425 (1\"X60YDS) - 3M - Product.Live

Aluminum Foil Tape

425 •427

Product Description 3M™ Aluminum Foil Tapes 425 and 427 are 5 mil nominal dead soft aluminum foil

backing combined with a transparent acrylic adhesive. 3M aluminum foil tape 427

offers an easy-release liner.

Typical Physical

Properties

Features • Flame resistant. Meets U.L. 746C (File E 122798) and 723, Class “L” low

flammability rating (File R 7311).

•3M aluminum foil tape 425 can be certified to meet SAE-AMS-T-23397 and L-T-80B.

• Meets requirements of F.A.R. 25.853(a).

• The very low moisture vapor transmission rate makes these tapes a good sealant.

• The acrylic adhesive, combined with the durable aluminum backing, offers ideal

properties for long serviceable life in and outdoors.

• Good candidate as a maskant in electroplating of aluminum because it will not

contaminate the bath.

• Aluminum backing provides excellent reflection of both heat and light.

• Best results obtained when applied to a clean, dry surface above 32°F (0°C).

Technical Data April, 2008

Note: The following technical information and data should be considered representative

or typical only and should not be used for specification purposes.

ASTM Test Method

Adhesion to Steel: D-3330

3M aluminum foil tape 425 47 oz./in. width (51 N/100 mm)

3M aluminum foil tape 427 50 oz./in. width (55 N/100 mm)

Tensile Strength: 30 lbs./in. width (525 N/100 mm) D-3759

Backing Thickness: 2.8 mils (0.07 mm) D-3652

Total Tape Thickness: 4.6 mils (0.12 mm) D-3652

Liner Thickness: D-3652

3M aluminum foil tape 427 3.1 mils (0.08 mm)

Elongation at Break: 8% D-3759

Temperature Use Range: -65° to 300°F (-54° to 149°C)

Water Vapor 0.1g H2O/100 sq. in./24 hrs. D-3833

Transmission Rate: (1.55 g/m2/24 hrs.)

Approximate Weight: 0.013 lbs./yd./in. width (4.77 gms/m/24 mm)

Product Construction

Backing Adhesive Color Liner Standard Roll Length

Dead soft Acrylic Shiny silver Easy-release paper 60 yds. (55 m)

aluminum (3M aluminum foil tape 427)

IMPORTANT: These tapes are not intended for medical usage. Neither 3M nor the Food and Drug

Administration have evaluated or reviewed this tape for medical application. 3M does not recommend

or endorse the usage of the aluminum tape for medical application. User assumes all risk and liability

whatsoever in connection with usage of product in a medical application.

Application Ideas • Aircraft paint stripping maskant.

• Moisture barrier in “white goods” appliances.

• General purpose heat reflector and heat dissipator.

• Mechanically hold wires and cooling coils in “white goods” appliances.

• Repair tears on truck trailers and aircraft.

• Splicing of thin gauge foils.

• General purpose holding, patching, sealing applications – indoors and out.

3M™Aluminum Foil Tape

425 • 427

Storage Store under normal conditions of 60° to 80°F (16° to 27°C) and 40 to 60% R.H. in

the original carton.

Shelf Life To obtain best performance, use this product within 24 months from date of

manufacture.

The technical information, recommendations and other statements contained in this document are

based upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such

information is not guaranteed.

Technical Information

Many factors beyond 3M’s control and uniquely with user’s knowledge and control can affect the use

and performance of a 3M product in a particular application. User is solely responsible for evaluating the

3M product and determining whether it is fit for a particular purpose and suitable for user’s method of

application. Unless an additional warranty is specifically stated on the applicable 3M product packaging

or product literature, 3M warrants that each 3M product meets the applicable 3M product specification at

the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS

OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY

OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. If the

3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M’s option,

replacement of the 3M product or refund of the purchase price.

Warranty,

Limited Remedy,

and Disclaimer

Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product,

whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted,

including warranty, contract, negligence or strict liability.

Limitation of Liability

This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001: 2000 standards.

ISO 9001:2000

3M is a trademark of 3M company.

Printed in U.S.A.

Recycled Paper

40% pre-consumer

10% post-consumer

Industrial Adhesives and Tapes Division

3M Center, Building 21-1W-10, 900 Bush Avenue

St. Paul, MN 55144-1000

800-362-3550 • 877-369-2923 (fax)