PR 1422 class b 09 10 08 TDS Conversion - PPG AEROSPACE

1 T E C H N I C A L D ATA. PR-1422 class B Fuel Tank Sealant Description Performance Properties PR-1422 class B is an aircraft integral fuel tank ( Ty p i c a l ). sealant. It has a service temperature range from Cured 14 days @ 77 F (25 C), 50% RH. -65 F (-54 C) to 250 F (121 C), with intermittent Cured specific gravity excursions up to 275 F (135 C). This material is designed for fillet sealing of fuel tanks and other air- Nonvolatile content, % 92. craft fuselage sealing applications. The cured sealant Ultimate cure hardness, maintains excellent elastomeric properties after pro- Durometer A 55. longed exposure to both jet fuel and aviation gas. Peel strength, pli (N/25 mm), 100% cohesion PR-1422 class B is a two-part, dichromate cured poly- JRF immersion, 7 days @ 140 F (60 C). sulfide compound. The uncured material is a low MIL-A-8625 (Anodized aluminum) 38 (169). sag, thixotropic paste suitable for application by MIL-C-5541 (Alodine aluminum) 39 (173).

2 Extrusion gun or spatula. It cures at room tempera- MIL-C-27725 (IFT coating) 39 (173). ture to form a resilient sealant having excellent adhe- MIL-S-5059 (Stainless steel)* 36 (156). sion to common aircraft substrates. MIL-T-9046 (Titanium comp. C)* 32 (142). The following tests are in accordance with AMS-S- QQ-A-250/13 (Alclad) 35 (156). 8802 class B specification test methods. JRF/NaCl-H2O immersion, 7days @ 140 F (60 C). MIL-A-8625 (Anodized aluminum) 38 (169). Application Properties MIL-C-5541 (Alodine aluminum) 39 (173). ( Ty p i c a l ) MIL-C-27725 (IFT coating) 39 (173). Color MIL-S-5059 (Stainless steel)* 35 (156). Part A Black MIL-T-9046 (Titanium comp. C)* 30 (133). Part B Light brown QQ-A-250/13 (Alclad) 32 (142). Mixed Brown *Primed with PR-148 Adhesion Promoter Mixing ratio Part A:Part Tensile strength, psi (KPa). By weight :100 Standard cure, 14 days Base viscosity @ 77 F (25 C), 50% RH 370 (2551). (Brookfield #7 @ 2 rpm), 14 days immersion in JRF.

3 Poise (Pa-s) 13,000 (1300) @ 140 F (60 C) 200 (1379). Slump, inches (mm) 7 days @ 250 F (121 C) 500 (3448). Initial 50 Minutes 90 Minutes 72 hours immersion in JRF @ 140 F (60 C), B-1/2 ( ) + 72 hours @ 120 F (49 C), + 7 days B-2 ( ) ( ) ( ) @ 250 F (121 C) 500 (3448). Application life and cure time @ 77 F (25 C), 50% RH 24 hours @ 250 F (121 C), + 7 days Cure time immersion in JRF @ 140 F (60 C) 200 (1379). Application Tack free to 35 A Elongation, %. life time Durometer Standard cure, 14 days (hours) (hours) (hours) @ 77 F (25 C), 50% RH 310. B-1/2 1/2 <8 24. B-2 2 <20 36 14 days immersion in JRF. @ 140 F (60 C) 320. 7 days @ 250 F (121 C) 210. 72 hours immersion in JRF @ 140 F (60 C), + 72 hours @ 120 F (49 C), + 7 days @ 250 F (121 C) 170. W h e r e S m a r t S o l u t i o n s Ta k e F l i g h t . PR-1422 class B Fuel Tank Sealant Elongation, % Substrate composition can vary greatly. This can affect 24 hours @ 250 F (121 C), + 7 days immersion in sealant adhesion.

4 It is recommended that adhesion JRF @ 140 F (60 C) 230 characteristics to a specific substrate be determined Thermal rupture resistance - Retains pressure of 10 prior to application on production parts or assemblies. psi with only negligible deformation, both before and For a more thorough discussion of proper surface after immersion in JRF. preparation, please consult the SAE AEROSPACE Low temperature flexibility @ -65 F (-54 C) - No Information Report AIR 4069. This document is avail- cracking, checking or loss of adhesion. able through SAE, 400 Commonwealth Avenue, Warrendale, PA 15096-0001. Corrosion resistance - No corrosion, adhesion loss, softening, or blistering after 20-day immersion in 2- Mixing Instructions layer salt water/Jet reference test fluid at 140 F. PR-1422 class B is supplied in a two-part kit. Mix Resistance to hydrocarbons - 7 days @140 F (60 C) according to the ratios indicated in the application immersed in JRF.

5 Properties section. Mix Part A and Part B separately Weight loss, % to uniformity, then thoroughly mix entire contents of Flexibility - No cracks after bending 180 degrees over both parts of the kit together taking care to avoid inch ( mm) mandrel. leaving unmixed areas around the sides or bottom of the mixing container. Repairability to itself - Excellent to both freshly cured as well as fuel aged and abraded fillets. Storage Life Resistance to other fluids - Excellent resistance to The storage life of PR-1422 class B is at least 9 months water, alcohols, petroleum-base and synthetic lubricat- when stored at temperatures between 40 F (5 C) and ing oils, and petroleum-base hydraulic fluids. 80 F (27 C) in original, unopened containers. Fungus resistance Non-nutrient Health Precautions Note: The application and performance property This product is safe to use and apply when recom- values above are typical for the material, but not intend- mended precautions are followed.

6 Before using this ed for use in specifications or for acceptance inspec- product, read and understand the Material Safety tion criteria because of variations in testing methods, Data Sheet (MSDS), which provides information on conditions and configurations. health, physical and environmental hazards, handling precautions and first aid recommendations. An MSDS. Surface Preparation is available on request. Avoid overexposure. Obtain Immediately before applying sealant to primed medical care in case of extreme overexposure. substrates, the surfaces should be cleaned with For industrial use only. Keep away from children. solvents. Contaminants such as dirt, grease, and/or Additional information can be found at: processing lubricants must be removed prior to sealant application. For sales and ordering information call A progressive cleaning procedure should be employed 1-800-AEROMIX (237-6649). using appropriate solvents and a new lint-free cloth conforming to AMS 3819.

7 (Reclaimed solvents or tis- sue paper should not be used.) Always pour solvent on the cloth to avoid contaminating the solvent sup- ply. 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. All recommendations, statements, and technical data contained herein are based on tests we believe to be reliable PRC-DeSoto International, Inc. and correct, but accuracy and completeness of said tests are not guaranteed and are not to be construed as a war- 12780 San Fernando Road ranty, either expressed or implied. User shall rely on his own information and tests to determine suitability of the Sylmar, CA 91342. product for the intended use and assumes all risks and liability resulting from his use of the product. Seller's and manu- Telephone (818) 362-6711. facturer's sole responsibility shall be to replace that portion of the product of this manufacturer which proves to be Toll Free (800) AEROMIX.

8 Defective. Neither seller nor manufacturer shall be liable to the buyer or any third person for any injury, loss, or dam- age directly or indirectly resulting from use of, or inability to use, the product. Recommendations or statements other than those contained in a written agreement signed by an officer of the manufacturer shall not be binding upon the Issue Date: 09/10. manufacturer or seller. Supersedes: 09/09. Lit: 0157. Printed i