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O Rings

About O Rings

These versatile seals are crucial in numerous applications, functioning effectively by fitting into grooves and compressing between two or more parts to create a reliable seal. They are particularly useful in dynamic environments as well as in static conditions such as pipelines or tanks.

At Henderson Bearings, common materials for O Rings include Nitrile (Buna-N), Viton® (FPM, FKM), Neoprene® (CR), EPDM, and Silicone (VMQ), each offering unique properties that cater to varying operational demands and environmental factors.

O Rings come in diverse sizes and material makeups to meet specific industry needs, providing options in terms of chemical compatibility, resilience, and overall durability.

If you need assistance selecting the right O Ring for your application or have specific requirements, please contact our sales team at Tel:-01425-477787, or email sales@hendersonbearings.co.uk.

You can also browse other sealing solutions such as Rotary Shaft Seals, O Ring Selection Kits, Hydraulic Damper Fork Seals, Nilos Sealing Rings, Seal Packs for Split Plummer Blocks, and Sealing Washers, all available under our Sealing Products range.

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Items 1-12 of 235

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  1. BS019 Nitrile NBR70 O Ring 20.35mm Bore 1.78mm Section
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    BS019 Nitrile NBR70 O Ring 20.35mm Bore 1.78mm Section
    £2.70 £2.25 As low as: £1.08
  2. BS020 Nitrile NBR70 O Ring 21.95mm Bore 1.78mm Section
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    BS020 Nitrile NBR70 O Ring 21.95mm Bore 1.78mm Section
    £2.90 £2.42 As low as: £1.16
  3. BS021 Nitrile NBR70 O Ring 23.52mm Bore 1.78mm Section
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    BS021 Nitrile NBR70 O Ring 23.52mm Bore 1.78mm Section
    £3.17 £2.64 As low as: £1.27
  4. BS022 Nitrile NBR70 O Ring 25.12mm Bore 1.78mm Section
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    BS022 Nitrile NBR70 O Ring 25.12mm Bore 1.78mm Section
    £3.31 £2.76 As low as: £1.32
  5. BS023 Nitrile NBR70 O Ring 26.7mm Bore 1.78mm Section
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    BS023 Nitrile NBR70 O Ring 26.7mm Bore 1.78mm Section
    £2.66 £2.22 As low as: £1.07
  6. BS024 Nitrile NBR70 O Ring 28.3mm Bore 1.78mm Section
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    BS024 Nitrile NBR70 O Ring 28.3mm Bore 1.78mm Section
    £2.77 £2.31 As low as: £1.10
  7. BS025 Nitrile NBR70 O Ring 29.87mm Bore 1.78mm Section
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    BS025 Nitrile NBR70 O Ring 29.87mm Bore 1.78mm Section
    £2.52 £2.10 As low as: £1.01
  8. BS026 Nitrile NBR70 O Ring 31.47mm Bore 1.78mm Section
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    BS026 Nitrile NBR70 O Ring 31.47mm Bore 1.78mm Section
    £2.70 £2.25 As low as: £1.08
  9. BS027 Nitrile NBR70 O Ring 33.05mm Bore 1.78mm Section
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    BS027 Nitrile NBR70 O Ring 33.05mm Bore 1.78mm Section
    £3.00 £2.50 As low as: £1.20
  10. BS028 Nitrile NBR70 O Ring 34.65mm Bore 1.78mm Section
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    BS028 Nitrile NBR70 O Ring 34.65mm Bore 1.78mm Section
  11. BS029 Nitrile NBR70 O Ring 37.82mm Bore 1.78mm Section
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    BS029 Nitrile NBR70 O Ring 37.82mm Bore 1.78mm Section
    £3.31 £2.76 As low as: £1.32
  12. BS030 Nitrile NBR70 O Ring 41mm Bore 1.78mm Section
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    BS030 Nitrile NBR70 O Ring 41mm Bore 1.78mm Section
    £3.41 £2.84 As low as: £1.37
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What are O Rings and why are they important in various industries?

O Rings are circular sealing elements designed to prevent leaks and maintain system integrity across multiple industries. They fit snugly into machined grooves to form tight seals, crucial in both dynamic movements and static conditions. For more specialised sealing applications, such as in split housings or around rotating shafts, alternatives like Rotary Shaft Seals or Seal Packs for Split Plummer Blocks may be more suitable.

How do I select the right O Ring for my application?

Choosing the right O Ring requires considering the specific conditions it will be exposed to, including pressure, temperature, and chemical environment. The material of the O Ring—such as Nitrile, Viton®, Neoprene®, EPDM, or Silicone—should be selected based on these factors for optimal performance and durability. If you're building a kit for multiple applications or repairs, our O Ring Selection Kits offer a convenient solution with assorted sizes and materials.

What are the common uses of O Rings?

O Rings are versatile and used in many industries, including automotive, aerospace, and manufacturing. They are particularly valuable in systems where precise sealing is necessary, such as in fluid transfer equipment, hydraulic and pneumatic systems, and various types of pumps and valves. For sealing applications involving fork components or shock absorbers, Hydraulic Damper Fork Seals may be more appropriate.

Can O Rings fail, and how can I tell if they need replacing?

O Rings can fail due to wear and tear, improper sizing or material choice, or degradation from chemicals or temperatures. Signs of failure include leakage, visible cracking or brittleness, and loss of flexibility or shape. Regular inspection and maintenance can help identify when replacements are needed. In environments prone to contamination or high-speed rotation, you may also want to consider using Nilos Sealing Rings or Sealing Washers as part of your overall sealing solution.

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Inside Diameter
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  2. 1.07mm 1 item
  3. 1.24mm 1 item
  4. 1.42mm 1 item
  5. 1.78mm 2 items
  6. 2.06mm 1 item
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  20. 5.94mm 1 item
  21. 6.02mm 1 item
  22. 6.07mm 1 item
  23. 6.35mm = 1/4" 1 item
  24. 6.75mm 1 item
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Outside Diameter
  1. 2.77mm 1 item
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  147. 76.5mm 2 items
  148. 77.94mm 1 item
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  155. 85.84mm 2 items
  156. 86.23mm 1 item
  157. 87.46mm 1 item
  158. 88.9mm = 3-1/2" 1 item
  159. 89.04mm 1 item
  160. 92.2mm 1 item
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  170. 111.43mm 1 item
  171. 112.87mm 1 item
  172. 114.3mm = 4-1/2" 1 item
  173. 117.56mm 1 item
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  177. 127mm = 5" 1 item
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  229. 246.22mm 1 item
  230. 251.33mm 1 item
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Unit Of Measure
  1. IMPERIAL 13 items
O Ring Cross Section
  1. 1.020mm 3 items
  2. 1.270mm 1 item
  3. 1.530mm 1 item
  4. 1.78mm 77 items
  5. 2.62mm 92 items
  6. 3mm 1 item
  7. 3.53mm 50 items
  8. 5.33mm 9 items
  9. 6.99mm 1 item
Shore Hardness
  1. 70 233 items
Colour
  1. Black 216 items
Material
  1. Nitrile (Buna/NBR) 234 items
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Henderson Bearings
Crow Arch Lane
Ringwood
Hampshire
BH24 1NZ
UK

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01425477787

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