PPG Aerospace® PR-1750 B-1/2 Gray AMS-3276E Class B-1/2 Spec Fuel Tank Sealant - 2.5 oz 655-SemKit

PPG Aerospace® PR-1750 B-1/2 Gray AMS-3276E Class B-1/2 Spec Fuel Tank Sealant - 2.5 oz 655-SemKit
Our Part #: SGP18834
Manufacture Part #: 1750B1-2AM655SK
Our Price: $75.72
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PPG Aerospace® PR-1750 B-1/2 Fuel Tank Sealant from SkyGeek is an integral fuel tank sealant with some serious sealing power. The fuel tank sealant has a service temperature range from -65ºF (-54ºC) to 250ºF (121ºC), but can also withstand intermittent exposure to temperatures as high as 360ºF (182ºC) without failure. The sealant works best for fillet sealing, but can be used for other fuselage sealing applications as well. Once cured, PPG Aerospace® PR-1750 B-1/2 Fuel Tank Sealant maintains its excellent elastomeric properties, even after prolonged exposure to jet fuel and aviation gas.

PPG Aerospace® PR-1750 B-1/2 Fuel Tank Sealant is a two-part formula that is designed to be mixed just before use. The sealant is sold in a 2.5-ounce 655-SemKit where the two components are kept separate until use. This ensures that the PR Class B-1/2 sealant is in its most active form when applied, delivering the best adhesion and seal. PPG Aerospace® PR-1750 B-1/2 Fuel Tank Sealant cures readily at room temperature.

Features

Application Properties (typical)
Color Part A - Black
Part B - Beige
Mixed - Dark Gray
Mixing ratio by weight Part A: Part B
10:100
Base Viscosity 12,000, (1200)
(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 24
B-2 2 <24 48

Performance Properties (typical)
Cure Time 14 days @ 77°F (25°C), 50% RH
Cured specific gravity 1.58
Nonvolatile content,(%) 97%
Ultimate cure hardness (Durometer A) 50
Peel strength, pli (N/25 mm),100% cohesion
AMS 2629 JRF immersion, 7 days @ 140°F (60°C) AMS 2629 JRF/NaCl-H2O immersion, 7 days @ 140°F (60°C)
AMS 2471 (Anodized aluminum) - 34 (151) AMS 2471 (Anodized aluminum) - 39 (173)
AMS 4901 (Titanium)* - 35 (156) AMS 4901 (Titanium)* - 41 (182)
AMS 5516 (Stainless steel)* - 34 (151) AMS 5516 (Stainless steel)* - 39 (173)
MIL-C-5541 (Alodine aluminum) - 34 (151) MIL-C-5541 (Alodine aluminum) - 39 (173)
MIL-C-27725 (IFT coating) - 35 (156) MIL-C-27725 (IFT coating) - 37 (164)
*Primed with PR-148 Adhesion Promoter
Tensile strength, psi (KPa) 420 (2896) - Standard cure,14 days @77°F(25°C), 50% RH
Elongation, % 250 - 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 : 4.0% - 7 days @ 140°F(60°C) immersed in AMS 2629 JRF.
Swell : 8.9% - 7 days @ 140°F(60°C) immersed in AMS 2629 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
Shaving and sanding No rolling or tearing

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-1750 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-1750 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.

Downloads

download icon Safety Data Sheet

Country of Origin
United States
Size
2.5 oz
Shipping Weight
0.51 pounds
ECCN
EAR99
Color Family
Gray
Manufacturer P/N
PR-1422 B-1/2
Schedule B Code
3214.10.0010
Pack Quantity
1
Ship Dimensions
18 x 5 x 2 inches
Size
2.5 oz 655-SemKit
Spec
AMS 3276E Class B-1/2
Class
B-1/2
Color
Gray
SAE Spec#
AMS 3276E Class B-1/2
Alternate PN#s
PR1750B1/2