The 325 series is the widest: 4–8 mm at 24# up to 35–100 mm at 120# — the top of the PET range, for heavy cable assemblies and busway-adjacent bundles that still need an expandable, self-extinguishing braid.
| Test standard | UL 1441 |
| Operating temperature | −60 °C to +155 °C (−76 ~ 311 °F) |
| Dielectric (avg. withstand) | — |
| Dielectric (min. individual) | — |
| UL recognition | — |
| Flame rating | UL VW-1 |
Datasheet: full ratings & dimension tables · download PDF
Built for: Heavy cable assemblies, bus bundles, large enclosures — the widest expandable range.
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| Size Class | 120 Series | 125 Series | 320 Series | 325 Series |
|---|---|---|---|---|
| 24# | 3–6 mm | 3–6 mm | 4–8 mm | 4–8 mm |
| 32# | 4–8 mm | 4–8 mm | 5–10 mm | 5–10 mm |
| 36# | 5–10 mm | 5–10 mm | 6–12 mm | 6–12 mm |
| 40# | 6–12 mm | 6–12 mm | 7–14 mm | 7–14 mm |
| 48# | 7–14 mm | 7–14 mm | 8–16 mm | 8–16 mm |
| 56# | 8–16 mm | 8–16 mm | 10–20 mm | 10–20 mm |
| 64# | 9–18 mm | 9–18 mm | 12–24 mm | 12–24 mm |
| 72# | 10–12 mm | 10–12 mm | 15–30 mm | 15–30 mm |
| 96# | 12–24 mm | 12–24 mm | 20–40 mm | 25–50 mm |
| 120# | 15–30 mm | 15–30 mm | 30–70 mm | 35–100 mm |
Send inner diameter, annual volume and target standard — we reply with a sampling plan and lead time.
Request PET-325 SamplesSend these five details with your inquiry and we will reply with a recommended series, sample plan and datasheet: