中威

What 中威 does

Chung Wei Sealing Co., Ltd. (中威密封元件) is a Taiwan-based industrial sealing component manufacturer and distributor founded in 1982, headquartered in Yongkang District, Tainan City, with a second branch in Fengyuan District, Taichung City, operated through subsidiary 垣郡有限公司 (established 2001). The company produces and sells O-rings, X-rings, hydraulic seals, pneumatic seals, rotary oil seals, heavy machinery oil seals, spring-loaded HiPerSeal brake seals, PTFE backup rings, wear/guide rings, self-lubricating bearings, mechanical seals, and centralized lubrication systems, spanning materials including NBR, EPDM, FKM, HNBR, silicone, PTFE, FFKM, and Teflon-coated variants. In parallel, Chung Wei is an authorized distributor in Taiwan for Japanese sealing brands NOK Corporation, SAKAGAMI, and VALQUA, giving the company a dual role as both manufacturer and channel partner.

The company's revenue model is based on direct sales of manufactured and distributed sealing components through two physical store locations in Taiwan's primary industrial corridors (Tainan and Taichung), supplemented by digital channels including a website, LINE messaging, and Facebook. Customer engagement is sales-led with inquiries handled via phone, email, contact forms, and LINE. The company serves eight vertical segments: automotive and motorcycle, plastic injection molding machinery, hydraulic and pneumatic equipment, electronic equipment (semiconductors and panels), vacuum equipment, food machinery, construction machinery, and pump manufacturing. It also offers custom OEM/ODM rubber molded parts, including solar EPDM gaskets for the renewable energy sector.

The company is privately held with no disclosed ownership structure, institutional investors, or funding history. Revenue figures are not publicly disclosed. The company has operated for over 40 years with 42 employees, positioning it as a small-to-mid-sized specialized industrial supplier. Its competitive positioning rests on Japanese brand distribution rights, in-house custom rubber molding capability with short lead times, and deep regional presence in Taiwan's two primary machinery manufacturing clusters. No AI/ML, digital platform, or technology-enabled differentiation is evident in the source material.

Name

中威

Legal name

CHUNG WEI SEALING CO.,LTD

Website

https://scw-cw.com

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

Chung Wei Sealing Co., Ltd. (中威密封元件) is a Taiwan-based manufacturer and distributor of industrial sealing components, serving automotive, hydraulics, plastics, semiconductor, and machinery sectors across Tainan and Taichung with proprietary products and Japanese partner brands.

Ownership category

akta.pro rank

Headquarters

HQ city

Yongning District, Tainan City

HQ country

Taiwan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Marketing or Sales

Revenue model

1. Sealing Components Manufacturing & Sales: Manufacture and sale of various sealing components including O-rings, oil seals, hydraulic seals, pneumatic seals, rotary seals, and custom rubber molded parts. Revenue generated from product sales to industrial customers.
2. Japanese Brand Distribution: Distribution of Japanese sealing brands including NOK Corporation, SAKAGAMI, and VALQUA. Revenue generated from resale of imported Japanese sealing products in Taiwan market.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

中威 manufactures and sells industrial sealing components including O-rings, X-rings, hydraulic seals, pneumatic seals, rotary oil seals, heavy machinery oil seals, PTFE backup rings, wear rings, self-lubricating bearings, mechanical seals, and centralized lubrication systems. The company also produces custom rubber molded parts under OEM/ODM arrangements and serves as an authorized Taiwan distributor for Japanese sealing brands NOK, SAKAGAMI, and VALQUA. Target customers are industrial manufacturers across automotive, plastic injection molding, hydraulic/pneumatic, semiconductor, vacuum, food machinery, construction machinery, and pump sectors.

Product overview

中威密封元件 (Chung Wei Sealing Co., Ltd) is a Taiwan-based manufacturer and distributor of industrial sealing components founded in 1982, operating a dual-location business with stores in Tainan and Taichung (Fengyuan). The company serves industrial, hydraulic/pneumatic, automotive, plastic injection molding, electronics (semiconductor/panel), vacuum, food machinery, construction machinery, and pump manufacturing sectors. Its core product portfolio centers on O-rings (in NBR, EPDM, FKM, HNBR, silicone, PTFE, FFKM, and Teflon-coated variants) and X-rings as the primary sealing solution, supported by a comprehensive range of hydraulic seals, pneumatic seals, heavy machinery oil seals, rotary shaft seals, spring-loaded HiPerSeal brake seals, PTFE backup rings, wear/guide rings, self-lubricating bearings, mechanical seals, and centralized lubrication systems. The company also offers custom rubber molded parts under OEM/ODM arrangements, including solar EPDM gaskets. In addition to its own manufacturing, 中威 distributes branded sealing products from Japanese partners NOK, SAKAGAMI, and VALQUA, as well as Hallite products. The portfolio is organized around the core O-ring/X-ring product line, with specialized sealing solutions (hydraulic, pneumatic, rotary, heavy machinery) as parallel core categories, and supplementary products (bearings, lubrication systems, custom molded parts) that round out the industrial sealing ecosystem.

