Instalar un sello de aceite incorrectamente puede provocar fallas prematuras, fugas de aceite y costosos tiempos de inactividad. Ya sea que esté reemplazando un sello de cigüeñal o montando un sello de eje rotatorio, la instalación correcta... instalación del sello de aceite es crítico
In this guide, I’ll show you how to install oil seals the right way—without damaging the lips or misaligning the casing. This article covers tools, step-by-step procedures, lip direction, sealing surface prep, and tips for ensuring long-lasting performance.
What tools are needed for oil seal installation?
No necesitas un taller entero, pero usar las herramientas adecuadas marca la diferencia.
| Herramienta | Función |
|---|---|
| Instalador de sellos de aceite / Herramienta de prensado | Aplica una presión uniforme sin dañar el sello. |
| mazo de goma | Golpee suavemente si la herramienta de instalación no está disponible |
| Disolvente de limpieza | Prepara la superficie del eje para el sellado. |
| Lubricante (por ejemplo, aceite de motor) | Ayuda a que el sello se deslice en su lugar |
| Destornillador de punta plana / púa | Quita el sello viejo con cuidado |
| Micrómetro / Calibre | Verifica que el tamaño del eje y del orificio coincidan |
Some kits include their own installer. You can also choose a universal press tool when ordering replacement seals like our Sello de aceite TG4.
What direction should the oil seal face to prevent leaks?
Installing backward is the most common mistake.
- Labio de sellado principal siempre mira hacia el lado del fluido o aceite (hacia adentro)
- Borde antipolvo (si lo hay) faces outward, toward contaminants
For skeleton seals like TG4 o Sello de aceite TC, inspect the lip curvature: the spring side always faces oil.
How to install an oil seal without leaks: full process
-
Retire el sello viejo
Use a puller or flat screwdriver. Avoid damaging the housing. -
Clean bore and shaft
Remove oil, dirt, and rust using solvent and lint-free wipes. -
Inspect shaft
Busque rayones o ranuras: púlalos ligeramente si es necesario. -
Lubricate lips
Apply a thin coat of oil or grease—never install dry. -
Alinee el nuevo sello
Center it squarely over the bore opening. -
Presione o golpee uniformemente
Use a seal installer or socket. Do not hammer the center. -
Confirm flush seating
Outer edge should be level or slightly recessed—not protruding. -
Double-check orientation
Ensure the spring side faces oil and dust lip faces out.
Working on more complex components? Check our Guía de reemplazo del sello de aceite del cigüeñal for deeper instructions.
Can damaged oil seals be reused?
Never reuse old or deformed oil seals—even minor lip damage leads to leaks. Replacement is essential, especially when servicing timing covers or differentials.
We stock quality replacement seals in NBR and FKM, including OEM types. Explore our TC y TG4 opciones.
Do you need sealant when installing oil seals?
Usually, No — but exceptions include:
| Condición | Sealant Required? |
|---|---|
| Agujero de metal liso | ❌ No |
| Worn or oversize housing | ✅ Utilice Loctite o sellador de bridas |
| Static rubber-coated seals (TG4) | ❌ No |
| High-vibration areas | ✅ Light non-hardening sealant on outer edge |
Avoid getting sealant on the lip.
Conclusión
Correct oil seal installation ensures leak-free performance and longer service life. Use the right tools, align lips correctly, and never install dry.
Ready for high-quality oil seal replacements?
We offer durable NBR and FKM shaft seals in all sizes. OEM and custom orders supported.
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Related topics
TC Skeleton Oil Seal – Metal Shell
TG4 Double-Lip Rotary Oil Seal
Guía de reemplazo del sello de aceite del cigüeñal
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