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Quick Answer: CORASEALS supplies pneumatic seal kits and individual pneumatic seals for air cylinders, actuators, valves and air control equipment. Send the cylinder bore, rod diameter, groove dimensions, operating pressure, temperature, air quality and seal profile to receive a quotation based on drawings or samples.
Pneumatic seal kits combine rod seals, piston seals, wiper seals, O-rings, wear rings and backup rings in one package. The kit is normally selected to match a specific cylinder or actuator model. CORASEALS can supply kits for double-acting cylinders, single-acting cylinders, rotary actuators and pneumatic valves.
Pneumatic Seal Kit Scope
A pneumatic seal kit should cover the wearing and sealing parts inside a cylinder. The exact kit content depends on the cylinder drawing or the original seal list. Common parts include:
When you compare a pneumatic seal kit manufacturer or supplier, do not only match the cylinder model. Confirm the groove dimensions, seal profile and material before ordering. Model codes can change between catalog systems.
Material Selection for Pneumatic Seals
Pneumatic sealing depends on air quality, oil mist, temperature and sliding speed. The material must handle compressed air, possible water, and the specific lubrication method used in the cylinder or valve.
| Material | Typical Pneumatic Function | Selection Note |
|---|---|---|
| NBR | O-rings, static seals, piston seals | Good air and oil mist resistance. Common for general pneumatic cylinders. |
| FKM | High temperature air circuits, aggressive air contaminants | Higher temperature capability than NBR. Higher cost. |
| Polyurethane | Rod seals, wiper seals, piston seals, wear rings | Good abrasion resistance. Check hydrolysis risk with hot water or high humidity. |
| PTFE | Low friction seals, dry running air circuits | May need a separate energizer. Lower elasticity than rubber. |
| EPDM | Air and water service without mineral oil mist | Do not use where petroleum oil mist is present. |
| Silicone | Low temperature air circuits, static O-rings | Limited tear and abrasion resistance. Use for static or slow dynamic service. |
Hardness for pneumatic O-rings is usually selected from 70 Shore A to 90 Shore A. The correct hardness depends on the gland dimensions and the extrusion gap. Confirm the seal material and hardness with the groove drawing before replacement.
Pneumatic Seal Kit Selection Data
To select or quote a pneumatic seal kit, we need more than the cylinder model. Operating pressure, rod speed, temperature and air quality change the material choice. For example, oil-free air circuits may need low friction PTFE based seals. Lubricated circuits may accept NBR or polyurethane designs with standard friction properties.
Send the following data with your inquiry:
If the drawing is not available, send the seal list, the cylinder maker and the model code. We help identify the profiles by dimensions and cross section shape. Standard type codes such as UN, UHS, KDAS or other catalog codes can help, but we always verify the section drawing and dimensions before quoting.
Applications We Support
CORASEALS supplies pneumatic seal kits for general factory automation, packaging equipment, food and beverage machinery, pharmaceutical line actuators, valve automation, rail door systems, bus door systems, textile machinery and other air powered equipment. For food contact or washdown areas, confirm FDA or 3A requirements before ordering.
RFQ and Custom Kit Service
If you have a failed seal sample or a cylinder drawing, our team can match the profiles and propose a kit. We also supply individual pneumatic seals, so you do not have to buy a full kit when only the rod seal or piston seal is worn.
Send us the seal type, material, ID × OD × width, operating temperature, pressure, medium, shaft speed, drawing, sample photo and required quantity. For cylinder seal kits, send the cylinder bore, rod diameter, groove dimensions, pressure, speed, air quality and seal profile.
1. What is included in a pneumatic seal kit?
A typical kit includes rod seals, piston seals, wiper seals, O-rings, wear rings and backup rings. The final list depends on the cylinder drawing or seal list.
2. Can you supply pneumatic seal kits from a sample or a drawing?
Yes. Send a drawing, sample photo or the original seal list. We match the profile and material by measurement.
3. Which material is best for pneumatic cylinder seals?
There is no single best material. NBR and polyurethane cover many general pneumatic cylinders. Select FKM for higher temperature air, PTFE for low friction dry running circuits, and EPDM only when no petroleum oil mist is present.
4. What data do you need to quote a pneumatic seal kit?
Send the cylinder bore, rod diameter, groove dimensions, pressure, temperature, air quality, lubrication method, seal profile, drawing and quantity.
5. Do you supply individual pneumatic seals, not only kits?
Yes. We supply O-rings, rod seals, piston seals, wiper seals, wear rings and other pneumatic sealing components as separate line items.
