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Bearee™ Sliding Seal

ベアリー™しゅう動シール / NTN Corporation (Official website) / Listed on page 20 of the document

A resin-based sliding seal with excellent sealing performance against gases and oils, along with wear resistance and low friction. Limiting PV and operating temperature vary by grade.

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Bearee™ Sliding Seal on page 20 of NTN Corporation "エンジニアリング・プラスチック製しゅう動部品 ベアリー™"
Source: NTN Corporation「エンジニアリング・プラスチック製しゅう動部品 ベアリー™」page 20
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Specifications

Continuous operating temperature 230～260 ℃
Limit PV value 1.5 MPa・m/s

How to choose Seals

Points to check when selecting, with the values for this product (Bearee™ Sliding Seal).

  1. 1. Select the inner diameter to suit the mating part and groove

    An O-ring must be selected with an inner diameter matched to the shaft diameter and groove dimensions it fits. Selecting by a nominal size compliant with standards such as JIS B 2401 makes it easier to align with groove design. Listed products cover inner diameters from 15 to 1055 mm, and there are application-specific series such as those for vacuum flanges.

  2. 2. Check cross-section diameter and squeeze

    The cross-section diameter (wire diameter) and groove depth determine whether an appropriate squeeze (compression amount) can be achieved. An incorrect fit causes leakage, extrusion or early deterioration. O-rings for vacuum flanges come in series such as 4 mm, 6 mm and 10 mm, so select by checking against the groove dimensions.

  3. 3. Select a material suited to the fluid and environment

    Material is selected based on resistance to the sealed fluid. Rubber materials differ greatly in oil resistance, weather resistance and chemical resistance depending on type, while resins such as PTFE offer excellent chemical resistance and low friction. For vacuum applications, low outgassing should also be considered. Verify against a fluid-to-material compatibility chart.

  4. 4. Confirm operation is within the service temperature range

    Seal materials harden and degrade at high temperatures and lose elasticity at low temperatures, reducing sealing performance. Confirm that the maximum and minimum operating temperatures fall within the service temperature range, and if the seal is continuously exposed to high temperatures, also check the continuous service temperature. Temperature ranges may differ by grade even within the same product.

  5. 5. Allow margin below the maximum pressure

    If the operating pressure exceeds the maximum pressure, the seal may extrude into the gap and fail. Check that pressure, including surge pressure (momentary pressure rise), stays within the maximum pressure. Listed products include an example with a maximum pressure of 1000 bar; at high pressures, consider gap control in the groove and the use of backup rings.

  6. 6. Judge sliding applications by the limit PV value

    This product: Limit PV value 1.5 MPa・m/s

    For dynamic seals used in reciprocating or rotating motion, wear increases sharply when the PV value, the product of pressure and speed, exceeds the limit PV value. Listed products include examples with a limit PV value of 1.5 MPa·m/s and a maximum sliding speed of 0.5 m/s. Calculate from the operating pressure and speed, and confirm that both upper limits are met.

This guide was written by AI based on the listed products' documents and specification items.

About Seals and all products

Description

Available in shapes such as seal rings, wear rings, and cup seals, with grades selected according to application. Includes FL3000 series, AS5303, PK5301, and others; limiting PV and continuous operating temperature are shown in the data sheet tables.

Features

  • Excellent sealing performance
  • Excellent chemical resistance
  • Low friction and wear resistance

Applications

  • Seal rings
  • Wear rings
  • Cup seals

FAQ

Q. What applications can Bearee™ Sliding Seal be used for?
A. It is available in shapes such as seal rings, wear rings, and cup seals, and grades are selected according to the application.
Q. What are the features of Bearee™ Sliding Seal?
A. It is a resin-based sliding seal with excellent sealing performance, chemical resistance, and low friction and wear resistance. It offers excellent sealing performance against gases and oils.
Q. What are the continuous operating temperature and limiting PV value of Bearee™ Sliding Seal?
A. The continuous operating temperature is 230 to 260 ℃, and the limiting PV value is 1.5 MPa·m/s. Limiting PV and operating temperature vary by grade.
Q. What grades of Bearee™ Sliding Seal are available?
A. Grades include the FL3000 series, AS5303, PK5301, and others. Limiting PV and continuous operating temperature are shown in the data sheet tables.

Written by AI based on the content of the source documents.

Source documents

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