POB #4 Perfect Seal Sealant - 16 OZ

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Ships same day if ordered by 3pm CST
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MSRP: $20.40
FBO Price: $13.60
— You save $6.80


The use of POB #4 Perfect Seal sealant (POB) and silk thread has been used generally for sealing finished parting surfaces that do not employ gaskets. This practice has always been satisfactory when correctly applied. However, Lycoming tested and approved General Electric Company's RTV-102 and LOCTITE-515 as alternate sealants which may be used at field service overhaul facilities where trouble may have been experienced in applying POB and silk thread.

  • Used worldwide in the automotive, aircraft and marine industries
  • Liquid sealant designed to meet rigid requirements of OEM specifications.
  • Non-hardening and resists extreme temperatures.
  • Seals all gaskets and threaded connections.
  • Prevents corrosion of bolts, studs and fitting threads.
  • Resistant to gasoline, oils, steam, salt-water, antifreeze and propane.
  • Withstands temperatures from -50 F to 400 F.


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Disclaimer: While reasonable efforts have been made to ensure all information on this website is accurate, Aircraft Specialties Services does not assume responsibility for any errors or omissions. All specifications, illustrations, data and prices are subject to change without notice. Applications and interchangeability information depicted on this website is strictly for reference only. Installers must consult the engine/airframe IPC for the manufacturer’s approved data.