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V-Ring Seal Manufacturer and Supplier
Quick Answer: CORASEALS supplies V-ring seals from manufacturing partners for gearboxes, motors, pumps, shafts, and bearing housings. V-ring seals are selected by shaft diameter, material, temperature, speed, and counterface condition. Send the shaft diameter, current part code or sample photo, material, medium, and required quantity for a quotation.
What Is a V-Ring Seal?
A V-ring seal is a rubber axial lip seal that fits on a rotating shaft. The seal body grips the shaft and rotates with the shaft. The flexible lip contacts a stationary flat surface such as a bearing face, housing wall, or counterface. The V-ring deflects water, dust, oil splash, and dirt. The same seal can retain grease in a bearing or gearbox housing.
A V-ring seal is not a radial oil seal. The V-ring does not seal high internal pressure. The sealing contact is axial. V-ring seals are used as flingers, dust rings, and grease retainers in low and moderate speed applications.
V-Ring Seal Applications
V-ring seals are used on electric motors, gearboxes, pumps, conveyors, agricultural shafts, textile machines, industrial fans, and steel mill rolls. The seal works well in dirty and wet conditions where the shaft may be exposed to splash and solid particles.
Common purchase situations include gearbox oil leakage, bearing housing contamination, motor shaft dust ingress, and replacement of worn V-ring seals in agricultural equipment.
V-Ring Seal Type Codes and Sizing
V-ring seals are specified by shaft diameter. Many suppliers use type codes such as VA, VS, VL and VE. These codes are not identical in every catalog. The code may describe the cross section, fitted width, outside diameter, and shaft diameter range. Always confirm the shaft diameter range and lip dimensions before ordering.
Send the following details for selection:
- Shaft diameter or shaft diameter range
- Current V-ring type code such as VA, VS, VL or VE
- Outside diameter and fitted width if available
- Counterface diameter and condition
- Material compound
V-ring seals can often fit a small shaft diameter range because the rubber body stretches and grips the shaft. The counterface must be flat, smooth, and free of sharp edges.
V-Ring Seal Material Options
The main materials for V-ring seals are NBR, FKM, EPDM, and HNBR. The material changes resistance to oil, heat, water, ozone, chemicals, and weather.
| Material | Typical use | Key limitation |
|---|---|---|
| NBR | Mineral oil, grease, water splash, general dust exclusion | Not for high temperature or ozone exposure |
| FKM | Higher temperature, mineral oil, many chemicals | Higher cost, not for every polar solvent |
| EPDM | Water, steam, weather, ozone, outdoor equipment | Not suitable for most mineral oil and fuel |
| HNBR | Oil, heat, abrasion, tougher mechanical conditions | Not for aromatic solvents |
EPDM is not suitable for most mineral oil and fuel contact. FKM is often selected for higher temperature and chemical resistance. HNBR offers better abrasion and heat resistance than standard NBR. CORASEALS can source special compounds when the standard material range does not match the application.
V-Ring Seal Installation and Performance Limits
The V-ring is stretched over the shaft and positioned so the lip contacts the counterface. The lip should be flexed only enough to maintain light contact. Too much axial compression increases friction and heat. Too little contact reduces sealing performance.
The counterface surface finish must be smooth and the face must be perpendicular to the shaft axis. Shaft runout, eccentrici