U-Packing

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VALQUA No.
2060-UP(NBR)
Product name
Custom-Made Synthetic Rubber Molded Product
Shape
U-PK symmetrical round lip
U-PK symmetrical round lip
Features1
For pneumatic use, for low pressure use
Features2
Common application for rod seals and piston seals
Features3
Low resistance
Inventory status
Products that are made based on the orders received

Standard size
　
Type
Lip

Application classification
Common use
Pressure classification
Pneumatic
Standard material

none

Non-standard quality of material (adaptable material)
Usage location Material name Material No.
Main part NBR B0780

Sealing direction
Flat surface Cylinder Cylindrical piston Cylindrical rod
- - ○ ○
Size
There is a design criteria for cross-sections.
Actual: φ

■ Product content and main applications

Product content
Synthetic rubber materials are molded into a ring shape with a U, J and L-shaped cross section. Rubber compounding that is appropriate for the service temperature and the fluid type is available.
Main applications
It is used as a seal for various types of hydraulic machinery such as cylinders, presses, jacks and electromagnetic valves.

■ Service temperature range

Rubber material Service temperature range
NBR -20℃ ～ 80℃
Click here for the list of rubber materials

■ Operating pressure, pressure direction and pressure types

Pressure Pressure (with back-up ring) Pressure direction
～1MPa Basically not used One-side pressure
-

Pressure types
shock, surge, pulse, vacuum		 They can all be accommodated

■ Motions and strokes applied

For fixing -
Reciprocating ○
Rotating ×～△
Helical △
Opening and shutting ×
Sliding ×
Oscillating -
Stroking
Stroking is not specified; however, a short stroke could cause a lack of lubrication.

■ Fluid, speed and PV value

Liquid △
Gas ○
Fine particle ×
General dust -
Oil film -
Speed
0.7m/sec or less
PV Value
-

■ Lubrication, mountability, sliding resistance, compression resistance, eccentricity/inclination, conformance

Lubrication
Needed
Mountability
Good
Sliding resistance
and compression resistance
Low
Eccentricity/inclination
and conformance
High


■ Cross-section dimensions and design precautions

・Cross-section dimensions

1.9Ｗ


・Design precautions

A symmetric type is rarely used.
Should be directed toward an asymmetric type (UPP/UPR)

■ Case examples of defects and countermeasures

■ FAQ

‣FAQ about high performance elastomer is here
 ‣FAQ about the elastomer is here

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