|
At Donaldson, we view the seal system as an integral part of Disk Drive contamination control, an industry we have participated in since the 1970’s. The seal system is designed to minimize the diffusion of harmful gases and particles through seams or ports necessary for assembly of the Disk Drive. Proper sealing of the drive and channeling of contamination through the breather filter are essential components of an effective Disk Drive contamination control strategy.
Seals
|
Construction
Donaldson Disk Drive Seals utilize vapor barrier materials including aluminum foil or metalized polyester and low outgassing pressure sensitive adhesives with adhesive free zones if necessary. Every step is taken to ensure cost effectiveness, dimensional stability, product cleanliness and customer satisfaction.
|
|
|
Global Presence
Donaldson has assembled a worldwide team of experienced engineering, sales and manufacturing personnel specifically for the Disk Drive seal market. Donaldson’s converting locations are all Donaldson Company Inc. facilities.
|
|
Cleanroom Converting Experience
Donaldson has been supplying precision cleanroom converted components to the Disk Drive industry for over 10 years. Over 1 billion Donaldson manufactured products have already been installed in Disk Drives worldwide.
|
|
Seal Converting Facilities and Equipment
All converting is done in a cleanroom environment with Class 100 cleaning, inspection and packaging. A global array of rotary press, slitting, sheeting and inspection equipment allows Donaldson to facilitate all forms of drive assembly and deliver seals- anywhere, anytime.
|
|
Cleanliness Monitoring and Control
Donaldson’s certified in-house analytical laboratories provide raw material and in-process monitoring capabilities for:
FTIR- Fourier Transform Infrared analysis
DHS- Dynamic Headspace offgas analysis
IC- Ion Chromatography
LPC- Liquid Particle Counting
|
|
Functional Test Capabilities
Donaldson’s test capabilities provide the tools for seal design optimization and validation. Experienced engineers conduct vapor diffusion testing, peel testing, in-drive relative humidity testing, particle clean-up testing, leak testing and residue analysis to ensure that all seal design objectives are achieved at the drive level. Whenever possible, alternative materials or constructions are proposed to improve performance, cleanliness and cost.
|
|
