WRWeatherstrip ReferenceWeatherstrip profile identification by shape & measurements
Source-backed identification · Materials

Silicone vs TPE: compare recovery and temperature

Require like-for-like standard, test condition and formulation before interpreting temperature/recovery figures. See the evidence checklist and fit limits.

First decide which metric the reader actually needs: service-temperature category, hardness, or compression-set recovery. A broad TPE family label or a generic silicone temperature range is not a measured result for the installed seal; note the exact compound grade and manufacturer document before comparing values.

Compare a material-category table with a compound datasheet

Worked comparison: put the temperature range printed in Trelleborg’s 2015 material-selection guide in a “material family” column, then record the TSP-LAST M 480-80A datasheet’s measured compression-set result in a separate “named compound and test conditions” column. Do not rank recovery unless the two compounds were tested at comparable temperature, compression and duration; document those conditions beside every number.

Read the named material datasheet for the stated test, duration, temperature and conditions. Category-wide figures or another compound’s lab value do not establish field compatibility or service life.

Evidence item Broad 2015 Trelleborg table Named 2023 compound sheet
Materials compared TPE category vs silicone category TSP-LAST M 480-80A only
Temperatures Application-range comparison Separate static/dynamic limits
Compression set No identical pair supplied here Read the named material datasheet for the stated test, duration, temperature and conditions. Category-wide figures or another compound’s lab value do not establish field compatibility or service life.
Formulation-specific fit Not established Still not established

Reader decision path

  1. Write down the exact profile part number and what it seals; label an unconfirmed model unknown.
  2. Extract material designation, issuer date and whether the number is a category range, test result or application limit.
  3. Put each compression-set result on its own line with test method, test hours and temperature; do not compare unrelated testing conditions.
  4. Request the actual candidate profile's geometry, retention and compression/closing specification before selecting it. A favorable silicone-category limit does not identify a replacement groove or bulb profile.
  5. After an authorized fit, check door movement. DOE's exterior-door job aid says weatherstrip must not impede operation.

Stopping point: If only a marketing range for silicone and a laboratory number for a separate TPE compound are available, the choice remains not proven for this opening. This article teaches evidence comparison, not material-wide superiority. The manufacturer statements above are bounded to the cited versions and formulations.

Publisher references

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