The 30x70x12 mm Oil Seal 30x70x12 NBR TC keeps lubricant circulating where it belongs — inside the housing — on the 30 mm shafts and 70 mm bores typical of workshop motors, helical gearboxes, vane pumps and tractor attachments.
Dimensions & specifications
| Inner diameter (shaft) | 30 mm |
| Outer diameter (bore) | 70 mm |
| Width | 12 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
The TC arrangement — rubber-covered case, garter-spring main lip, external dust lip — is the industry’s go-to solution wherever a shaft spins in an oil-filled housing.
Why NBR for this seal
NBR nitrile rubber gives the lip its resistance to mineral oils, greases and hydraulic fluids — exactly the fluids a gearbox or pump seal meet. It is the industry’s general-purpose choice; just keep it clear of brake fluid and direct sun when storing.
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.
Order details
- 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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