Sized 20x45x8 mm (inner × outer × width), the Oil Seal 20x45x8 NBR TC seals a 20 mm shaft running in a 45 mm bore. This size turns up often in household appliance motors, power tools, aquarium pumps and small gear drives.
Dimensions & specifications
| Inner diameter (shaft) | 20 mm |
| Outer diameter (bore) | 45 mm |
| Width | 8 mm |
| Seal type | TC — double lip, rubber covered, garter spring |
| Material | NBR – Nitrile |
| Temperature range | -30 °C … +100 °C |
About the TC profile
Every TC seal combines three elements: a rubber-covered case that grips the bore, a spring-loaded sealing lip that follows shaft runout, and a dust lip that shields the main lip from contamination.
Why NBR for this seal
NBR (Nitrile) is the standard compound for general industrial sealing. It handles mineral oils, greases and hydraulic fluids, which is why it is the default choice in gearboxes, electric motors and pumps. Keep it away from brake fluid, and store spare seals out of direct sunlight.
Should the shaft read slightly below the listed size — typically a few tenths of a millimetre — no concern: the lip’s interference fit accounts for it.
Ordering & delivery
- Individual pieces, no minimum order — checkout in US dollars.
- Our prices do not cover customs duties or taxes your country may apply; those fall to the buyer.
- One worldwide flat shipping fee · every parcel tracked, number emailed.
- Before you buy, confirm the fit: measuring guide or free dimension check.
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