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PowerTap 24mm Radial Buna-N Torque Tube Quad-Ring Black
$2.99
$1.47
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This is a "clearance" item and cannot be exchanged or returned for incorrect choice or size.
This PowerTap Radial Quad-Ring is a genuine brand replacement part for fitting to the G3 Hub Torque Tube. It is made from durable Nitrile Rubber also known as Acrylonitrile-Butadiene (NBR) or, alternatively, Buna-N. It has an internal diameter of 24mm and features a good balance of desirable properties with excellent oil and fuel resistance as well as offering impressive heat resistance and cold flexibility.
Quad rings have many advantages over the standard toroidal O-Ring. Due to their squarish profile, quad rings resist twisting in the groove which generally results in spiral failure. With four sealing lips, a higher sealing efficiency can be attained with less required clamping force and less friction. Lubricant can form and be held in the channel between two sealing lips which can improve start up, breakout friction and reduce wear. Additionally, unlike an O-Ring, the Quad-Rings' mould lines are hidden within the channel between sealing lips, therefore mould lines do not make contact with any sealing surface.
Whenever removal of the PowerCap and Quad/O-Rings is required, they should be wiped with a clean, dry towel, ensuring no dirt or other contaminants remain. A light coating of O-Ring lube should then be applied to the ring making sure none gets into the electrical connections as this may cause damage to the hub or PowerCap. Install Quad-Ring onto torque tube, ensuring it is not twisted and properly seated in groove.
More About Quad-Rings:
The X-Ring, or Quad-Ring, is an elastomeric sealing part with four contact lips that enables extrusion and pressure to be better withstood. The flexibility of its lips also enables to reduce friction and wear. This seal also stands out due to the flexibility of the lips, which reduces friction and wear. Whatever the direction of the force (radial or axial), the symmetrical section X-Ring guarantees an excellent seal, even in conditions of low pressure. In the event the pressure of the fluid increases, the elastic activation and rebound increase too. This is due to the fact that the elastomer, on acting like a fluid, transmits the force of the pressure in all directions. Another of the benefits of X-Rings is that they require less force during start-up, up to 75% compared with other seals. Furthermore, due to their four support points, loss of lubricant is reduced significantly by effectively controlling the thickness of the film.
. PowerTap 24mm Buna-N Radial Quad-Ring for use on G3 Power Meter Hub
. Genuine brand replacement part
. Dynamic sealing possible with reduced friction
. Excellent oil and fuel resistance
. Heat Resistance & Cold Flexibility
. Durable & Lightweight
. Material: Buna-N a.k.a. Nitrile Rubber or Acrylonitrile-Butadiene (NBR)
. Internal Diameter: 24mm | 0.83 inches
. External Diameter: 26mm | 1.06 inches
. Thickness: 2mm | 0.079 inches
. Weight: <1 gram
. Sold in: Pack of one (1)
. Best Use: Road Bikes
. Made in the USA (Madison, Wisconsin)
. Warranty: 1 year warranty to the original owner to be free from defects in materials and workmanship
Advantages of Quad-Rings: . Standard grooves are deeper in comparison with O-Ring bands . Diametrical squeeze is lower than that of O-Rings . Dynamic sealing possible with reduced friction . Four lips to offer greater sealing capacity . A groove for lubrication which is very favourable for dynamic sealing . High stability for dynamic applications . O-Rings roll in the groove and create torsion while Quad-Rings slide with no negative results . More resistant to spiral failure
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