The Oil Seal 30x68x7 NBR TC (30x68x7 mm) renews the sealing on a 30 mm shaft where grease or oil must stay in and grit must stay out — a typical fitment in motor shafts, gearbox input stages, centrifugal pumps and tillers.
Specifications
| Inner diameter (shaft) | 30 mm |
| Outer diameter (bore) | 68 mm |
| Width | 7 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
Three features define the TC type: the rubber outer case that fills small bore imperfections, the garter-spring-loaded lip that maintains contact under runout, and the auxiliary lip that acts as a dirt barrier.
Material: NBR – Nitrile
The compound is NBR nitrile, selected for oil-and-grease compatibility across motors, reducers and pumps. Note the limits: brake fluid degrades nitrile, and sunlight ages stored rubber — so store spares dark and dry.
If your shaft measures a few tenths of a millimetre under the nominal size, that is normal — the sealing lip is designed with interference for exactly that.
Buying & shipping information
- Each listing is for one seal — no MOQ, all prices in US dollars.
- Import duties or taxes, if levied by your customs, are paid by the buyer and are not included in the price.
- Worldwide shipping at a single flat rate, with a tracking number emailed to you.
- To double-check the size, read how to measure an oil seal or contact us with your dimensions — size checks before purchase are free.
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