What are the lead times for production?

The average lead time is one month during peak season and within 15 workdays during the off-season.

What payment terms are accepted?

We accept LC, T/T, D/P, PayPal, Western Union, and Small-amount payment.

What certifications does the company hold?

The company holds CE certification for its products.

Flexitallic Wound Gasket for Reliable Performance in Harsh Conditions

Name: Flexitallic Wound Gasket for Reliable Performance in Harsh Conditions
Brand: Ningbo Dongheng Sealing Co., Ltd.
SKU: 2083293752

Zhejiang, ChinaNingbo Dongheng Sealing Co., Ltd.

US$0.10

1 Piece

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

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, shields sealing element, and ensures optimal centering on flange face.

Robust Outer Ring Strength: Provides unmatched radial strength, prevents blowouts, and serves as a compression stop.

DIN 2699 & ASME Compliance: Inner rings meet stringent German DIN 2699 and ASME B16.20 standards for safety.

Wide Material Selection: Available in 304, 316L, Alloy825, Monel400, Inconel625, and various fillers like Graphite/PTFE.

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

Versatile Application: Suitable for raised/flat-faced flanges, heat exchangers, and harsh conditions.

Corrosion Resistant Options: Outer rings can be painted, zinc-plated, or made from alloys for demanding environments.

Low Minimum Order Quantity: MOQ is only 2 units, allowing for small batch testing and procurement.

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 is the purpose of the inner ring in this spiral wound gasket?

The inner ring prevents implosion into the pipe during installation, shields the sealing element from severe temperatures and diverse mediums, fills the gap between flanges to prevent erosion, and ensures optimal centering on the flange face.

Q:Which standards does the inner ring comply with?

The inner ring meets the stringent DIN 2699 standard (German) and complies with ASME B16.20 standards, which necessitate inner rings for gaskets with PTFE or graphite fillers.

Q:What materials are available for the outer ring?

The outer ring is usually fabricated from carbon steel, painted or zinc-plated to resist corrosion. It can also be crafted from alloys for elevated temperature and demanding medium applications.

Q:What customization options are available for this product?

We offer full customization, minor customization, and flexible customization from samples or designs. OEM and ODM services are also available.

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

The minimum order quantity is 2 units.