We supply flange gaskets, O-rings, backup rings, valve seat rings, oil seals, spring-assisted seals, and engineering plastic parts. We can assist in determining materials, specifications, and providing quotes based on drawings, existing parts, photos, dimensions, and operating conditions.
The old parts on the equipment are no longer in production, their model numbers are unknown, or identical specifications cannot be found on the market, making it difficult for the procurement department to find direct replacements.
All I have are old parts, photos, dimensions, or drawings, and I’m unsure about the original material, temperature resistance, pressure resistance, and compatibility with the medium. I’m worried about buying the wrong parts and having to start over.
Standard products don’t meet our requirements, special sizes are hard to find, and we need to meet our delivery deadlines. We need a supplier who can help us confirm specifications, provide custom processing, and ensure on-time delivery.
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.
We can help you clarify your requirements by considering factors such as equipment, media, temperature, pressure, size, and intended use.
We can help you select materials such as PTFE, PVDF, PEEK, PCTFE, FFKM, and PI based on your operating conditions and budget.
Even if you only have photos, old parts, dimensions, drawings, or equipment model numbers, you can still provide this information to help us verify the details.
First, confirm the dimensions, material, quantity, operating conditions, and processing methods, and then provide a feasible quote.
If original equipment manufacturer (OEM) materials are discontinued, have special specifications, or require material substitutions, we can assist in evaluating alternative sourcing and processing options.
When requesting a quote, confirm stock availability, processing requirements, quantities, and estimated delivery dates at the same time to reduce the time spent on back-and-forth confirmations during the procurement process.
Used for flange connections and static sealing; supports a wide range of materials, sizes, and standards.
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Suitable for a variety of static or dynamic sealing applications; select the appropriate model based on material and dimensions.
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Reduce the risk of extrusion in high-pressure environments and extend the service life of the primary seal.
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Used for static seals and open/closed positions in valves; supports precision machining.
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Used for rotating shaft seals to help prevent lubricant leakage and external contamination.
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Utilizes continuous spring preload and is suitable for low-pressure, vacuum, and special media applications.
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Suitable for hydraulic cylinders and reciprocating motion equipment, offering both pressure resistance and wear resistance.
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Designed to meet the requirements of vacuum environments, external dust protection, and the protection of specialized equipment.
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We manufacture non-standard parts based on drawings, samples, dimensions, and operating conditions.
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We provide custom rings, kits, and engineered plastic parts tailored to your needs.
Learn More →| Materials | Temperature Range (for reference) | Chemical resistance | Mechanical Strength | Abrasion Resistance | (manufacturing, production etc) costs |
|---|---|---|---|---|---|
| PTFE | -200 to 260°C | ★★★★☆ | ★★☆☆☆ | ★★☆☆☆ | ★☆☆☆☆ |
| PVDF | -40 to 150°C | ★★★☆☆ | ★★★★☆ | ★★★☆☆ | ★★☆☆☆ |
| PEEK | -60 to 260°C | ★★★★☆ | ★★★★★ | ★★★★☆ | ★★★☆☆ |
| PCTFE | -200 to 150°C | ★★★☆☆ | ★★★★☆ | ★★☆☆☆ | ★★☆☆☆ |
| FFKM | -20 to 320°C | ★★★★★ | ★★★★☆ | ★★★☆☆ | ★★★★☆ |
| PI | -269 to 400°C | ★★★★☆ | ★★★★★ | ★★★★☆ | ★★★☆☆ |
※ Material properties and temperature ranges must be verified based on the actual grade, medium, pressure, and operating conditions; please update this information according to Chengxin’s official data when finalizing engineering drawings.
Please provide photos, old parts, drawings, dimensions, equipment models, media, and operating conditions. We recommend contacting us via LINE first; you may also request a quote directly by phone or email.
You can provide photos, old parts, dimensions, drawings, equipment models, or operating conditions in advance.
Help clarify the part type, dimensions, material, and any usage conditions that require attention.
Confirm standard specifications, alternative materials, custom processing methods, quantities, and feasibility.
After confirming the price and delivery date, arrange for stocking, procurement, or processing.
Shipment completed; any subsequent requests regarding specifications, substitutions, or additional orders can be handled at a later time.