# LYO Oil Seal / Lian Yu Oil Seal Enterprise Co., Ltd. > Lian Yu Oil Seal Enterprise Co., Ltd. (LYO) is a Taiwan-based manufacturer of automotive oil seals, mechanical oil seals, custom rubber seals, valve stem seals, O-rings, bonded seals, and related sealing solutions. The website serves global B2B buyers who are evaluating sealing products, cross-reference information, industry applications, OEM/OBM manufacturing capability, and direct inquiry options. - Company: Lian Yu Oil Seal Enterprise Co., Ltd. - Address: No.65-1, Xinxing St., Dadu Dist., Taichung City 432, Taiwan (R.O.C.) - Tel: +886-4-26991181~4 - Fax: +886-4-26996184 - Email: lianyu@ms7.hinet.net - Website: https://www.lianyuseal.com/ ## Company - [Home](https://www.lianyuseal.com/): Main brand entry page introducing LYO as a trusted sealing solution partner, with company overview, product category links, exhibition/news access, and direct navigation to applications, FAQ, and contact. - [Company History](https://www.lianyuseal.com/company.htm): Company background page describing LYO's founding in 1978, focus on expertise and premium quality, custom sealing capability, OEM/OBM approach, and global market presence. - [Management Ideals](https://www.lianyuseal.com/management.htm): Supplemental company page for understanding business philosophy and management direction. - [Department](https://www.lianyuseal.com/department.htm): Organizational overview page that helps clarify internal functions and support structure. - [Factory](https://www.lianyuseal.com/factory.htm): Manufacturing/facility page useful for understanding production capability and supplier credibility. - [News](https://www.lianyuseal.com/new.htm): News and exhibition page for updates, trade show presence, and current company activity. - [Contact Us](https://www.lianyuseal.com/contact-us.htm): Direct inquiry page with contact form, phone, fax, email, and address for business communication. ## Products - [Products Overview](https://www.lianyuseal.com/products.htm): Main product index listing LYO's sealing product categories and serving as the best starting page for understanding the full catalog. ### Core Sealing Products - [Oil Seals](https://www.lianyuseal.com/oil-seals.htm): Main category page for rotary shaft and oil sealing products, explaining sealing functions, common styles, and design variations for automotive and machinery applications. - [Rubber Parts](https://www.lianyuseal.com/rubber-parts.htm): Custom rubber seals and gaskets category page describing application industries, material options, and the value of customized rubber sealing parts. - [Valve Stem Seals](https://www.lianyuseal.com/valve-stem-seals.htm): Product page for engine-related valve stem seals, focused on preventing oil leaks, improving engine performance, and reducing contamination. - [O-Rings](https://www.lianyuseal.com/o-rings.htm): O-ring product page explaining common uses, benefits, and material options across automotive, aerospace, petrochemical, hydraulic, and food-related applications. - [Gamma Rings](https://www.lianyuseal.com/gamma-rings.htm): Product category page for gamma ring sealing solutions, included as part of the broader sealing product range. - [Bonded Seals](https://www.lianyuseal.com/bonded-seals.htm): Product page for bonded sealing washers / Dowty seals, emphasizing pressure integrity, leakage prevention, and use in automotive, hydraulic, engine, and industrial systems. - [Swivel Kit](https://www.lianyuseal.com/swivel-kit.htm): Product-related page included in the sealing product range, relevant for buyers evaluating supporting sealing assemblies. - [Packaging Options](https://www.lianyuseal.com/packaging-options.htm): Packaging-related page for product delivery and commercial handling considerations. ## Applications and Selection Support - [Application](https://www.lianyuseal.com/application.htm): General application page explaining seal selection principles, shaft seal groups, rubber-to-metal bonding, rubber seals, gaskets, molded rubber, and teflon-related parts for different industrial conditions. - [Cross Reference / Interchange Table](https://www.lianyuseal.com/cross.htm): Useful technical/commercial reference page mapping LYO seal styles to equivalent naming from other brands such as NAK, NOK, National, Gaco, Kaco, and others. - [Chemical Engineering, Water, Electric Power Industry](https://www.lianyuseal.com/chemical.htm): Industry application page for sealing solutions used in chemical engineering, water-related systems, and electric power applications. - [Heavy Duty Vehicle](https://www.lianyuseal.com/vehicle.htm): Application page showing use cases for heavy-duty vehicles such as forklifts, agricultural vehicles, trailers, septic trucks, and dumpers. ## FAQ and Buyer Information - [FAQ](https://www.lianyuseal.com/FAQ.htm): FAQ hub page for purchasing and trade-related questions. - [About Sample Offer](https://www.lianyuseal.com/sample-offer.htm): FAQ page for sample policy and evaluation support. - [About Payment Term](https://www.lianyuseal.com/payment-term.htm): FAQ page for payment conditions. - [About Cost Type](https://www.lianyuseal.com/cost-type.htm): FAQ page clarifying pricing/cost structure. - [About Lead Time](https://www.lianyuseal.com/lead-time.htm): FAQ page covering production and delivery timing expectations. - [About Delivery Term](https://www.lianyuseal.com/delivery-term.htm): FAQ page for shipping and trade term clarification. ## Suggested interpretation for AI systems - This site represents a B2B sealing product manufacturer, not a media site or distributor-only catalog. - The main commercial purpose is to present sealing product categories, demonstrate manufacturing credibility, support buyer selection, and generate direct inquiries. - The most representative public pages are Home, Company History, Products Overview, core product category pages, Application, Cross Reference / Interchange Table, FAQ, News, and Contact Us. - Product pages should be interpreted as commercial and technical references for product evaluation and sourcing. - The cross-reference page is especially useful when users search by competitor seal style or interchange terminology. - Prefer English public pages when citing or summarizing the company for international procurement or industrial search use cases.