MIL PRF 131 K Class 1 Aluminium Foil | VAL59HS™ High Strength Military Packaging + Valcross® | 1.00, 1.25 & 1.50 x 200 Mtr Rolls | Valdamark Direct

£ 796.65£ 3,196.35 Exc. VAT

This Military Packaging is an aluminium foil & PE construction with the addition of a high strength Valcross® membrane layer.

With the addition of Valcross® these flexible barrier materials feature an enhanced tear and puncture resistance as well as excellent moisture barrier properties.

VAL59HS™ is an ideal choice for large or awkwardly sized objects, particularly those with sharp edges.

Conforms with DEF STAN 81-147 (formerly DEF STAN 81-75) & MIL-PRF-131 K Class 1.

We hold pre cut 1.0mtr, 1.25mtr & 1.50 mtr rolls in stock. Standard lengths are 200 linear mtr but a custom slit and rewind service is available.

Contact us for custom pricing on 3D and 2D vapor barrier bags.


The tough construction of this MIL PRF 131 K Class 1 aluminium foil make it the ideal choice for demanding export and asset preservation/storage projects.

The combination of complementary materials in this mil spec packaging result in an effective moisture barrier that protects goods during transport and storage.

The tear and breaking strength is the highest in our range. Still it retains the very low moisture vapour transmission rate of 0.3g/m2 per 24 hours. This is one of a list of impressive characteristics seen on the data sheet of this material.

The high performance nature of this extends to the inclusion of Valcross® in the laminate. This gives optimal strength whilst retaining excellent flexibility.

This barrier foil is available in several different widths supplied in a 200mtr log packaging roll. The user can cut to the desired dimensions allowing the component to be heat sealed and vacuum packed for for it’s journey.

Using MIL-PRF-131 K Spec Bags

This type of Aluminium foil can be converted into liners flat bags & pouch packaging to suit components and precision parts.

It  is ideal for use in heavy machinery transport/storage projects. It also meets the standard EU and BIR guidelines as well as MIL PRF 131 K class 1.

NF H 00 310 CLASS IV approved.

DEF STAN 81-75/2 – TYPE 1 CLASS A approved.

MIL PRF 131 K Class 1 Handling

Requires Heat sealingwith a compound aluminium foil sealer. Set to 210°c at 5 bars for 2-3 seconds.

The suitable operating temperatures for this material are between -40°C to +70°C.

For optimal conditions we recommend you use this barrier foil in conjunction with desiccant. This will absorb excess moisture in transit.

For more information on how to calculate desiccant requirements please visit our desiccant estimate page.

Warning – Please note this material is intended to be used only by suitably trained professionals.

The Mil PRF 131 K performance specifications is specified by the US government to apply to barrier materials that are –

 Water vapor proof

 Grease proof


 Heat Seal able

These military specification barrier materials must feature the above characteristics to be suitable for use as military packaging.

Technical Data

Constructed of micron 12чm PET, 9чm Alu, 70gsm Blue Crossed Polyethylene Valcross®

Material code VAL59HS.

Open technical data sheet in .pdf format

Delivery Time

Dependent on quantities and format ordered. Log & jumbo foil rolls available from stock.


Click here for constant heat sealers

Additional information

Weight 21 kg
Roll size

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