys for enhanced corrosion resistance.

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.