TO 1-1-700 - Robins Air Force Base

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TO 1-1-700 Table 12-1. Sealing Compounds - Continued Specification Types Available Properties Intended Use Av-Dec® HiTak® TufSeal Polyurethane Tape Sealant (part No. HT3000-XXX) Av-Dec® Self-Leveling Green (part No. HT 3326-5- XXX) and Thixoflex Orange Injectable (part No. TF2219) Sealants -100 for fay surfaces ≤1 inch wide -150 for fay surfaces >1 inch up to 1.5 inches wide -200 for fay surfaces >1.5 inches up to 2 inches wide Self Leveling Green - for filling voids and/ or cavities on horizontal surfaces where a self leveling liquid may be used; supplied in either 50cc (-050) or 200 (-200) cartridges; Thixoflex Orange - for filling voids/cavities on horizontal, vertical, or overhead surfaces where a paste material is required; supplied in 50cc cartridges. Preformed gasket tape with adhesive on one side and a permanent Teflon film baking on the opposite side; No mixing, masking, or curing required; Service Temp: -85 ºF to +275 ºF (-65 ºC to +135 ºC); Peel Strength: 2-5 lb./in. width adhesive side only, the other side has a permanent Teflon film backing; No corrosion inhibitors; Resists water, deicing fluids, fuel, oil, and hydraulic fluid. Two component sealants; both are supplied in dual syringes containing the required amounts of resin and hardener for mixing on site; Mixing and dispensing is accomplished with accessories obtained from the vendor per the vendor's instructions; Service Temp: -60 ºF to +260 ºF (-51 ºC to +127 ºC) either type; Peel Strength: both 1-4 lb./in. width; No corrosion inhibitors; Resists water, deicing fluids, fuel, oil, and hydraulic fluid. For fay surface sealing of non-permanent structure such as access and inspection panels/covers to prevent fluid entry into the faying surface areas and the cavities over which the panels/covers are installed. The Teflon® backing is highly abrasion resistant and permits slight movement of the covers without damaging the structure to which it is attached. The tape is very durable, so it may be reused many times once it is installed, and damaged sections are easily repaired as it has very good adhesion to itself. The Self Leveling Green sealant is intended to fill void/cavities on horizontal surfaces to prevent fluids from accumulating in them and causing corrosion while still being easily removed for required inspections and/or operational use. Also useful to fill cavities around antenna connectors. The Thixoflex Orange sealant is intended for filling the same voids/cavities as above as well as those on vertical and overhead surfaces while still being easily removed for required inspections and/or operational use. 12-10
TO 1-1-700 NOTE MIL-S-85420, SEALING COMPOUND, QUICK REPAIR, LOW TEMPERATURE CURING 53 SAE AMS-3277 (MIL-S-29574), SEALING COMPOUND, LOW TEMPERATURE CURING 61 Solvent based adhesion promoters are hygroscopic (absorb moisture) and must be kept away from moisture. Discard material if it becomes cloudy or a precipitate is formed. 12.3.4 Adhesion Promoters. Some sealing compounds may require the application of a special primer or adhesion promoter prior to sealant application in order to develop a good adhesive bond with the surface. Use only those primers or adhesion promoters recommended by the manufacturer for his product. These materials are especially important for MIL- S-85420, SAE AMS-3277 (MIL-S-29574) and some silicone based sealants. See Appendix A in TO 1-1-691 for a listing and description of adhesion promoters. SAE AMS 3255, TAPE, SEALING, POLYTETRAFLUOROETHYLENE 73 12.3.5 SAE AMS 3255 Oil and Water Resistant, Expanded Polytetrafluoroethylene Sealing Tape (EPTFE) (Skyflex®). The sealant tape consists of an extruded gasket (most of the time with several protruding ribs) with a pressure sensitive adhesive backing. No mixing is required and there are no application life constraints or cure times involved. The sealing tape does not require removal and replacement unless damaged. The adhesive backing is only required to hold the sealing tape in place until an access panel, floor panel, or component is reinstalled. Tapes may be special ordered without adhesive backing for use in areas where fluid exposure (e.g., hydraulic fluid or fuel) is expected and applied with a fluid resistant rubber cement. Refer to Table 12-1 for a general description of these tapes. Use of the EPTFE (Skyflex®) sealing tape requires authorization from the equipment SPM engineering authority. 