A 18x40x10 mm TC double-lip seal moulded in NBR nitrile rubber: the Oil Seal 18x40x10 NBR TC restores tight sealing on 18 mm shafts and 40 mm bores used in household appliance motors, power tools, aquarium pumps and small gear drives.
Size and material details
| Inner diameter (shaft) | 18 mm |
| Outer diameter (bore) | 40 mm |
| Width | 10 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 seals work with a triple defence — a rubber-coated case seating tightly in the bore, a main lip held against the shaft by a garter spring, and an outer dust lip that keeps abrasive particles away.
Why NBR for this seal
This is an NBR-nitrile seal — the everyday elastomer for oil-lubricated equipment, compatible with mineral oils, greases and hydraulic media. For longest life, avoid brake fluid contact and store spares away from direct sunlight.
Don’t worry if your micrometer shows the shaft a few tenths under size — the garter-sprung lip is designed to seal against exactly that condition.
Purchase and delivery notes
- Sold individually — buy one or one hundred, all prices in USD.
- Where customs charges duties or taxes on entry, the buyer covers them; they are not part of our pricing.
- Ships worldwide at one flat rate · tracking number provided by email.
- For sizing help, use how to measure an oil seal or send us your dimensions — free pre-sale checks.
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