Find a product


Products found :
See products

Market segment :



High flash point sealant removal and surface cleaning solvent for preparing surfaces prior to paint, bond and sealant application during aerospace OEM & MRO part cleaning operations.

DIESTONE SR is the former PF-SR manufactured by PT Technologies Europe.

DIESTONE SR is a heavy duty, residue free higher flash point solvent based cleaner and degreaser for surface cleaning of gross soils, sealant and adhesive residues, fabrication soils and marking inks during Aerospace MRO and OEM parts cleaning operations. Effectively removes semi-cured polysulphide sealants, RTV materials, Skydrol marks, stickers, tape and combustion residues. It is also an effective cleaning solvent in preparing and cleaning tooling of composite structures.

  • 100% volatile solvent – leaves no residue after complete evaporation
  • Substitute for low flash point solvents such as MEK, IPA & Acetone 
  • Bond breaker to penetrate beneath the adhesive, break the bond and lift from surface 
  • Controlled evaporation rate 
  • Reduces solvent consumption, costs & VOC emissions when moving from fast evaporating solvent cleaners 
  • Suitable for use on metal, solvent resistant organic coatings and composites/composite tooling 
  • Low content of sulphur chlorides, nitrogen, peroxides and acids 
  • Non-corrosive on metals such as copper, aluminium, magnesium, stainless steel etc. 
  • Suitable for cold cleaning solvent immersion or swab/wipe 
  • Available in liquid and pre-saturated on low lint wipes such as SOCOCAT 15233 (a cloth compliant to AMS 3819C qualification requirements)
  • Pre-saturated wipe system eliminates the hazardous storage, transport and logistical issues of loose flammable liquids
Technical Data Sheet

DIESTONE SR is a solvent based cleaning system designed to provide effective surface cleaning of sealant residues, fabrication soils and markings on metallic and composite structures.

  • Removal of difficult contaminants such as uncured sealant and adhesive
  • Semi-cured polysulphide sealant removal tool 
  • Cleaning substrates prior to bonding or sealing and next stage manufacturing 
  • Cleaning particulates and contaminants from metallic & non-metallic materials 
  • Cleaning and preparation of mould surfaces 
  • Pre-cleaning prior to final cleaning operations 
  • Final cleaning prior to painting
  • Degreasing and cleaning prior to overhaul and sealing/jointing work
  • Smoothing sealants to give aesthetically pleasing finish
  • Cleaning of heavily contaminated parts
  • Degreasing of machines/machine parts in situ or on refurbishment
  • Tool cleaning during sealant preparation
  • General purpose cleaner for aircraft exterior surfaces and aircraft engine materials
  • AIRBUS UK : ABR 9-0140 (TYPE 2 & 3) & ABP 8-1294
  • BOEING : D6-17487 REV L
  • SMI : AMS 1526B & ARP 1755B
  • BOMBARDIER : BAPS 180-009
  • Apply a thin film of DIESTONE SR using liquid or a pre-saturated wipe
  • Allow a few minutes for surface action to dislodge contaminants
  • Wipe off with the same pre-saturated wipe or with a clean, dry low lint cloth (recommended)
  • Allow surface to dry and apply coatings / sealing etc.
  • Dispose of all wipes in an appropriate bin
  • Appearance : Fluid liquid (liquid version)
  • Specific gravity : 0.91 (liquid version)
  • Flash point : 59°C/138°F (liquid version)

Should you need any further information on this product
please see our North American website :

Should you need any further information on this product
please see our North American website :