12.3.6 Av-Dec® Polyurethane Sealant Tapes and Two Component Sealants. Av-Dec® sealing tapes are pre-cured polyurethane gasket tapes with the HT3935-7 series having a tacky adhesive on both sides and the HT3000 series having a tacky adhesive on one side and a permanent Teflon film backing on the other side. These tapes require no mixing, have unlimited application life, and require no cure time. The HT3995-7 series tapes are particularly useful for sealing high moisture areas. The HT3000 series are useful for sealing frequently removed inspection and access panels, since once applied they are totally reusable unless damaged; damaged areas only may be removed and replaced. The HT3326-5 self leveling green liquid and TF2219 thick orange paste materials are two component curable sealants that are particularly useful in filling voids and cavities to prevent moisture and fluid accumulation and subsequent corrosion damage in areas where ease of removal for inspection and/or operational requirements is necessary. 12.4 EQUIPMENT. The following equipment is available: NOTE Avoid air bubbles as much as possible during the filleting operation. Allow the sealant to cure, at least, the tack free stage before moving the assembly. 12.4.1 Sealant Gun. The Semco Model 250-A or its equivalent (Figure 12-1) fitted with one of the nozzles from Figure 12-2 is used for the application of fillet seals. When using this gun, the nozzle tip must be pointed into the seam and maintained at a 45 degree angle to the line of travel, forcing the bead of sealing to precede the gun tip to minimize entrapment of air. Use fairing/smoothing tools (i.e., spatulas and spreaders) shown in Figure 12-5 to work sealants and adhesives into seams. Care should be taken when using rivet nozzles to prevent sealant material from filling fastener holes. 12.4.2 Application Nozzles. In addition to the standard, fillet, and ribbon nozzles in Figure 12-2, the countersink and rivet nozzles in Figure 12-3 and Figure 12-4, respectively, can also be used with sealant guns. Countersink nozzles can be 12-11
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TO 1-1-700 TECHNICAL MANUAL CORROSI
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TO 1-1-700 TABLE OF CONTENTS Chapte
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TO 1-1-700 TABLE OF CONTENTS - CONT
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Page 13 and 14:
TO 1-1-700 LIST OF ILLUSTRATIONS -
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TO 1-1-700 FOREWORD 1. PURPOSE. The
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TO 1-1-700 List of Related Publicat
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TO 1-1-700 SAFETY SUMMARY 1. GENERA
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TO 1-1-700 AMS-G-6032, GREASE, PLUG
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TO 1-1-700 MIL-DTL-64159, COATING,
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TO 1-1-700 MIL-PRF-27617, GREASE, A
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TO 1-1-700 O-L-164, DRESSING, LEATH
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TO 1-1-700 MIL-T-81772, THINNER, PO
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TO 1-1-700 tronics equipment and th
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TO 1-1-700 cleaning situation, syst
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TO 1-1-700 c. Riveted joints shall
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TO 1-1-700 c. Remove and replace an
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TO 1-1-700 MIL-L-87177, LUBRICANT,
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TO 1-1-700 Figure 3-1. Simplified C
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TO 1-1-700 resistant, and also at t
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TO 1-1-700 is first noticeable as a
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TO 1-1-700 3.7.8 Oxygen Concentrati
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TO 1-1-700 Figure 3-14. Concentrati
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TO 1-1-700 Figure 3-17. Galvanic Se
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TO 1-1-700 Figure 3-20. Aluminum Su
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TO 1-1-700 3.8.7 CRES/Stainless Ste
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TO 1-1-700 3.9.10 Climate. Warm, mo
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TO 1-1-700 3.11 PREVENTATIVE MAINTE
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TO 1-1-700 CHAPTER 4 COMPOSITE AND
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TO 1-1-700 4.4.4.4 Glass parts shal
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TO 1-1-700 CHAPTER 5 PACKAGING (STO
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TO 1-1-700 extent of damage dependi
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TO 1-1-700 5.15 PRECAUTIONS FOR VCI
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TO 1-1-700 c. Secure the desiccant
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TO 1-1-700 Figure 5-8. Shock Isolat
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TO 1-1-700 Figure 5-9. Examples of
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TO 1-1-700 5.24.10 Rigid or Flexibl
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TO 1-1-700 CHAPTER 6 MOISTURE AND F
