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Oil Seals Manufacturer: Sourcing, Materials, and RFQ Guide from CORASEALS
Quick Answer: Buyers looking for an oil seals manufacturer or supplier can source standard and custom shaft seals through CORASEALS. Send the shaft diameter, housing bore, seal width, fluid, operating temperature, shaft speed, lip type, and required quantity. CORASEALS supplies oil seals, rotary shaft seals, radial shaft seals, lip seals, cassette seals, and related shaft sealing products.
Oil Seal Products Supplied by CORASEALS
CORASEALS covers oil seals for rotating shaft positions in industrial equipment. The supply scope includes rotary shaft seals, radial shaft seals, lip seals, V-rings, cassette seals, bearing seals, wheel hub seals, axle seals, gearbox seals, floating seals, and mechanical face seals. Buyers can request oil seals with different case designs, lip configurations, spring arrangements, and rubber OD or metal OD forms.
Dimension Order and Shaft Seal Profiles
Oil seal selection starts with the shaft diameter and the housing bore. The common dimension order is ID × OD × width. Always state the unit in millimetres or inches. For example, a seal for a 40 mm shaft and a 62 mm bore may be written as 40 × 62 × 10 mm, but the width must be confirmed from the equipment drawing or the old seal sample.
Type codes such as TC, SC, or cassette profiles can support communication across catalogs, but the codes are not enough for interchange confirmation. Different suppliers may assign different interpretations to the same code. The section drawing, lip design, case material, and complete dimensions must be checked.
Oil Seal Material Selection
Oil seal material selection depends on the fluid, temperature range, shaft speed, and pressure. NBR works for many general mineral oil applications. FKM is selected for higher temperature oil, fuel, and chemical exposure. HNBR can provide better heat and wear resistance than general NBR. EPDM suits water and steam applications but is not suitable for most mineral oil systems. PTFE and filled PTFE are used where chemical resistance and low friction are required. Polyurethane can provide good abrasion resistance in high-wear hydraulic environments.
| Material | Common Use | Selection Notes |
|---|---|---|
| NBR | General rotating shaft seals and mineral oil | Check temperature and additive compatibility. |
| FKM | High temperature oil and fuel seals | Compound selection matters for acids and steam. |
| HNBR | Automotive, gearbox, and high-wear oil seals | Better heat and wear resistance than many NBR compounds. |
| EPDM | Water, steam, and brake fluid seals | Not for most mineral oils. |
| Silicone | High temperature and some low-speed applications | Lower tear strength than many other sealing materials. |
| PTFE | Chemical service and low friction shaft seals | Shaft finish and housing design are critical. |
| Polyurethane | Hydraulic and high-wear rotary applications | Check high humidity and water compatibility. |
This table is a general selection guide. Final material choice must be confirmed against the fluid, temperature range, shaft speed, and compound data.
For high temperature oil seal applications, FKM, HNBR, or PTFE may be suitable depending on the temperature and fluid. For chemical resistant oil seal applications, FKM or PTFE compounds are often reviewed. The final selection must match the compound data and the real operating condition.
Pre-Order Checks for Oil Seal Reliability
Oil seal failures are often caused by installation damage, shaft surface condition, excessive runout, or fluid incompatibility. Before