Sealing System Leakage Analysis - Spring
Missing Spring
| Probable Causes | Actions or Countermeasures |
|---|---|
| Seal may never have had a spring. | Check for spring witness marks in spring groove. Also light wear on the primary lip. |
| Spring may have become dislodged during seal or shaft installation. | Check installation procedures. |
| Spring joint may have separated. | Check installation procedures. Check garter spring joint quality. |
Corroded Spring
| Probable Causes | Actions or Countermeasures |
|---|---|
| Spring may not have had proper rust preventative applied by supplier. | Check new seals from the same supplier. |
| Application may be exposed to excessive moisture. | Check for moisture in lube or corroded components. |
| Application may contain a corrosive fluid. | Specify stainless steel spring. |
| Seal may have been improperly packaged and/or stored prior to installation. | Check service stock. |
| Wrong spring material. | Consult supplier. |
Check for Correct Dimensions and Spring Load.
| Probable Causes | Actions or Countermeasures |
|---|---|
| Wrong spring on seal. (excessive wear or no wear on primary lip). | Check seal drawing for spring dimensions. |
| Spring not properly normalized. | Check seal drawing. Check for proper heat treatment. |
| Improperly manufactured spring. | Check seal drawing for spring dimensions. |
More than Spring
| Probable Causes | Actions or Countermeasures |
|---|---|
| Malfunctioning spring installation equipment at seal manufacturing location. | System audit at supplier. |
| Loose springs as seal installation station. Extra spring installed by the assembler. | Review installation station, remove and loose springs. Review seal design and packaging. |
Separated Spring
| Probable Causes | Actions or Countermeasures |
|---|---|
| Improper spring nib configuration. | Inspect spring. |
| Excessive vibration or stick-slip of seal. | Inspect primary lip for excessive, cyclical seal wear. |
| Improper seal installation. | Review installation procedures. |
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News
October 25th
Click here for a link to the contents section of the program...
International Sealing Conference Update
March 22nd
Aftermarket Partner - Seneca Rubber Zerelli has joined forces with
Aftermarket Partner
April 16th
Sales Coverage - VE Bracket Zerelli is pleased to announce that we have brought on the team from
Sales Coverage
November 1st
Zerelli Technologies Published in the November Issue of Pumps and Systems Magazine
February 23rd
Here is a great article on grease compatibility . . .
The Skinny on Grease Compatibility
July 30th
Here is a link to a great article about how to avoid particulate contamination . . . Obviously it goes without saying that a sealing...
How to Avoid Particulate Contamination