Prestolok push-in stop plug — closes the end of a pneumatic tube
TECTUL · Dispatch across Colombia · Exports to Central & South America
Male-profile push-in plug: it inserts directly into the open end of a pneumatic tube section to close it (unlike an NPT plug, which blanks a threaded port). PBT or polypropylene body depending on the reference. The manufacturer documents 8 diameters: 4, 6, 8, 10 and 12 mm, and 1/4″, 3/8″ and 1/2″.
IMPORTANT: reference data — may differ from the physical product; verify with an advisor before buying.
SKU VT-RAC-TAPONPRESTO (push-in plug) · 8 metric and imperial diameters · sold by the unit
1. Technical specifications
| Diameter | L [mm] | Weight [g] |
|---|---|---|
| 4 mm | 30.00 | 0.30 |
| 6 mm | 33.00 | 0.50 |
| 8 mm | 38.00 | 0.60 |
| 10 mm | 42.00 | 0.70 |
| 12 mm | 43.20 | 3.00 |
| 1/4″ | 32.70 | 0.40 |
| 3/8″ | 40.50 | 2.50 |
| 1/2″ | 45.00 | 3.20 |
IMPORTANT
This technical data sheet is a reference guide to the properties of this product type; it is not a quality certificate for the product you are buying. The measurements, dimensions and physical or geometric characteristics of the product supplied may vary by manufacturer, heat and lot, and may even fall outside the cited standards. If any of these figures is critical to your design or build, verify it with one of our advisors against the physical product or the lot's mill certificate, so you can be fully certain of what you are buying. · Original data sheet: tectul.com/en/conduccion-de-fluidos/racores-y-acoples/ficha-tecnica-tapon-prestolok-polipropileno.html
Complete, verified manufacturer table (May 2022 revision).
| Product | Push-in plug, inserts into the open end of a pneumatic tube to close it |
| Material | PBT/polypropylene |
| Commercial range | 4, 6, 8, 10, 12 mm · 1/4″, 3/8″, 1/2″ |
2. Frequently asked questions
Does this plug close a threaded NPT port?
No. This plug inserts into an open pneumatic tube; to close a threaded port use an NPT plug (see the FT-TC-RAC-TAPATAPON-BRONCE-001 sheet for the bronze version).
Why does the 12 mm weigh noticeably more than the rest?
It corresponds to a larger-section body for that diameter per the manufacturer sheet; the figure was not adjusted or corrected.
3. Application notes
Feasibility
Suitable for temporarily or permanently closing the open end of a low-pressure pneumatic air, gas, oil or water tube section.
Installation
Cut the tube square and burr-free; insert the plug fully to the stop. To remove it, push the collet of the fitting where the tube was inserted if applicable, or pull the plug directly if the tube end is free.
Design
Verify the tube's exact outer diameter before purchasing. Confirm the pressure rating with the supplier.
4. Technical notice and limitation of liability
The pressures, dimensions, weights and other characteristics in this sheet are theoretical calculation values obtained from nominal properties published in the standards cited (ASME B36.10-2022, ASME B31.3-2024, ASTM A106/A106M-19a, ASTM A53/A53M-24, API Spec 5L 46th ed.). They guide selection; they are not a certificate of conformity for any given lot.
The actual behavior of each lot varies with manufacturing — wall tolerance (up to −12.5%), out-of-roundness, residual stresses — and with the raw material — chemical composition within the ranges the standard allows, heat-to-heat differences. To certify a lot, the tests defined by its product standard are required: tensile test, flattening test and hydrostatic test, documented in the manufacturer's mill test certificate (MTC), which TECTUL supplies upon request; testing of the lot in an independent laboratory can also be arranged.
These values must not be used as the sole criterion in critical or safety applications, or wherever failure of the line may compromise people, property or the environment: in such cases the design belongs to the project's responsible engineer under the applicable code (ASME B31.3, B31.1 or the one governing the installation), with the design temperature, corrosion allowance and load cases of the actual service. Before deciding with these data, consult our technical team.
Sources
- Ficha de fabricante "Tapón Prestolok" (catálogo de racores push-in neumáticos, IMR/TECTUL, revisión mayo 2022): tabla completa de L y peso para 8 diámetros métricos e imperiales
This data sheet is the property of TECTUL, part of the Industrias IMR group. Reproduction without attribution is prohibited. Original document and updates: tectul.com/en/conduccion-de-fluidos/racores-y-acoples/ficha-tecnica-tapon-prestolok-polipropileno.