Buildings
Structure, lining, insulation or finish depending on family.
PTFE earns its keep in systems: a beam, a batt, a fibre blend, a coated steel — rarely a lone coupon.
Products below are cultural landmarks as much as SKUs.
産業
Transport
Mass, fire and fatigue rewrite the grade list.
Energy
Heat, voltage and hydrogen compatibility.
Consumer
The volume that pays for the mill.
Medical / food
When allowed — extractables and allergies matter.
Defence / safety
Ballistics, FR clothing, fire stops.
製品
Roy Plunkett
1938
Teflon pan
1960s–
Gore-Tex
1969–
Thread tape
1970s–
Pipe liner
1980s–
Labware
1950s–
Space suits lore
1960s
Bearing pads
1970s–
組み合わせ
silicone
The other high-temp elastomer/plastic in kitchens.
polyethylene
The cheap olefin PTFE replaced in hostile chemistry.
glass
Lined steel vs glass-lined — different plants choose differently.
nomex
High-temp textile vs high-temp plastic.
If the pairing is wrong, the material will be blamed for a system fault.