Aviation Helmet Upgrade Components
The Ultimate in Flying Comfort™
The Aviation Helmet Upgrade fits all helmet types, including HGU, SPH®*, Alpha, and CGF and can include: the ZetaLiner® Helmet Liner (or PM AirWarrior Approved Zeta II® Helmet Liner for the HGU-56), SoftSeal® Ear Cushions, SoftSkin® Ear Seal Covers, HushKit® Passive Ear Cup Noise Attenuation Kit and MicMuff® Microphone Cover. A SoftSeal/HushKit® Combo also is available. You'll get the greatest improvement when you use all Upgrade components together.
A ZetaLiner® Helmet Liner (see above)
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Testing shows transmitted impact loads were reduced 25-35% in a helmet equipped with ZetaLiner® or Zeta II® Helmet Liner and SoftSeal/HushKit® Combo ear seals and insulation kit, compared to the original helmet. Visco-elastic foam sewn into cool, washable wear-resistant fabric. Eliminates top-of-head hot spots. Self-wicking fabric controls heat buildup by evaporative cooling of perspiration. Eliminates "bob and roll" when mounting external equipment. Lighter weight than other liners. Fitting only takes a few minutes. Testing shows these helmet Liner reduces skin temperature 1.5°F compared to existing liner systems.
Specifically for the HGU-56, the PM Air Warrior Approved Zeta II® Helmet Liner offers the same benefits as the original ZetaLiner® Helmet Liner. Fitting only takes a few minutes!
See ZetaLiner® & Zeta II® Helmet Liner fitting,
selection information and purchase
a ZetaLiner® or Zeta II® Helmet Liner.
B SoftSeal® Ear Cushions (see above)
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Conform to your head and eyewear. 200-300% more volume for total comfort. Temperature and pressure sensitive, two-part visco-elastic foam core. Smooth, soft, washable synthetic leather coverings. Flange and/or adhesive mounting for plastic Ear Cup, depending on applications. Original ear seals are replaced with the SoftSeal® Ear Cushions.
View and purchase SoftSeal® Ear Cushions.
SoftSeal® Ear Cushions, one pictured with SoftSkin® Ear Seal Cover and one without. The SoftSkin® Ear Seal Cover keeps your ears dry and cool and are machine washable.
C SoftSkin® Ear Seal Covers (see above)
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Keep your ears even drier and cooler and add to product life by slipping SoftSkin® Ear Seal Covers over SoftSeal® Ear Cushions. Self-wicking reduces perspiration buildup. Especially helpful in hot, humid climates. They fit loose, not tight like a drum (this is important because tight cloth covers produce pressure on the ear, causing pain). Choose for 3/4" or 1-1/8" thick SoftSeal® Ear Cushions.
View and purchase SoftSkin® Ear Seal Covers.
D HushKit® Passive Ear Cup Noise Attenuation Kit (see above)
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Testing shows HushKit® Passive Ear Cup Noise Attenuation Kit performs better in the 700-7000Hz mid-range where hearing loss occurs. Dramatically improves noise attenuation and intelligibility. Four die-cut visco-elastic foam layers fill all Ear Cup voids. Turn down your radio volume! It’s not that you can’t hear your radio (even though it’s on high volume) — it’s that you can’t understand what’s being said in the voice mid-range.
View and purchase a HushKit® Kit.
SoftSeal/HushKit® Combo
Call Oregon Aero for GSA Information
Testing shows transmitted impact loads were reduced 25-35% in a helmet equipped with SoftSeal/HushKit® Combo ear seals and insulation kit and ZetaLiner® Helmet Liner, compared to the original helmet. An ear seal and insulation kit in one — one giant shock absorber. Replaces triangular leather earpad or upgrades plastic Ear Cup. Eliminates pain. Testing shows significantly enhanced noise attenuation. Hook/loop attachment. Reduces weight. 3/4" thick Combo pair weighs 2.5 oz., 1-1/8" thick Combo pair weighs 3.2 oz.
View and purchase a SoftSeal/HushKit® Combo.
E MicMuff® Microphone Cover (see above)
Call Oregon Aero for GSA Information
The MicMuff® Microphone Cover lets a noise canceling mic do its job above 97dB. Eliminates ambient cockpit noise and noise from radios and intercom. The noisier the cockpit (warbirds, open cockpit, large engine aircraft), the more dramatic the improvement in noise reduction and clarity. See explanation of how it works. MicMuff® Microphone Cover must be used on all helmets installed in the communications system. Soft, washable leatherette cover over foam sleeve creates chamber around mic. Cockpit noise has limited access to mic cartridges, but voice enters easily through holes in leatherette cover. Elasticized tie ensures it won’t blow away. Easy Installation.
View and purchase a MicMuff® Microphone Cover.
The World's Greatest Helmet Is the One You Already Own!®
— With an Oregon Aero® Upgrade.
