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Quick Answer: CORASEALS is a rotary seals supplier for oil seals, radial shaft seals, lip seals, V-rings, cassette seals, bearing seals, wheel hub seals, axle seals, gearbox seals and floating seals. Send the shaft diameter, housing bore, width, operating conditions and required quantity to get a selection and quotation.
CORASEALS supplies rotary shaft seals for maintenance teams, distributors, repair shops and OEM buyers. We focus on matching the seal profile, material, dimensions and lip configuration to the equipment operating conditions.
CORASEALS can supply standard and custom rotary seal styles. The common types include:
Type codes such as TC, SC, TB, VB and DC are common in the market. CORASEALS does not rely only on a type code to confirm interchange. We check the cross section, case design, lip arrangement and material against the application before quoting.
Rotary seal selection is not only based on size. The shaft condition, lip material, shaft speed, temperature and sealed medium decide whether a standard seal will work. For a quotation, send the following information:
If you are replacing a failed seal, also describe the failure mode. High wear, lip hardening, cracking, leakage after short life and housing damage often point to a material or application problem.
The most common rotary seal material is NBR. It handles many mineral oil and grease applications. FKM is normally selected when the temperature or chemical resistance requirement exceeds NBR capability. HNBR offers better heat and wear resistance than standard NBR in some equipment. EPDM is used for water, steam and brake fluid, but EPDM is usually not suitable for mineral oil. PTFE lip seals are used for low friction, dry running or chemically aggressive media.
| Material | Common Use | Selection Note |
|---|---|---|
| NBR | Mineral oil, gear oil, grease | Common first choice for many oil seals. Confirm compound limits. |
| HNBR | Higher heat, abrasive oil | Better heat and wear resistance than standard NBR compounds. |
| FKM | High temperature, chemical exposure | Specify FKM when NBR cannot meet the operating conditions. |
| EPDM | Water, steam, brake fluid | Usually not suitable for mineral oil or fuel service. |
| Silicone | Low torque, wide temperature | Not normally used for high pressure unless the seal is designed for it. |
| PTFE lip | Low friction, chemical resistance, dry running | Requires careful shaft surface, runout and housing alignment review. |
Seal hardness, spring load and lip geometry are also important. A harder lip may improve wear in some conditions but may not follow shaft runout as well. A softer lip may reduce leakage risk on low pressure applications but may wear faster in abrasive media.
Many rotary shaft seals are ordered according to DIN 3760 or ISO 6194. Some inch sizes follow industrial equipment part numbering. CORASEALS works with both metric and inch dimensions. If you only have an old seal marking, send a clear photo of the marking and caliper measurements. The markings can help identify the standard, but the markings do not always define the exact lip material and spring type.
Standard rotary shaft seals are not normally designed for positive housing pressure. If the housing pressure is positive, a special lip design, reinforced case or support ring may be required. Confirm the pressure condition before ordering.
CORASEALS supplies rotary seals for gearboxes, pumps, motors, axles, wheel hubs, agricultural spindles, construction equipment, mining equipment, marine equipment and general rotating equipment. The correct seal for a final drive may be a floating seal or a cassette seal. A high speed motor shaft may require a PTFE lip or a special radial shaft seal design. A pump shaft with chemical exposure may require FKM or PTFE.
When you send an inquiry to CORASEALS, include the seal type, shaft diameter, housing bore, width, operating temperature, medium, shaft speed, pressure, material preference, drawing, sample photo and required quantity. For an old seal replacement, send the ID × OD × width and a clear photo of the marking. We will use the shaft diameter and housing bore to check the fit, then confirm the profile and material for the operating conditions.
Send us the seal type, shaft diameter, housing bore, width, operating temperature, pressure, medium, shaft speed, drawing, sample photo, and required quantity.
A rotary seal is a seal installed between a rotating shaft and a stationary housing. The seal keeps oil or grease inside while keeping dirt, dust and water outside. Common types include oil seals, radial shaft seals and lip seals.
In many catalogs the two terms overlap. An oil seal usually describes a lip seal with a flexible sealing lip and often a garter spring. A rotary shaft seal is the broader category that includes oil seals, cassette seals and other rotating shaft sealing designs.
Measure the shaft diameter at the seal contact area, the housing bore and the seal width. If an old seal is available, measure the outside diameter, inside diameter and width. Send the shaft diameter and housing bore with the old seal dimensions.
NBR is the most common material for mineral oil and grease. FKM is used for higher heat or chemical exposure. EPDM is used for water and steam but is usually not suitable for mineral oil. The best material depends on the actual medium, temperature and speed.
Yes. CORASEALS can source and supply custom rotary seal sizes, materials and profiles. Send the shaft diameter, housing bore, width, operating conditions, drawing or sample photo, and required quantity.
