L'installazione non corretta di un paraolio può portare a guasti prematuri, perdite di olio e costosi tempi di fermo. Che tu stia sostituendo un paraolio dell'albero motore o montando un paraolio rotante, un'installazione corretta installazione paraolio è fondamentale.

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?

Non serve un laboratorio intero, ma usare gli strumenti giusti fa la differenza.

Some kits include their own installer. You can also choose a universal press tool when ordering replacement seals like our Guarnizione TG4.

What direction should the oil seal face to prevent leaks?

Installing backward is the most common mistake.

• Labbro di tenuta principale sempre rivolto verso il lato fluido o olio (verso l'interno)
• Labbro antipolvere (se presente) faces outward, toward contaminants

For skeleton seals like TG4 O Guarnizione TC, inspect the lip curvature: the spring side always faces oil.

How to install an oil seal without leaks: full process

1. Rimuovere il vecchio sigillo
   Use a puller or flat screwdriver. Avoid damaging the housing.

2. Clean bore and shaft
   Remove oil, dirt, and rust using solvent and lint-free wipes.

3. Inspect shaft
   Controllare che non vi siano graffi o scanalature: lucidare leggermente se necessario.

4. Lubricate lips
   Apply a thin coat of oil or grease—never install dry.

5. Allineare il nuovo sigillo
   Center it squarely over the bore opening.

6. Premere o picchiettare uniformemente
   Use a seal installer or socket. Do not hammer the center.

7. Confirm flush seating
   Outer edge should be level or slightly recessed—not protruding.

8. Double-check orientation
   Ensure the spring side faces oil and dust lip faces out.

Working on more complex components? Check our Guida alla sostituzione del paraolio dell'albero motore 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 E TG4 opzioni.

Do you need sealant when installing oil seals?

Usually, NO — but exceptions include:

Avoid getting sealant on the lip.

Conclusione

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.
📧 E-mail: [email protected]
📱 WhatsApp: +86 17622979498

Related topics

TC Skeleton Oil Seal – Metal Shell
TG4 Double-Lip Rotary Oil Seal
Guida alla sostituzione del paraolio dell'albero motore

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