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Pneumatic Cylinder Seal Manufacturer in China
Quick Answer: CORASEALS supplies pneumatic cylinder seals from China for cylinder repair, OEM production, and seal replacement. The range includes rod seals, piston seals, wiper seals, buffer seals, wear rings, and pneumatic cylinder seal kits. Send the cylinder bore, rod diameter, groove dimensions, operating pressure, temperature, air quality, and required quantity to get a quotation.
Buyers searching for a pneumatic cylinder seal manufacturer in China often need more than one seal profile. A pneumatic cylinder has multiple sealing positions. The rod seal, piston seal, wiper, cushion seal, wear ring, and static O-ring must work together. CORASEALS supplies these sealing positions from one product range.
Pneumatic Cylinder Seal Profiles Supplied by CORASEALS
CORASEALS supplies pneumatic seals for standard cylinders, compact cylinders, round body cylinders, and custom pneumatic actuators. The common profiles include the following.
- Rod seals: single acting and double acting profiles in polyurethane or NBR.
- Piston seals: U cup seals, compact seals, and O-ring energized profiles.
- Wiper seals and scrapers: used to keep dust and contamination away from the rod seal.
- Buffer seals: used before the main rod seal in high cycle pneumatic cylinders.
- Wear rings and guide rings: used to reduce metal contact and improve rod and piston alignment.
- Static O-rings: used in end caps, cushion sleeves, and port sealing positions.
- Pneumatic cylinder seal kits: grouped sets for specific cylinder models or custom repair jobs.
Do not select a pneumatic seal by type code alone. Codes such as TC, SC, UN, UHS, and KDAS can have different groove definitions in different catalogs. Always confirm the cross section, ID, OD, height, and groove shape before ordering.
Material Selection for Pneumatic Cylinder Seals
Air is the usual medium in pneumatic cylinders. Many pneumatic cylinders use NBR or polyurethane seals. FKM is used when temperature or chemical resistance is higher. HNBR can replace NBR where heat and wear are more demanding. The correct material depends on air temperature, oil mist, lubrication, piston speed, and cycle rate.
| Material | Common Temperature Range | Common Pneumatic Use |
|---|---|---|
| NBR | -30°C to 100°C | General air cylinders, static O-rings, standard rod and piston seals |
| Polyurethane / TPU | -35°C to 110°C | Rod seals, piston seals, wipers, high wear applications |
| FKM | -20°C to 200°C | High temperature cylinders or aggressive air and oil mixtures |
| HNBR | -30°C to 150°C | Higher heat resistance than NBR and better wear resistance |
These temperature ranges are common material guidelines. The actual service range changes with the compound, seal profile, and operating pressure. Always confirm the material datasheet against the cylinder condition.
Dimensions and Quotation Data for Pneumatic Cylinder Seals
Pneumatic cylinder seal selection starts with the cylinder bore and rod diameter. Groove dimensions decide the seal profile. Without groove data, a quotation may be delayed or incorrect.
Send the following information for a pneumatic cylinder seal quotation.
- Cylinder bore and rod diameter
- Groove ID, groove OD, groove width, and groove depth
- Seal height and current seal profile or sample photo
- Operating pressure and temperature
- Air quality: dry air, lubricated air, oil mist, or outdoor air
- Stroke length and cycle rate, if known
- Required quantity and target delivery time
For pneumatic cylinder seal kits, also send the cy