unbreakable
airtight
ballproof
bombproof
bulletproof
burglarproof
chip-proof
corrosionproof
dampproof
fire-resisting
fireproof
flameproof
foolproof
fractureproof
hermetic
holeproof
impervious to
infrangible
leakproof
noiseproof
nonbreakable
proof
proof against
punctureproof
resistant
rustproof
shellproof
soundproof
tight
unshatterable
watertight
weatherproof
airhydraulic
comment-spam
glassless
glasslike
inch-thick
magnify
mixed-signal
non-cpu
quizzing
rain-streaked
thermo-dump
triple-paned
wire-framed