01
First, clearly identify the problem on site.
從設備、介質、溫度、壓力、運動方式、尺寸與失效狀況切入，先釐清真正要解決的密封問題。
INDUSTRIAL SEALING PARTS
Industrial Sealing Components
One-stop confirmation from material selection to custom mass production
Send Chengxin your old parts, photos, dimensions, drawings, equipment models, or operating conditions. We’ll work with you to evaluate everything from materials and specifications to manufacturing processes and delivery times, ensuring that both procurement and engineering teams receive parts that are truly usable as quickly as possible.
High-Temperature and Chemical ResistanceHigh-Precision Custom MachiningFrom Small-Scale Prototyping to Mass Production
COMMON PROBLEMS
When looking for parts, do you also run into these problems?
舊零件停產、型號難查，要去哪裡找到相同規格？
手上只有舊件、照片或圖面，材質、耐溫與耐壓要怎麼確認？
特殊尺寸又要顧交期，誰能一起確認規格、加工與交貨時間？
WHO WE ARE
Chengxin helps Taiwanese manufacturers identify the right parts, ensure they are complete, and make them readily available.
You can provide us with old parts, photos, dimensions, drawings, equipment models, or operating conditions. Chengxun will help you identify the part type, material, dimensions, and available supply options—from off-the-shelf specifications and alternative materials to custom fabrication—so that your procurement, engineering, and maintenance teams can quickly obtain parts that are ready for use.
WHY CHENGSHIN
Our Six Key Advantages
From problem analysis and material selection to manufacturing, inspection, and mass production, we refine vague sealing requirements into specifications that can be procured, manufactured, and delivered.
02
Material Selection Is Based on Operating Conditions
PTFE、PVDF、PEEK、PCTFE、FFKM、PI 等高性能材料，依耐溫、耐化學、強度與成本需求做搭配，讓工程判斷帶出最合適的材料。
03
You can start with existing parts, drawings, and dimensions
從舊件照片、尺寸、圖面或設備型號開始，逐步把規格補齊，採購一次就對。
04
Delivery of Machined Parts, Inspections, and Documentation
From drawing processing and dimensional verification to material and quality documentation, we ensure that both the engineering and procurement teams receive a set of deliverables that are traceable and verifiable.
05
Seals Designed for High Temperatures, Corrosion, and Dynamic Applications
支援高低溫、強酸鹼、真空、法蘭密封、往復與旋轉等常見工況，從材料到零件形式一起評估。
06
One-stop service from small-scale prototyping to mass production
從少量打樣、替代料確認到正式量產與交期銜接，驗證完成後直接接上量產，規格一路延續。
OUR PRODUCTS
Frequently Searched Products and Parts
We offer a wide range of sealing components and engineered parts, supporting standard products, replacement parts, and custom machining applications.
STEP 01
先確認你需要哪一種零件
先看設備、密封位置與使用方式，確認零件類型。
01
Flange Gaskets / Flat Gaskets
Flange connections and static seals; a variety of materials, sizes, and specifications are available for evaluation.
查看法蘭墊片 →
02
O-Ring / Square Ring
Select materials based on the medium and temperature, taking into account the static and dynamic sealing positions.
查看O-Ring →
03
Backup Ring／Support Ring
Reduce the risks associated with high-pressure extrusion and improve the stability and service life of the main seal.
查看Backup Ring →
04
Valve Seat Ring
Used for valve seals and precision fits; can be machined according to drawings and dimensions.
查看Valve Seat Ring →
05
Oil Seals / Shaft Seals
Rotary shaft seal that provides both lubricant containment and protection against external contamination.
查看油封 →
06
Spring-Assisted Seal
Suitable for demanding sealing applications such as vacuum, low-pressure, and special media environments.
View Spring-Enhanced Seals →
07
Hydraulic Seals
Hydraulic cylinders are used in reciprocating equipment, offering a balance of pressure resistance, wear resistance, and service life.
