Current position > Contact Us
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.
CORASEALS supplies pneumatic seals for standard cylinders, compact cylinders, round body cylinders, and custom pneumatic actuators. The common profiles include the following.
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.
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.
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.
For pneumatic cylinder seal kits, also send the cylinder part number, brand, bore, stroke, and photos of the old seals. If the cylinder is custom, send the groove drawing or a physical sample.
Use millimeters for dimensions. Use bar or MPa for pressure. Use degrees Celsius for temperature. Include both dynamic and static sealing positions when the cylinder has more than one seal location.
Pneumatic cylinder seal leakage often comes from more than one source. The seal material may be wrong for the air temperature. The rod may have scratches or pitting. The groove may be too wide or too deep. The cylinder may have excessive side load or misalignment.
Worn wiper seals allow dust to reach the rod seal. Hardened polyurethane can crack after long exposure to high cycle rates or contaminated air. NBR can soften if the compressor oil mist is not compatible. FKM may be needed when oil mist is aggressive or when the cylinder runs near a heat source.
Before replacing a seal, check the rod surface, bore surface, cushion seal, and wear ring clearance. A new seal will not fix a damaged rod or a worn guide ring.
CORASEALS helps global buyers consolidate pneumatic seal requirements across different profiles and materials. We supply rod seals, piston seals, wipers, wear rings, O-rings, and pneumatic cylinder seal kits. We support OEM replacement, maintenance repair, and custom groove matching from drawings or samples.
We do not rely on a single material type. The same cylinder model may need NBR for standard air service, polyurethane for high cycle wear, or FKM for high temperature air. The quotation uses the operating condition and groove data to select the correct material.
CORASEALS works with industrial buyers, cylinder repair shops, distributors, and equipment builders. You can send one inquiry with multiple seal positions or multiple cylinder models.
What information does CORASEALS need to quote pneumatic cylinder seals?
Send the cylinder bore, rod diameter, groove dimensions, operating pressure, temperature, air quality, seal profile, sample photo, and required quantity.
Can CORASEALS supply complete pneumatic cylinder seal kits?
Yes. CORASEALS supplies kits for specific cylinder part numbers and custom kits based on old seal samples or groove drawings. Send the cylinder part number, bore, stroke, and photos if possible.
What material is best for pneumatic cylinder rod seals?
Standard air cylinders often use polyurethane or NBR. High temperature cylinders or aggressive oil mist may require FKM. The groove dimensions and surface finish affect the final choice.
Does CORASEALS keep stock for common pneumatic seal sizes?
Availability is checked after receiving the size, profile, and quantity. CORASEALS cannot confirm stock status until the exact dimensions and material are matched.
Can CORASEALS match pneumatic seals from drawings or samples?
Yes. Send the drawing, groove dimensions, material requirement, and sample photo. For custom cylinders, a physical sample can help verify the cross section and lip geometry.
Request a pneumatic cylinder seal quotation by sending the cylinder bore, rod diameter, groove dimensions, operating pressure, temperature, air quality, seal profile, sample photo, and required quantity. CORASEALS will match the seal type and material to the cylinder condition.
