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Product profile
Customization
AvailableStyle
O RingFunction
Fixed Sealing, Shaft SealingModel NO.
International standards or customer requirementsApplication
Equipment Seal, Flange SealShape (For Gasket)
Ring GasketMaterial
MetalStandard
StandardTransport Package
Wooden CasesSpecification
International standards or customer requirementsTrademark
ZEHAOrigin
Wenzhou, ChinaProduction Capacity
10000pieces/WeekKey features
Leak-Proof Welding Design: Lip is directly welded to eliminate creep and stress relaxation effects.
High Temperature Resistance: Suitable for high temperature and high pressure equipment sealing.
Hazardous Media Safety: Ideal for containers with highly hazardous, flammable, and explosive media.
Metal Material Construction: Made of durable metal for fixed and shaft sealing applications.
Low Temperature Compatibility: Effective in both high and low temperature high pressure environments.
Supplementary Seal Option: Can be supplemented with 0.5mm flexible graphite or PTFE gaskets.
Company profile

Business Type: Manufacturer/FactoryExport Year: 2023-10-06Nearest Port: ningboAverage Response Time: ≤2.47h
AI-Powered supplier vetting
SummaryWenzhou Zhenghai Sealing Co., Ltd is identified as a China-based manufacturer/factory in Zhejiang, producing metallic ring gaskets, flange gaskets, spiral-wound gaskets, and related sealing products. The supplier reports CNC and inspection equipment, 10 production lines, and 6–10 quality-control staff. It states that products can be made to customer drawings and dimensions, with a maximum product size of 2,000 mm, and lists multiple management-system certifications, including ISO 9001 and API-related certifications. Export activity reportedly began in 2023, while export sales represent 1%–10% of total sales. Evidence is insufficient to assess after-sales capability, financial credibility, innovation capability, or customer cases.
Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory, while another record describes the company nature as a trade company. The formal supplier-type field and the company’s stated manufacturing address support manufacturer status, although the conflicting classification should be clarified.
CertificationsThe supplier states that it passed API 6A, API Q1, and ISO 9001:2008 certifications, and separately lists ISO 9000, ISO 9001, ISO 14001, ISO 14000, and ISO 50001 management-system certifications. These declarations provide explicit evidence of certification holding, although certificate validity and scope are not supplied.
Production capacityProduction capability is supported by 10 production lines, 6–10 quality-control staff, CNC and testing equipment, a stated maximum product size of 2,000 mm, and a broad range of gasket products and materials. The supplier also identifies specialized ring-joint and flange-gasket applications, indicating established product manufacturing scope.
Customization capabilityThe supplier explicitly states that it can manufacture according to customer-specific dimensions or drawings, with products up to 2,000 mm, and can supply products in approximately 30 material types. This directly supports customization in dimensions, drawings, and material selection.
Product Q&A
Q:What is the primary function of the metal lip seal ring?
A:
It provides fixed sealing and shaft sealing, specifically designed to prevent leakage in high temperature and high pressure environments.
Q:How does the lip welding structure prevent leakage?
A:
The lip is directly welded to eliminate the negative effects of creep and stress relaxation, ensuring a leak-proof seal.
Q:What types of equipment is this seal suitable for?
A:
It is widely used in high temperature and high pressure equipment, as well as low temperature and high pressure equipment, especially for hazardous media.
Q:Can the lip seal be used with other gasket materials?
A:
Yes, the lip welding structure can be supplemented with gasket seals, generally using 0.5mm thick flexible graphite or PTFE.
Q:What is the recommended bolt load for lip seal welding?
A:
The bolt load should be slightly greater than the axial force caused by the internal pressure to ensure effective sealing.
Send Inquiry
*To:
Wenzhou Zhenghai Sealing Co., Ltd
Wenzhou Zhenghai Sealing Co., Ltd*Content:
Supplier replies will be sent to your registered email
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