ZetaLiner® Helmet Liners

The original ZetaLiner® Helmet Liner Helmet Liner solves the problems of liner hot spots, perspiration and helmet instability — safety-related problems which can reduce focus and execution of the mission.

Easy Fitting
No more hour-long fitting sessions that require liner heating! The ZetaLiner® Helmet Liner Upgrades can be done in minutes as shown below. See the following information about how to select the correct ZetaLiner® Helmet Liner length and thickness.

Apply self-adhesive hook
(as needed).
Place Liner inside helmet.
The ZetaLiner® Helmet
Liner is retained by hook/loop.
     
   
How to Select the Correct Helmet Liner Length and Thickness

Choosing a Helmet Liner Length

Measure the inside of your helmet from front to back, down into the bowl, as shown in the photo. Then consult the chart below and find the correct part number.
   
  Choosing a Helmet Liner Thickness

Both liners comes in four thicknesses:
1/4", 3/8", 1/2" and 5/8".

The most commonly used thickness is 3/8". To select the proper liner thickness, review the information below, then find your part number
.

NOTE:
If your TPL®* has been heated and fitted, you will probably need a Helmet Liner one thickness thinner than those listed below.
   
For a ZetaLiner® Helmet Liner
IF YOUR TPL® LINER HAS: THEN TRY:
2 Layers 1/4" ZetaLiner® Liner
3 Layers 3/8" ZetaLiner® Liner
4-5 Layers 1/2" ZetaLiner® Liner
5+ Layers 5/8" ZetaLiner® Liner

NOTE: The sizing informaton above is intended to suggest a starting point for the fitting process. Each pilot should be fitted individually for comfort and stability. Final results may differ from the above data. Fitting only takes minutes!
   
HELMET
TYPE
HELMET
SIZE
ZETALINER® Helmet Liner Length
Rotorcraft Helmets 
SPH-4®* Regular
Large
X-Large
15"
16"
16"
SPH-4B®* Regular
X-Large
15"
16"
SPH-5®* Regular
X-Large
15"
16"
HGU-84 Medium
Large
X-Large
X-Large Wide
12"-13"
13"-14"
14"-15"
14"-15"
 
HELMET
TYPE
HELMET
SIZE
ZETALINER® Helmet Liner Length
Fixed Wing Helmets 
HGU-33 Medium
Large
X-Large
12"-13"
13"-14"
14"-15"
HGU-55 Medium
Large
X-Large
12"-13"
13"-14"
14"-15"
HGU-68 Medium
Large
X-Large
X-Large Wide
12"-13"
13"-14"
14"-15"
14"-15"
HGU-85 Medium
Large
X-Large
X-Large Wide
12"-13"
13"-14"
14"-15"
14"-15"
CGF Medium
Large
X-Large
12"
13"
14"
Alpha Please call for information.


PART
NUMBER
DESCRIPTION
PRICE
EACH
See Below
Descriptions Below

$99.00

The following are for Styroliner internal measurement 12"
from front to back:
#95122A ZetaLiner® Helmet Liner
1/4" thick:
   NSN 8475-01-472-3318

#95123A
ZetaLiner® Helmet Liner
3/8" thick:
   NSN 8475-01-472-3774

#95124A
ZetaLiner® Helmet Liner
1/2" thick:
   NSN 8475-01-472-3319

#95125A ZetaLiner® Helmet Liner
5/8" thick:
   NSN 8475-01-472-3321

The following are for Styroliner internal measurement 14"
from front to back:

#95142A ZetaLiner® Helmet Liner
1/4" thick:
   NSN 8475-01-472-3322

#95143A ZetaLiner® Helmet Liner
3/8" thick:
   NSN 8475-01-472-3324

#95144A ZetaLiner® Helmet Liner
1/2" thick:
   NSN 8475-01-472-3779

#95145A ZetaLiner® Helmet Liner
5/8" thick:
   NSN 8475-01-472-3326


   

The following are for Styroliner internal measurement 15"
from front to back:


#95152A ZetaLiner® Helmet Liner
1/4" thick:
   NSN 8475-01-472-3325

#95153A ZetaLiner® Helmet Liner
3/8" thick:    NSN 8475-01-472-3780

#95154A ZetaLiner® Helmet Liner
1/2" thick:
   NSN 8475-01-472-3327

#95155A ZetaLiner® Helmet Liner
5/8" thick:
   NSN 8475-01-472-3770

   

The following are for Styroliner internal measurement 16"
from front to back:

#95162A ZetaLiner® Helmet Liner
1/4" thick:
   NSN 8475-01-472-3781

#95163A ZetaLiner® Helmet Liner
3/8" thick:
   NSN 8475-01-472-3773

#95164A ZetaLiner® Helmet Liner
1/2" thick:
   NSN 8475-01-472-3775

#95165A ZetaLiner® Helmet Liner
5/8" thick:
   NSN 8475-01-472-3783


   

The following are for Styroliner internal measurement 17"
from front to back:

#95172A ZetaLiner® Helmet Liner 1/4" thick

#95173A ZetaLiner® Helmet Liner 3/8" thick

#95174A ZetaLiner® Helmet Liner
1/2" thick
:
NSN 8415-01-573-3935

#95175A ZetaLiner® Helmet Liner
5/8" thick:
NSN 8415-01-581-2154

   

The following are for Styroliner internal measurement 18"
from front to back:

#9A-0018-101 Zeta II™ Helmet Liner 1/4" thick

#9A-0018-102 Zeta II™ Helmet Liner 3/8" thick

#9A-0018-103 Zeta II™ Helmet Liner 1/2" thick

#9A-0018-104 Zeta II™ Helmet Liner 5/8" thick


 
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