PTFE in 1970s: Thread seal tape
Read the condition on PTFE before the nickname. Year 1970s, line “Thread seal tape,” figure 327. English-language RFQs for PTFE often mix ASTM and EN clauses. Pick one family per project.
This atlas treats PTFE as a system: mill route, coatings, tests and the cavity it sits in. Conductivity note: ~0.25 W/m·K. Insulation score 32/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: high OI but pyrolysis fumes. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
Origin: DuPont 1938 Plunkett, United States. The process chapter follows feedstock → conversion → forming → finish → install. Uses span buildings to defence / safety. Pairings matter: silicone. Circularity mark 24/100. Ask which scrap, which certificate, which year. Related atlas entries, a short glossary, and three threads that keep PTFE honest.
The other high-temp elastomer/plastic in kitchens. The cheap olefin PTFE replaced in hostile chemistry. Lined steel vs glass-lined — different plants choose differently. High-temp textile vs high-temp plastic. EN 13501-1 reaction-to-fire letter (A1–F), not a wall rating. Thermal conductivity in W/m·K. Lower means better bulk insulation.
The label keeps PTFE, 1970s, and 327. “Thread seal tape” is the condition on the figure.1970s
Figures to keep
- Year of the condition
- 1970s
- Property figure
- 327
- Material
- PTFE
- Use line
- Thread seal tape
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