Differentiator

Problem solved

Functional benefit

Products and services

• O-Ring (O型環) Rubber sealing rings in materials including NBR, EPDM, FKM, HNBR, silicone, PTFE, FFKM, and Teflon-coated variants (FEP/PFA). Used for static sealing across industrial, hydraulic, automotive, and semiconductor applications. Core product of the company.
• X-Ring (X型環) Four-lipped sealing rings offering improved sealing performance and lower friction than standard O-rings, used in fluid power and automotive applications.
• Hydraulic Seal (油壓迫緊) Hydraulic sealing solutions including U-type oil seals, piston seals, and rod seals, distributed from brands NOK, SAKAGAMI, VALQUA, and Hallite.
• Pneumatic Seal (空壓迫緊) Pneumatic sealing components including dual-purpose seals, piston seals, rod seals, dust seals, and buffer seals for air compression systems.
• Heavy Machinery Oil Seal (重機油封) Heavy-duty sealing products for construction machinery, including piston seals, rod seals, and dust seals designed for high-pressure and harsh environments.
• Rotary Oil Seal (旋轉油封) Shaft seals for rotating equipment including TC, TCN, TCNY, TCV, TB, DC4, VA, VS, TR, TP, and NOK TC types, preventing fluid leakage in drive systems.
• HiPerSeal Spring-Loaded Reciprocating Seal Spring-loaded reciprocating shaft seals (VR, VC, VD, VP, HB, HC, HP, HR, VB) made of PTFE or UHMW-PE with spring-loaded sealing lips for high-temperature and high-pressure applications.
• PTFE Back-up Ring (鐵氟龍擠片) PTFE backup rings (BRT, BRT+C2) used in high-pressure environments to prevent O-ring extrusion from grooves.
• Wear Ring / Guide Ring (導向環) Guide rings and wear rings (RYT, RYT embossed, WR phenolic ring) that guide hydraulic cylinder pistons and rods, absorb lateral forces, and prevent metal-to-metal contact.
• Self-Lubricating Bearing (自潤軸承) Self-lubricating bearings (BM type) with a steel-backed bronze-PTFE-Pb composite structure, providing low friction and wear resistance without external lubrication.
• Mechanical Seal (機械軸封) Mechanical shaft seals (UA, UB types) for rotating machinery such as centrifugal pumps, centrifuges, reactors, and compressors, preventing fluid leakage.
• Centralized Lubrication System (集中潤滑裝置) Complete centralized lubrication systems including distributors (WDA, WDB, WRH, WPSS, WPST, WDT), fittings, connectors, tubing, and accessories.
• Custom Molded Rubber OEM/ODM Custom rubber molded parts and bespoke products (PL, SU, HH, BRT, KT, H-VT types) for specialized industrial applications, including solar EPDM gaskets. Manufactured to customer specifications with short lead times.
• Bonded Seal (BR, BS) (鎢司擋片) Bonded seals combining a metal ring with a vulcanized rubber sealing gasket (NBR on SPCC steel), used for sealing threaded and flange connections.
• NOK Corporation Hydraulic Seals (NOK株式會社液壓密封件) Japanese NOK Corporation hydraulic seals including U-type oil seals, piston seals, rod seals, and dust seals, distributed in Taiwan by 中威.
• SAKAGAMI Sakagami Seisakusho Hydraulic Seals (SAKAGAMI阪上製作所油封) SAKAGAMI Sakagami Seisakusho hydraulic and dust seals including general-purpose seals, piston seals, and rod seals, distributed in Taiwan by 中威.
• VALQUA Corporation Hydraulic Seals (VALQUA華爾卡液壓密封件) VALQUA hydraulic seals including U-type oil seals for piston and rod applications, distributed in Taiwan by 中威.

Segments9 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Four partnerships are on record, tiered core.

• 垣郡有限公司 (Hengjun Co., Ltd.)coreStrategic or Co-development Partner · 1 January 2001Established in 2001 (Republic of China Year 100) as a related company. 台南永康「中威密封元件」and 台中豐原「垣郡有限公司」operate as two major branch offices under coordinated management for expanded market coverage.
• NOK株式会社 (NOK Corporation)coreChannel Partner/ Reseller/ DistributorAuthorized distributor of NOK Corporation products in Taiwan. NOK is a major Japanese manufacturer of sealing systems including oil seals, hydraulic seals, and O-rings. 中威 distributes NOK products in southern Taiwan market.
• SAKAGAMI阪上製作所coreChannel Partner/ Reseller/ DistributorAuthorized distributor of SAKAGAMI products in Taiwan. SAKAGAMI is a Japanese manufacturer specializing in hydraulic and pneumatic seals. 中威 serves as the distribution channel for SAKAGAMI products.
• VALQUA华尔卡 (VALQUA Corporation)coreChannel Partner/ Reseller/ DistributorAuthorized distributor of VALQUA Corporation products in Taiwan. VALQUA is a Japanese company specializing in industrial sealing materials and fluorine-based products. 中威 distributes VALQUA products as part of their Japanese brand portfolio.

Scale indicators1 record

Recent moves5 records

Expansion highlights4 records

Market position

Weaknesses5 records

Competitive moat3 records

Customer concentration

• Facebookfacebook.com/%E4%B8%AD%E5%A8%81%E6%9C%89%E9%99%90%E5%85%AC%E5%8F%B8-100392095045409
• LinkedInlinkedin.com/company/%E4%B8%AD%E5%A8%81

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 中威