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26X40X5-NBR-R21 Metric Nitrile Oil Seal

£2.22 £1.85
In stock


Part Number: 26X40X5-NBR-R21
Manufacturer: Unbranded
Product Type: Metric Nitrile Oil Seal
Basic Dimension(s): 26mm X 40mm X 5mm

Internal Diameter (d) = 26mm
External Diameter (D) = 40mm
Width (B) = 5mm

Operating Temperature Range: -30°C to 120°C

Material Hardness: 70 Shore A

Maximum Allowable Pressure: 7.25 psi

Maximum Operating Speed: 10 m/s

Oil Seal Lip Type: R21 (Single Lip)

NBR (Nitrile Butadiene Rubber) oil seals, also known as NBR shaft seals or NBR rotary seals, are essential components utilized in machinery to prevent the leakage of fluids and contaminants along rotating shafts. Renowned for their excellent resistance to oils, fuels, and hydraulic fluids, NBR seals are widely employed in a diverse range of industrial applications.

Crafted from NBR, a synthetic rubber with exceptional durability and resilience, these seals offer reliable performance in challenging environments. Their flexible construction enables them to conform closely to the contours of rotating shafts, ensuring a tight and effective seal that prevents leakage and retains lubricants within the machinery.

NBR oil seals are commonly utilized in automotive, agricultural, manufacturing, and machinery industries, where they play a crucial role in enhancing the efficiency and longevity of equipment. Whether sealing bearings, gearboxes, or hydraulic systems, these seals provide dependable performance under varying operating conditions.

With their ability to withstand exposure to oils, greases, and other petroleum-based fluids without compromising sealing integrity, NBR oil seals are favored for applications where resistance to oil and fluid contamination is essential. Their cost-effectiveness, reliability, and broad compatibility make them a popular choice for sealing solutions across numerous industries.



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UPS / FedEx Express Delivery (upto 5kg) - £9.00

UPS / FedEx Express Delivery (5-10kg) - £10.00

UPS / FedEx Express Delivery (10-20kg) - £12.00


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Royal Mail 1st Class (upto 1kg) - £4.00

Royal Mail 1st Class (1-2kg) - £4.75


Royal Mail 2nd Class (upto 1kg) - £2.50

Royal Mail 2nd Class (1-2kg) - £3.50



*Please note, orders despatched on Royal Mail DOES NOT include any tracking information. Please allow 2-3 days for 1st Class, and 4-5 days for 2nd Class services.

*UPS and FedEx tracking numbers will be available after 5:30pm on the date of despatch and will be sent to the email address provided when placing your order.

*All orders exceeding £100 value will qualify for FREE express delivery!

* Orders must placed before 3:30pm for the above despatch methods.

Order by 3.30pm (Mon-Fri) for the following delivery

Service   Weight Delivery Times (Mon-Fri) Approx. Price  

Express Up To 5kg 1-2 Working Days £9.00 (Subject to VAT)
Over 5-10kg £10.00
Over 10-20kg £12.00
1st Class Up To 1kg 1-3 Working Days £4.00  
Order 1kg To 2kg £4.75  
2nd Class Up To 1kg 2-5 Working Days £2.50  
Over 1kg To 2kg £3.50  
Free express delivery on orders with a net value over £100.00 (UK Mainland only)

If you need to return an item, please call our customer service team on (+44) 1484 515360 or email us at [email protected].

You will need to provide the following:

  1. Name
  2. Order Number
  3. Product Part Number
  4. Date of Order

Returns are accepted within a 90-day period, and goods will only be accepted if the following criteria is met:

  1. Goods are still in the original, undamaged, and unopened packaging.
  2. The item has not been used, fitted, modified, or damaged.
  3. You have notified us no later than 90 days since receipt of goods.

Any products or quantities that have been sourced specifically to complete your order will be exempt from our standard returns policy and will be subject to handling charges. The rate of the handling charge is dependent on our suppliers’ current rates.

Products such as timing belts and ribbed belts that have been cut to your specification are also exempt from our standard returns policy.

Products that are ordered in error can also be returned, however the incurred costs for shipping will not be refunded.

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