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Pneumatic Seal Kit Manufacturer and Supplier
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:
- Rod seals and rod wiper or scraper seals
- Piston seals, including cushion seals where fitted
- O-rings for static joints, end caps, ports and adjustment screws
- Wear rings and guide rings for the rod and piston
- Backup rings where extrusion gaps or pressure spikes exist
- Valve seals for pneumatic valves and spool assemblies where required
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:
- Cylinder bore and rod diameter
- Groove width, groove diameter and housing bore
- Operating pressure in bar or MPa
- Operating temperature range
- Air quality and lubrication method
- Rod speed in m/s where applicable
- Rod surface finish and runout for dynamic rod seals
- Seal profile, drawing or sample photo<