Protect PK1 – MIL-PRF-121 TI – 60 LB Kraft & Polyethylene Paper

Protect PK1 – MIL-PRF-121 TI – 60 LB Kraft & Polyethylene Paper

Price range: $161.00 through $217.00

Protect PK1 is a MIL-PRF-121 Type I kraft/polyethylene barrier material that’s waterproof, greaseproof, flexible, and heat-sealable. Built from 60 lb natural kraft laminated to polyethylene, it meets MIL-PRF-121G T1 specs to protect metal parts and equipment from moisture and corrosion in storage or transit

Manufactured to MIL-PRF-121 TI specifications.   NSN 8135-00-233-3871. All rolls are shipped individually via UPS.  Please call 1-800-644-4032 for bulk pricing or freight shipping.

Available Options:

Description

Protect PK1 – MIL-PRF-121 TI C1

NSN 8135-00-233-3871

MIL-PRF-121G T1

Barrier Material:Waterproof, Greaseproof, Flexible, Heat-Sealable, Type 1

Structure: 60# Natural Kraft Paper/PE

Order rolls of material through this page.  This material is also available as sheets, tubing, and bags. This material is certified to MIL-PRF-121G T1 military performance specifications. This material is suited for general packaging of metal parts prone to rust during shipping or storage.

Physical Properties

PROPERTY

TYPICAL VALUES

UNITS

TEST METHOD

Tensile Strength MD XMD

10.0

30.0

Lbs. at break

ASTM D882

Tear Strength MD SMD

160.0

200.0

g

ASTM 689

Burst

50

psi

Mullen

Seal Strength@ 520 F; 60psi; ¾ sec

4.0

lbs/in

ASTM D882

Caliper

~7.0

Mils

Yield

4,965

sq in/lb

For details on the MIL-PRF-121G T1 military specification, click here.

Available Sizes & Ordering

Protect PK1 is available in two standard roll sizes: a 48″ × 200 yd roll priced at $217.00 and a 36″ × 200 yd roll priced at $161.00. Protective Packaging ships all rolls individually via UPS to ensure safe delivery. 

For larger orders, bulk pricing and freight shipping options are available by calling 1-888-564-3162. In addition to standard rolls, the material can be custom-converted into bags, sheets, or tubing to match your exact packaging requirements.

Suggested Applications

Protect PK1 is designed for general packaging of metal parts and equipment prone to rust. It’s ideal for preventing corrosion during storage or transport in automotive, aerospace, and industrial environments where moisture and grease resistance are critical.

FAQs

What does MIL-PRF-121 Type I mean?

MIL-PRF-121 Type I is a U.S. military performance specification for kraft/polyethylene barrier materials that are waterproof, greaseproof, and heat-sealable. They’re typically used to protect metal parts and equipment.

What items can I protect with Protect PK1?

Protect PK1 is ideal for machinery components, tools, fasteners, and other metal parts vulnerable to corrosion in storage or shipment.

Are custom sizes available?

Yes. Rolls can be converted into bags, sheets, or tubing to meet your packaging requirements.

How should I seal this material?

Seal at 520 °F, apply 60 psi of pressure, and maintain contact for ¾ second for optimal, watertight seals.

What’s the difference between Type I and other MIL-PRF-121 types?

Type I is a kraft/PE laminate designed for general use. Other types may use different substrates or barrier layers for specialized applications.

Additional information

Weight 58 lbs
Dimensions 36 × 10 × 10 in
Size

36" x 200 yds, 36" x 50 ft, 48" x 200 yds, 48" x 50 ft

Go to Top