REACH
SVHC statement on the quoted tubing if the duty requires it.
Files belong to a quoted silicone tubing line
These short names are asks sent to a named supplier. They are not badges Silicone Tubing Sourcing earned. A plant certificate does not replace a lot test on the quoted inner diameter, wall and compound.
RoHS
Only when the receiving plant files electrical-adjacent goods.
FDA 21 CFR 177
Only when the buyer named a food-contact duty and a grade plus lot.
ISO 9001
Supplier system file; not a substitute for the dimensional page.
USP Class VI
Ask only if the medical duty names the method and the lot.
ASTM method
Method and condition for hardness, tensile or tear if those axes are used.
What stays on the buyer’s side of the brief
These six points separate silicone tubing from a neighbouring hose or gasket request. They are checklist questions, not published ratings this desk can reprint.
Inner and outer diameter
Write both in the same unit. A quote that lists only one diameter is not yet comparable to a drawing that uses both.
Wall thickness
State inches or millimetres. “Standard wall” lets the factory pick a catalogue default that may fail incoming inspection.
Cure system
Platinum cured versus peroxide cured is a compound decision. If the duty names platinum cured silicone tubing, write that on the same line as ID and OD.
Reinforcement
Unreinforced tube and braid- or fabric-reinforced tube are different goods. A swap has to be written, not implied by a cheaper unit number.
Shore A if hardness is used
Shore A and Shore D are not interchangeable. Ask for the durometer method only when the receiving plant inspects hardness.
Length and packing
Coil, cut-to-length or reel changes the invoice line. Write quantity against each length, not as a lump metreage.
Axes the factory fills on a silicone tubing quote
Observed family pages talk in axes, not in a number this desk reprints. Open a group to see the questions that have to appear on the same request.
| Ask | Why it stays on the request |
|---|---|
| Inner and outer diameter | Together they define bore and envelope. One number is not a tube. |
| Wall thickness in inches or millimetres | Wall governs flow, collapse and fitting grip. |
| Cut length or coil length | Packing and scrap change total procurement cost. |
| Tolerance on ID / OD / wall | A fitting that works on a drawing may not work on a “commercial” tolerance. |
| Ask | Why it stays on the request |
|---|---|
| Service temperature in °F or °C with the medium | A published figure without the medium is not a duty statement. |
| Platinum or peroxide cure | Cure residue and extractables differ; do not treat them as synonyms. |
| Shore A if hardness is inspected | Soft silicone around 30A is not the same inspection as a 70A elastomer. |
| Tensile strength in MPa or psi | Use the unit the receiving plant records; do not convert silently. |
| Ask | Why it stays on the request |
|---|---|
| Lot material declaration | A company ISO letter does not name the quoted extrusion. |
| Dimensional report | ID, OD and wall have to be measured on the quoted item. |
| Named ASTM or equivalent method | The report should cite the method and the condition it was run under. |
| Food-contact or USP file | Only when the duty names it; the file has to name grade and lot. |
Where buyers usually start a silicone tubing brief
These are job contexts, not promised results. The same family still needs inner and outer diameter, wall and destination before anyone can compare wholesale quotes.
Medical fluid paths
Representative part: transfer or peristaltic line. Key ask: USP Class VI or ISO 10993 only if the duty names the method. Common file: lot-level biocompatibility, not a plant brochure.
Food and beverage transfer
Representative part: clear or translucent tube. Key ask: FDA 21 CFR 177 on the quoted grade and lot. Common file: food-contact declaration tied to the extrusion, not the trading company.
Air-pump and instrument hose
Representative part: silicone tube air pump hose pipe wording on a buyer search. Key ask: working pressure in psi if the line carries air. Common file: burst or working-pressure note from the factory, not a reprint here.
Process and CIP loops
Representative part: reinforced silicone tubing. Key ask: medium, temperature and whether braid is required. Common file: temperature and medium statement on the quoted construction.
OEM assemblies
Representative part: cut-to-length pieces for a fixture. Key ask: ID/OD tolerance against the fitting. Common file: dimensional page plus the drawing revision.
Lab and R&D lots
Representative part: small coils for trial. Key ask: sample versus production split. Common file: the same axes on both lots so later batches stay comparable.
Documents to request, not badges this desk displays
Silicone Tubing Sourcing does not hold these files. Ask the named supplier for the current document that covers the quoted item.
REACH SVHC
Statement dated for the quoted compound. A plant-wide letter is not a lot file.
FDA 21 CFR 177
Only when food contact is named. The file must name grade and lot.
USP Class VI
Ask when the medical duty names the method. Do not treat “medical grade” wording as the test.
Dimensional report
ID, OD and wall on the quoted extrusion. A family brochure is not a measurement.
4
Request axes that must travel together: ID/OD, wall, quantity, destination
5
Reviewed inquiry forms on this family, each still awaiting supplier confirmation
0
Stocked SKUs, published price list or factory identity claimed by this desk
3
Factory quotes we can lay side by side when the same axes are answered
Send the silicone tubing brief as you have it
Share product, specification, quantity and destination. Missing fields stay visible. We compare factory wholesale quotes on the same line; we do not publish a market-beating percentage.