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Hydraulic Seals Manufacturer and Supplier for Cylinder Sealing Systems
Quick Answer: CORASEALS is a hydraulic seals manufacturer and supplier for rod seals, piston seals, wiper seals, buffer seals, wear rings, guide rings, U-cup seals, V-packing, compact seals and hydraulic cylinder seal kits. We support hydraulic cylinder repair, OEM replacement and new build projects. Send the rod diameter, bore diameter, groove dimensions, pressure, speed, hydraulic fluid and seal profile to get a quotation.
Hydraulic sealing systems keep pressure on the working side and keep contamination out of the cylinder. A single hydraulic cylinder uses more than one seal type. The rod seal holds pressure. The wiper seal cleans the rod. The piston seal controls flow between the piston and bore. Wear rings and guide rings carry radial load and prevent metal contact. CORASEALS supplies these seals as individual parts or as a complete hydraulic cylinder seal kit.
International buyers searching for a hydraulic seals manufacturer in China can use CORASEALS as one contact for profiles, materials, dimensional checks and export documentation. Dimensions can be quoted in metric or inch units.
Hydraulic Seals Manufacturer Supply Range
The product range is structured around hydraulic cylinder sealing systems and pneumatic sealing systems. CORASEALS supplies the following profiles.
- Rod seals and piston seals
- Wiper seals and scraper seals
- Buffer seals and compact seals
- Wear rings and guide rings
- U-cup seals and V-packing
- O-rings and backup rings for static glands
- Hydraulic cylinder seal kits
- Pneumatic seals for air cylinders and valves
Profile Codes Need a Dimension Check
Type codes such as TC, UN, UHS, HBY and KDAS are not universal drawings. Different manufacturers use different groove widths and lip geometries for the same code. CORASEALS checks the drawing, cross section and gland before quoting a replacement. This check prevents a seal from fitting the groove but failing in pressure or speed.
Hydraulic Seal Profiles and Selection Points
| Seal profile | Function | Main selection data |
|---|---|---|
| Rod seal | Seals pressure on the rod side | Rod diameter, pressure, speed, fluid |
| Piston seal | Seals between piston and bore | Bore diameter, groove width, pressure direction |
| Wiper seal or scraper | Removes contamination from the rod | Rod OD, contamination type, external conditions |
| Buffer seal | Absorbs pressure spikes before the rod seal | Pressure peaks, cushioning, rod diameter |
| Wear ring or guide ring | Guides the piston or rod | Radial load, clearance, stroke length |
| U-cup seal | Works as a rod or piston seal | Gland dimensions, pressure direction |
| V-packing | Adjustable sealing for rods or pistons | Packing space, compression, gland depth |
Materials for Hydraulic Seals
The correct material depends on the hydraulic fluid, operating temperature, pressure cycle and speed. Do not select a material by color or hardness alone. The table below shows common material selection points.
| Material | Common use | Main limitation to check |
|---|---|---|
| NBR | Mineral oil hydraulic systems | Temperature and chemical resistance limits |
| FKM | Higher temperature oil and fuel contact | Cost and low temperature performance |
| EPDM | Water-based fluids and phosphate ester< |