# SKF / CR Seals 7440 Small Bore Oil Seal - 0.750" Shaft x 1.002" Bore x 0.250" Width NBR - MROSupply.com

***SKF / CR Seals (formerly CR Seals) 7440 is a small bore radial shaft oil seal for 0.750" shaft diameter, 1.002" housing bore, and 0.250" seal width. Features a NBR sealing lip with spring loading for reliable radial contact. Operating temperature: -40°F to 250°F. Used in motors, gearboxes, pumps, and industrial rotating equipment. Prevents lubricant leakage and contaminant ingress.***



## Product details:

- Catalog number: 7440
- SKU: 311108
- Price: ***$5.87*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 3 days
- Brand: [SKF Seals](https://www.mrosupply.com/brands/skf-seals/)
- Category: 
    - [NBR / Buna-N / Nitrile Double Lip](htts://www.mrosupply.com/seals/oil-seals/double-lip-oil-seals/nbr-buna-n-nitrile-double-lip/)
    - [Double Lip Oil Seals](htts://www.mrosupply.com/seals/oil-seals/double-lip-oil-seals/)
    - [Oil Seals](htts://www.mrosupply.com/seals/oil-seals/)
    - [Seals](htts://www.mrosupply.com/seals/)
- Unit of measure: each
- Weight: 0.034 lb
- Technicall support: contact supplier for technical support on 267-436-6000


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Auxiliary lip: No
  

  
- Design: CRW1
  

  
- Housing bore diameter: 31.75 mm, 1.25 in
  

  
- Maximum operating temperature: 100.0 °C, 212.0 °F
  

  
- Maximum operating temperature (°F): 100.0 °C, 212.0
  

  
- Minimum operating temperature: -40.0 °C, -40.0 °F
  

  
- Minimum operating temperature (°F): -40.0 °C, -40.0
  

  
- Permissible circumferential speed: 3.93 m/s
  

  
- Rotational speed: 3960.0 r/min
  

  
- Seal width: 6.35 mm, 0.25 in
  

  
- Sealing lip material: Nitrile rubber (NBR)
  

  
- Shaft diameter: 19.05 mm, 0.75 in
  

  
- Type of outside diameter: Metal-cased with sealant coating on the outside diameter
  

  
- Unit system: Inch
  
## Product documents / software:

- [DXF](https://documents.mrosupply.com/product_documents/74/7440/skf_seals_7440_eICfon8.dxf)

## Product's reviews:
- Small diameter seals - I use a lot of small diameter inch dimension seals for the repair of older chainsaws. MRO is a great resource for many seals with very competitive prices and free shipping for larger orders. I will continue to use MRO whenever I can.
- Seals - Fast delivery, very good price
- Mro supply - seals - I use a lot of the SKF6119 seals for chainsaw repairs and MRO always has the best prices and fast shipping.
- Works good great delivery time - The seals works as they should. Delivery time was good