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HomeShop SuppliesAdhesives, Tapes, & SealantsSealantsFuel Tank SealantsPPG Aerospace® PR-1440 Class B Fuel Tank SealantPPG AerospaceŽ PR-1440 B-1/2 Gray AMS-S-8802D Type 2, Class B-1/2 Spec Fuel Tank Sealant - 2.5 oz 655-SemKit
PPG AerospaceŽ PR-1440 B-1/2 Gray AMS-S-8802D Type 2, Class B-1/2 Spec Fuel Tank Sealant - 2.5 oz 655-SemKit
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PPG AerospaceŽ PR-1440 B-1/2 Gray AMS-S-8802D Type 2, Class B-1/2 Spec Fuel Tank Sealant - 2.5 oz 655-SemKit

Part#: 1440B1-2AM655SK
Our Price: $28.84
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Country of Origin: USA
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Material Safety Information
Material Safety Data Sheet: MSDS1
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PPG Aerospace - PRC-Desoto PR-1440 Class B - 1/2 hour application life - Fuel Tank Sealant - 2.5 oz SemKit

PR-1440 Class B sealant is designed for fillet sealaing of fuel tanks and other aircraft fuselage sealing applications. The uncured sealant is a low sag, thixotropic paste suitable for application by extrusion gun or spatula. It cures at room temper­ature to form a resilient sealant having excellent adhesion to common aircraft substrates.

Alternate PN#s: PR-1440B1/2 PR1440B1/2
SAE Spec#: AMS-S-8802 Rev. D, Type 2, Class B-1/2
Product Details
UOM : Each
Size : 2.5 oz
Color Family : Gray
Ship Dimensions : 9 x 6 x 2 inches
Shipping Weight : 0.5 pounds
Manufacturer P/N : 1440B1/2AM655SK
Schedule B Code : 3214.90.5000
Approvals : AMS-S-8802
Approvals : Type
Approvals : 2
Approvals : Class
Approvals : B
Disclaimer: While reasonable efforts have been made to ensure all information on this website is accurate, and Styles Logistics, Inc. do not assume responsibility for any errors or omissions. All specifications, illustrations, data and prices are subject to change without notice.
Application Properties (typical)
Color Part A - Black
Part B - Off White
Mixed - Dark Gray
Mixing ratio by weight Part A: Part B
Base Viscosity 10,000, (1000)
(Brookfield #6 @ 10rpm), Poise (Pa-s)
Application life and cure time
@ 77°F (25°C), 50% RH
  Application life (hours) Tack free time (hours) Cure time to 35 A Durometer (hours)
B-1/2 1/2 <10 30
B-2 2 <36 48

Performance Properties (typical)
Cure Time 14 days @ 77°F (25°C), 50% RH
Cured specific gravity 1.57
Nonvolatile content,(%) 97%
Ultimate cure hardness (Durometer A) 50
Peel strength, pli (N/25 mm),100% cohesion
JRF immersion, 7 days @ 140°F (60°C) JRF/NaCl-H2O immersion, 7 days @ 140°F (60°C)
MIL-A-8625 (Anodized aluminum) - 28 (125) MIL-A-8625 (Anodized aluminum) - 35 (156)
MIL-C-5541 (Alodine aluminum) - 30 (133) MIL-C-5541 (Alodine aluminum) - 35 (156)
MIL-C-27725 (IFT coating) - 30 (133) MIL-C-27725 (IFT coating) - 34 (151)
MIL-S-5059 (Stainless steel)* - 31 (138) MIL-S-5059 (Stainless steel)* - 35 (156)
MIL-T-9046 (Titanium comp. C)* - 36 (160) MIL-T-9046 (Titanium comp. C)* - 30 (133)
QQ-A-250/13 (Alclad) - 25 (111) QQ-A-250/13 (Alclad) - 32 (142)
*Primed with PR-148 Adhesion Promoter
Tensile strength, psi (KPa) 300 (2070) - Standard cure,14 days @77°F(25°C), 50% RH
Elongation, % 363 - Standard cure,14 days @77°F(25°C), 50% RH
Thermal rupture resistance Retains pressure of 10 psi with only negligible deformation, both before and after immersion in JRF.
Low temperature flexibility @ -65°F (-54°C) No cracking, checking or loss of adhesion.
Corrosion resistance No corrosion, adhesion loss, softening, or blistering after 20-day immersion in 2-layer salt water/JRF @ 140°F (60°C).
Resistance to hydrocarbons, Weight loss, % 4.5% - 7 days @ 140°F(60°C) immersed in JRF.
Flexibility No cracks after bending 180 degrees over 0.125 inch (3.18 mm) mandrel.
Repairability to itself Excellent to both freshly cured as well as fuel aged and abraded fillets.
Resistance to other fluids Excellent resistance to water, alcohols, petroleum-base and synthetic lubricating oils, and petroleum-base hydraulic fluids.
Fungus resistance Non-nutrient

Note: The application and performance property values above are typical for the material, but not intended for use in specifications or for acceptance inspection criteria because of variations in testing methods, conditions and configurations.

Surface preparation

Immediately before applying sealant to primed substrates, the surfaces should be cleaned with solvents. Contaminants such as dirt, grease, and/or processing lubricants must be removed prior to sealant application.

A progressive cleaning procedure should be employed using the appropriate solvents and new lint free cloth (reclaimed solvents or tissue paper should not be used). Always pour solvent on the cloth to avoid contaminating the solvent supply. Wash one small area at a time.

It is important that the surface is dried with a second clean cloth prior to the solvent evaporating to prevent the redeposition of contaminants on the substrate. Substrate composition can vary greatly. This can affect sealant adhesion. It is recommended that adhesion characteristics to a specific substrate be determined prior to application on production parts or assemblies.

For a more thorough discussion of proper surface preparation, please consult the SAE Aerospace Information Report AIR 4069. This document is available through SAE, 400 Commonwealth Avenue, Warrendale, PA 15096-0001.

Mixing instructions

PR-1440 Class B is supplied in a two-part kit. Mix according to the ratios indicated in the application properties section. Mix Part A and Part B separately to uniformity, then thoroughly mix entire contents of both parts of the kit to-gether taking care to avoid leaving unmixed areas around the sides or bottom of the mixing container.

Storage life

The storage life of PR-1440 Class B is at least 9 months when stored at temperatures below 80°F (27°C) in original unopened containers.

Health precautions

This product is safe to use and apply when recommended precautions are followed. Before using this product, read and understand the Material Safety Data Sheet (MSDS), which provides information on health, physical and environmental hazards, handling precautions and first aid recommendations. An MSDS is available on request. Avoid overexposure. Obtain medical care in case of extreme overexposure.

For industrial use only. Keep away from children.

For emergency medical information call 1-800-228-5635.

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