One 20x46x8 mm part does the sealing: the Oil Seal 20x46x8 NBR TC wraps a 20 mm shaft in its spring-loaded lip and presses firmly into a 46 mm bore — the kind of fit seen across micro motors, angle grinders, cooling pumps and compact gear reducers.
Size and material details
| Inner diameter (shaft) | 20 mm |
| Outer diameter (bore) | 46 mm |
| Width | 8 mm |
| Seal type | TC — double lip, rubber covered, garter spring |
| Material | NBR – Nitrile |
| Temperature range | -30 °C … +100 °C |
Why the TC profile is so widely used
TC is the standard rotary-shaft profile for good reason: a rubber OD seals the bore side, a spring-loaded lip seals the shaft side, and a dust lip extends service life in dirty environments.
Material: NBR – Nitrile
Made of NBR (acrylonitrile-butadiene rubber), the seal tolerates the mineral oils and lithium greases that lubricate most machinery. Standard practice: keep NBR away from brake fluid, and store unused seals in their bag, out of sunlight.
It is normal for a shaft to measure a few tenths of a millimetre smaller than nominal; the sealing lip is engineered to take up that difference.
Purchase and delivery notes
- Price is for 1 piece — order any quantity, no minimum; listed in US dollars.
- Any import duty or tax imposed by your country is the buyer’s responsibility and excluded from our prices.
- Flat-rate shipping to every country · tracking number sent by email.
- For a size check, How to measure an oil seal walks you through it, or send us your dimensions for free advice.
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