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Aviation Products // Line Maintenance & Exterior Cleaning

Aircraft Lavatory Pipe Cleaner
  • Acetic acid or Sulphamic acid based formulas
  • Used for unblocking of all types of sanitary systems
  • Quick and easy - pour directly into affected areas
  • Unblock: Active - Acetic Acid
  • Unblock-S: Active - Sulphamic Acid
  • Crushed ice not required for Unblock-S


During normal daily use aircraft, toilets carry solid and liquid wastes that form limescale, calcium and other deposits throughout the system. Callington Unblock-S has been specially designed to deal with these build-ups and help maintain a fully functioning toilet system.

Directions for Use

See Technical Data Sheet on Unblock and Unblock-S for specific directions for use.


• AMS 1640B
• BSS 7432

Physical Properties

See Technical Data Sheet for further details.

Ordering Info

Acetic Acid AR0000042 10 x 2L / ctn Global
Sulphamic Acid 5120/33 8 x 2L / ctn Global