查看液壓密封件 →
08
Special/Custom Seals
We manufacture custom sealing components based on drawings, samples, dimensions, and operating conditions.
查看特殊 →零件類型確認後再依介質、溫度、壓力與機械需求選材料
STEP 02
Commonly Used High-Performance Materials
材料要對應實際介質、溫度、壓力與機械需求，零件才能穩定使用。
PTFE
Corrosion-Resistant and Low-Friction
PVDF
Chemical Resistance and High Toughness
PEEK
High Strength, High-Temperature Resistance
PCTFE
Low Osmolarity, Low-Temperature Stability
FFKM
High-Performance Chemical-Resistant Seals
PI
High-Temperature Resistance・Dimensional Stability
有圖面、舊件或使用條件？
直接傳給承炘協助判斷。
APPLICATIONS
不同設備，都能對到合適的密封零件
先看實際場景，再把材料與零件形式配到能長期工作的狀態。
液壓／往復設備｜耐壓耐磨更持久
Hydraulic cylinders are used in reciprocating equipment, offering a balance of pressure resistance, wear resistance, and service life.
對應零件：液壓密封件、Backup Ring／支撐環
Pumps/Valves | More Reliable Fluid Sealing
Used for valve seals and precision fits; can be machined according to drawings and dimensions.
對應零件：Valve Seat Ring／閥座環、O-Ring
旋轉軸設備｜潤滑與防護一起顧
Rotary shaft seal that provides both lubricant containment and protection against external contamination.
對應零件：油封／軸封
化工設備｜法蘭連接密封更穩
Flange connections and static seals; a variety of materials, sizes, and specifications are available for evaluation.
對應零件：法蘭墊片／平墊片
食品／製藥｜依工況客製密封
We manufacture custom sealing components based on drawings, samples, dimensions, and operating conditions.
對應零件：特殊／客製密封件
半導體／真空｜高要求工況更穩
Suitable for demanding sealing applications such as vacuum, low-pressure, and special media environments.
對應零件：彈簧增能密封、FFKM
INCOMING MATERIAL VERIFICATION
Documented materials provide peace of mind when making a delivery
FTIR 材質比對、尺寸外觀與材料文件一起確認，讓你拿到的零件可以驗證、可以追溯，也更容易接上內部品管流程。
FTIR Material ComparisonWe verified the feedstock material through spectral analysis, and it matched the specifications.
Test reports are traceableThe comparison results and inspection records are retained and can be provided upon request.
With the documentation in place, it’s easier to verify that the specifications have been met.Material certification and compliance documentation are provided based on manufacturer or third-party documents, including requirements such as REACH, RoHS, FDA, COA, PFAS, and PFOS.
Simultaneous Verification of Dimensions and AppearanceIncoming materials undergo FTIR material verification, and their dimensions and appearance are checked simultaneously to ensure that the materials, specifications, and actual delivery match.
CUSTOMER SUCCESS
In the end, what we saw was that the equipment really did become more stable.
前面所有判斷最後都要落到結果：更穩定密封、更好維護、交付更好驗收。
Hydraulic Equipment
液壓設備｜密封重新穩定
重新檢視密封零件的材料、尺寸與實際工況後，再進行對應更換與調整。
設備運轉明顯穩定。
Food Equipment
Food Equipment | Sealing and Documentation—All in One
承炘依使用條件協助選擇密封零件，並搭配相應材料文件。
The result is a sealing solution that is usable, verifiable, and more likely to pass internal quality control processes.
High-Temperature, High-Pressure Equipment
High Temperature and High Pressure | More Stable Sealing, Better Control of Downtime
面對高溫、高壓與長時間運轉條件，從材料相容性、尺寸與安裝條件重新確認，讓零件真正符合設備需求。
最後得到更穩定的密封表現，停機更好安排。
CONTACT
Send us the requirements so we can confirm whether it's feasible.
Please provide us with samples, photos, dimensions, drawings, equipment models, media, temperature, pressure, and quantities. We will then help you determine the materials, specifications, manufacturing methods, and delivery times.