Replace the worn seal on a 55 mm shaft with the Oil Seal 55x75x8 NBR TC — 55x75x8 mm, TC profile, NBR compound — it drops into a 75 mm bore and stops the leak. Popular in heavy-duty gearboxes, conveyor drums and large pump shafts.
Dimensions & specifications
| Inner diameter (shaft) | 55 mm |
| Outer diameter (bore) | 75 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
Its TC construction pairs a rubber-covered OD (a snug press-fit in the bore) with a spring-energised sealing lip and a separate dust lip, so both oil retention and contamination exclusion are covered.
NBR nitrile rubber at a glance
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.
Should the shaft read slightly below the listed size — typically a few tenths of a millimetre — no concern: the lip’s interference fit accounts for it.
Purchase and delivery notes
- Individual pieces, no minimum order — checkout in US dollars.
- Our prices do not cover customs duties or taxes your country may apply; those fall to the buyer.
- One worldwide flat shipping fee · every parcel tracked, number emailed.
- Before you buy, confirm the fit: measuring guide or free dimension check.
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