Dust Seal

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VALQUA No.
P9625-DRL (Polyurethane)
Product name
Dust Seal
Shape
DRL
DRL
Features1
Wiper seal with only a duster lip
Features2
Based on DSL with a metal ring (press-fit type) (To prevent back leakage of dust)
Inventory status
Manufacturable product

Standard size
　
Type
Lip

Application classification
For rods
Pressure classification
Oil hydraulic
Standard material
Usage location Material name Material No.
DRL Polyurethane R0490

Non-standard quality of material (adaptable material)

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

■ Product content and main applications

Product content
Polyurethane rubber material is molded into a single type duster lip.
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
Polyurethane -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
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
Excellent
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

3.5Ｗ


・Design precautions

Since there is no lip-type oil seal, the oil film is scraped out.

■ Case examples of defects and countermeasures

■ FAQ

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

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