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TO 1-1-700 c. 6.2.6 Felt. Examine f
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TO 1-1-700 a. After first directing
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TO 1-1-700 6.4.5.14 Terminals, scre
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TO 1-1-700 NOTE • Authorized clea
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TO 1-1-700 Table 7-1. Cleaning of S
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TO 1-1-700 7.3.1.2.3 Portable, 45 g
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TO 1-1-700 Table 7-2. Common Milita
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TO 1-1-700 inactivity, storage, or
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TO 1-1-700 7.5.6.5.1 Grade 1 - A th
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TO 1-1-700 Table 7-4. Corrosion Pre
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TO 1-1-700 Table 7-5. Preservation
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TO 1-1-700 either case, MIL-PRF-269
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TO 1-1-700 MIL-PRF-85285, COATING,
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TO 1-1-700 c. Cadmium plated surfac
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TO 1-1-700 a. Scuff sand and feathe
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TO 1-1-700 7.7.7.2 If surface is no
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TO 1-1-700 7.7.9.2 Where only parti
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TO 1-1-700 7.8.1 Type I Application
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TO 1-1-700 Extend (Loctite) 32150 J
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TO 1-1-700 There are three ways to
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TO 1-1-700 vulnerable surfaces clea
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TO 1-1-700 Table 8-2. Materials, Th
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TO 1-1-700 Table 8-4. Electronic Cl
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TO 1-1-700 Table 8-5. Accessories o
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TO 1-1-700 Table 8-5. Accessories o
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TO 1-1-700 f. Devices with permanen
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TO 1-1-700 Table 8-7. Cleaning and
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TO 1-1-700 MIL-PRF-87937, CLEANING
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TO 1-1-700 of contamination). Maint
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TO 1-1-700 8.8.2 Protective Coating
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TO 1-1-700 • Tube clamps. • Min
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TO 1-1-700 a. For bonding/grounding
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TO 1-1-700 vertently destroy the mo
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TO 1-1-700 doors, and other corrosi
Page 173 and 174: TO 1-1-700 CHAPTER 10 CORROSION PRO
Page 175 and 176: TO 1-1-700 MIL-PRF-81733, SEALING A
Page 177 and 178: TO 1-1-700 d. After corrosion is re
Page 179 and 180: TO 1-1-700 (3) Stainless/CRES steel
Page 181 and 182: TO 1-1-700 10.9 WATER ENTRAPMENT AR
Page 183 and 184: TO 1-1-700 f. Shield equipment from
Page 185 and 186: TO 1-1-700 b. Use e-inch rivnuts of
Page 187 and 188: TO 1-1-700 10.17.3 If the plating s
Page 189: TO 1-1-700 Figure 10-16. Dissipatio
Page 192 and 193: TO 1-1-700 (2) If allowable damage
Page 194 and 195: TO 1-1-700 Table 11-1. Recommended
Page 196 and 197: TO 1-1-700 11.6 3M CO. SCOTCH-BRITE
Page 198 and 199: TO 1-1-700 11.11.2 Control of Mecha
Page 200 and 201: TO 1-1-700 11.12.2 Mechanical Damag
Page 202 and 203: TO 1-1-700 MIL-DTL-81706 (ALODINE),
Page 204 and 205: TO 1-1-700 11.13.2.3 Application of
Page 206 and 207: TO 1-1-700 only when there is no da
Page 208 and 209: TO 1-1-700 NOTE SEMCO PASA-JELL 101
Page 210 and 211: TO 1-1-700 (CRES), lead, ceramic, g
Page 212 and 213: TO 1-1-700 11.13.7.2 Treatment of C
Page 214 and 215: TO 1-1-700 MIL-A-46106, ADHESIVE/SE
Page 216 and 217: TO 1-1-700 Table 12-1. Sealing Comp
Page 224 and 225: TO 1-1-700 used to apply sealants i
Page 226 and 227: TO 1-1-700 Figure 12-2. Sealant App
Page 228 and 229: TO 1-1-700 Figure 12-4. Rivet Appli
Page 230 and 231: TO 1-1-700 Figure 12-6. Sealant Inj
Page 232 and 233: TO 1-1-700 below and adhere very po
Page 234 and 235: TO 1-1-700 Table 12-2. Time Require
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Page 238 and 239: TO 1-1-700 of 20 to 25 seconds in a
Page 240 and 241: TO 1-1-700 d. Remove all uncured se
Page 246 and 247: TO 1-1-700 Figure 12-12. Typical Me
Page 248 and 249: TO 1-1-700 may be used for low temp
Page 250 and 251: TO 1-1-700 Figure 12-14. Sealing Pr
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TO 1-1-700 - Robins Air Force Base

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