penetrants
Things that permeate
Penetrants are substances designed to pass through or into materials.
In industrial testing, a penetrant is a dye that seeps into surface cracks to reveal flaws invisible to the naked eye.
Lubricants marketed as penetrants work their way into rusted or seized mechanisms: Apply penetrant to the frozen bolt and wait.
The term also appears in studies of skin absorption and chemical permeability.
Process of spreading throughout
- diffusionPassive molecular spreading
- transdermalPassing through skin
- membraneThin tissue sheet
- osmosisSolvent crossing semipermeable barrier
infiltration · seepage · ingress · porosity · permeability · sorption · capillary · wicking
Causing no harm
- inspectionFormal assessment of condition
- fluorescentEmitting light when energized
- flawImperfection in something
- defectInherent imperfection or fault
developer · indication · sensitivity · emulsifier · visible · ultraviolet · discontinuity · porosity
Multi-use lubricant spray
- seizedTook suddenly, forcefully
- corrosionChemical wearing away
- freeingReleasing from confinement
- boltThreaded rod for nuts
thread · creeping · wick · crevice · spray · aerosol · loosener · stuck
Gap-blocking substance
- waterproofingMaking impervious to moisture
- primerPreparatory coat or guide
- preservativeAgent preventing spoilage
- water-repellentResisting water penetration
masonry · substrate · bonding · adhesion · protective
permeation
Process of spreading throughout
- diffusionPassive molecular spreading
- transdermalPassing through skin
- membraneThin tissue sheet
osmosis · infiltration · seepage · ingress · porosity · permeability · sorption · capillary · wicking · impregnation
nondestructive
Causing no harm
- inspectionFormal assessment of condition
- fluorescentEmitting light when energized
- flawImperfection in something
defect · developer · indication · sensitivity · emulsifier · visible · ultraviolet · discontinuity · porosity · welds
WD-40
Multi-use lubricant spray
bolt · thread · creeping · wick · crevice · spray · aerosol · loosener · stuck · frozen
sealant
Gap-blocking substance
- waterproofingMaking impervious to moisture
- primerPreparatory coat or guide
- preservativeAgent preventing spoilage
water-repellent · masonry · substrate · bonding · adhesion · protective
penetrantssealants
Leak-preventing compounds
sealers · barriers · blockers · coatings · waterproofers
penetrantsrepellents
Substances that drive away
water repellents · excluders · resistors · deflectors · shields