The Oil Seal 40x55x7 NBR TC (40x55x7 mm) renews the sealing on a 40 mm shaft where grease or oil must stay in and grit must stay out — a typical fitment in electric motors, gearboxes, pumps and agricultural machinery.
Specifications
| Inner diameter (shaft) | 40 mm |
| Outer diameter (bore) | 55 mm |
| Width | 7 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
TC is the standard rotary-shaft profile for good reason: a rubber OD seals the bore side, a spring-loaded lip seals the shaft side, and a dust lip extends service life in dirty environments.
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.
Order details
- 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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