If your 42 mm shaft is weeping oil, the Oil Seal 42x85x8 NBR TC — a TC spring-loaded seal at 42x85x8 mm — restores the barrier between the 85 mm housing and the outside world. A staple size for workshop motors, helical gearboxes, vane pumps and tractor attachments.
Size and material details
| Inner diameter (shaft) | 42 mm |
| Outer diameter (bore) | 85 mm |
| Width | 8 mm |
| Seal type | TC — double lip, rubber covered, garter spring |
| Material | NBR – Nitrile |
| Temperature range | -30 °C … +100 °C |
Inside the TC double-lip design
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.
About the NBR nitrile compound
The seal lip is moulded from NBR, a nitrile rubber prized for resistance to mineral oil, grease and hydraulic fluids — the default elastomer for general machinery. It should not meet brake fluid, and stored spares fare best away from UV light.
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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