Dust Seal

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VALQUA No.
4060-DSB （FKM）
Product name
Custom-Made Dust Seal Molded Product
Shape
DSB
DSB
Features1
With an oil lip
Features2
Oil hydraulic standard
Features3
With a metal ring (press-fit type)
Inventory status
Products that are made based on the orders received

Standard size
　
Type
Lip

Application classification
For rods (Construction machinery)
Pressure classification
Oil hydraulic
Standard material

none

Non-standard quality of material (adaptable material)
Usage location Material name Material No.
DSB FKM D0390
Ring SS400

Sealing direction
Flat surface Cylinder Cylindrical piston Cylindrical rod
- - × ○
Size
Subject to catalog or design criteria

■ Product content and main applications

Product content
Fluororubber material is molded into a sealing lip shape with both a duster lip and oil lip, and metal parts are attached.
Main applications
It is used as a seal for various types of hydraulic machinery from -20 to 80℃. Especially appropriate for hydraulic cylinder packing that needs high-pressure and abrasion-resistant properties.

■ Service temperature range

Rubber material Service temperature range
FKM -10℃ ～ 150℃
Click here for the list of rubber materials

■ Operating pressure, pressure direction and pressure types

Pressure Pressure (with back-up ring) Pressure direction
Zero pressure※1 - One side※2
-

Pressure types
shock, surge, pulse, vacuum		 -

※1 No fluid sealing mechanism

※2 As the duster lip orientation

■ Motions and strokes applied

For fixing -
Reciprocating ○
Rotating ×
Helical ×
Opening and shutting ×
Sliding ×
Oscillating ×
Stroking
Stroking is not specified; however, a short stroke is acceptable.

■ Fluid, speed and PV value

Liquid ○
Gas ×
Fine particle ○
General dust ○
Oil film ○
Speed
0.04～1m/sec
PV Value
-

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

Lubrication
Not needed ※3
Mountability
Fair
Sliding resistance
and compression resistance
Low
Eccentricity/inclination
and conformance
High

※3 However, it is preferable to have lubrication.

■ Cross-section dimensions and design precautions

・Cross-section dimensions


・Design precautions

If the amount of oil film scraped out is significant, the duster lip shall have a round tip.
When there are more leaks from the rod seal, extrusion/damage will easily occur.

■ Case examples of defects and countermeasures

■ FAQ

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

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