x-ring x-ring cross section X-ring features
x-ring
AS568-458 Buna-N 70 Duro Black X-Ring for 14-1/2 ID X 1/4 CS

Buna-N X-Rings 70 Duro Black BN700100-X-458

$ 27.87 per Each
Minimum Order Quantity (MOQ): 2
Ships within 14 days
Qty Price
2 - 2 $20.9025
3 - 5 $18.1155
6 - 10 $15.3285
11 - 21 $12.5415
22+ $12.5400

Ordering in large quantities? Ask for a lead time quote — we'll get back to you with pricing and lead time.

Product Details
Material Buna-N
Cross Sectional Shape X
Hardness 70
Dash 458
Fractional
  • ID: 14-1/2
  • CS: 1/4
  • OD: 15
Actual (Inch)
  • ID: 14.475 ± 0.070
  • CS: 0.275 ± 0.006
  • OD: 15.025
Actual (Metric)
  • ID: 367.67 ± 1.78
  • CS: 6.99 ± 0.15
  • OD: 381.650

Buna-N (Nitrile) X-rings, also known as Quad-rings, are a type of sealing element designed to provide superior sealing performance in dynamic applications. These rings have a unique square cross-section with four contact points, offering better sealing efficiency and lower friction compared to traditional O-rings. Made from a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene, Buna-N X-rings offer excellent resistance to oils, fuels, and a variety of chemicals, making them ideal for a wide range of industrial, automotive, and aerospace applications.

Buna-N X-Ring Recommended Uses

Seals and gaskets in hydraulic systems, automotive fuel systems, industrial machinery, high-pressure applications, dynamic sealing applications, and rotary sealing applications.

Buna-N X-Ring Not Recommended

Brake fluid, ozone, UV exposure, phosphate esters, chlorinated hydrocarbons, aromatic hydrocarbons, ketones, strong acids, atmospheric aging.

Buna-N X-Ring Limitations

  • Not suitable for ozone, sunlight, or weathering exposure.
  • Limited performance in high-temperature environments.
  • Not ideal for strong acids and alkalis.
  • Not recommended for applications requiring low compression set.
Buna-N X-Ring Usable Temperature Range

-30 to 250°F (-34 to 121°C)

Buna-N X-Ring Also Known As

Buna-N X-Ring, Quad-Ring, Nitrile X-Ring, NBR X-Ring, Nitrile Butadiene Rubber X-Ring.