Closed-cell
Water-blocking sponge. Buyer still states thickness and density.
silicone sponge
Silicone Sponge Sourcing is an independent procurement desk for US business buyers. We do not manufacture silicone sponge, hold a warehouse, or publish a price list. A complete brief names cell structure, thickness in inches or millimetres, density in g/cc, quantity, destination, and whether the line is sheet, roll or adhesive-backed.
US search observation for this family (Ahrefs export dated 2026-07-22; home-term row observed 2026-07-17) recorded Volume 900 for silicone sponge. That figure is a past measurement, not current rank or a promised inquiry volume.
Open-cell
Breathable sponge. Do not treat as interchangeable with closed-cell on the same seal.
Sheet stock
Cut later. Width and Shore A if used stay on the request.
Adhesive-backed
Liner and adhesive chemistry are separate confirmation items.
- REACH file on the quoted sponge, if requested
- RoHS statement tied to the same item
- FDA 21 CFR 177 only when food-contact grade is named
- ISO 9001 is a plant system, not a sponge rating
Which purchasing requirements separate silicone sponge from neighbouring options
A silicone sponge brief names a cellular elastomer by cell structure, thickness and density. A kitchen-sink holder, a dish-cleaning pad, or a foam-rubber cord is a different request even when the search shares this family. The buyer still chooses those axes; the factory only confirms what it can expand or laminate.
| Thermal | Chemical | Mechanical | Compliance |
|---|---|---|---|
| Service temperature in °F or °C with the medium | Water, detergent, oil mist or food fluid named | Thickness in inches or millimetres | ASTM D1056 or the method named on the item |
| Continuous versus intermittent heat | Adhesive solvent resistance if backed | Density in g/cc or an equivalent unit | Lot document versus a company certificate |
| Low-temperature flexibility in storage | Ozone or UV on an outdoor cover | Cell structure and Shore A if hardness is used | FDA 21 CFR 177 only when food-contact is on the brief |
Closed-cell versus open-cell on the same silicone sponge brief
These columns are selection questions. They are not two stocked SKUs this desk can ship. A factory that answers one column and silently fills the other is quoting a different part.
| Axis the buyer writes | Closed-cell inquiry | Open-cell inquiry |
|---|---|---|
| Water path | Ask whether the quoted cell structure blocks liquid at the named thickness | Expect liquid to pass unless a skin or coating is written on the same line |
| Density in g/cc | Factory fills a number and method; 0.25–0.55 g/cc appears on many published closed-cell silicone sponge TDS pages and is not a rating this desk reprints as its own | Often lower; still needs a method, not “soft foam” |
| Compression set | Ask ASTM D395 condition and time if the part is a gasket | Same method if used; do not compare a dishwashing pad to a gasket table |
| Shore A | Only if the buyer uses hardness; do not mix Shore D on the same line | Often omitted on dish pads; write “not used” instead of inventing 30A |
| Adhesive backing | Liner type and temperature limit belong next to thickness | Same rule; mixed-stream recycling is a buyer note, not an ESG claim here |
What an independent silicone sponge request has to contain
Before factories can answer on the same line, the brief needs form, thickness, density, quantity by configuration, destination, and the documents that must travel with the lot. Missing axes become silent factory defaults.
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1
Name the form first
Closed-cell, open-cell, sheet, roll or strip, adhesive-backed. Neighbouring wording is useful only when the factory writes that it is the same configuration.
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2
Ask for observed axes, not a guessed rating
Thickness in inches or millimetres; density in g/cc; cell structure; Shore A if used; service temperature in °F or °C with the method.
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3
Keep buyer decisions on the buyer side
Food-contact files, outdoor UV, and whether the part is a gasket, a dish pad or a sink-holder insert remain your choices. This desk will not substitute a neighbouring polymer to complete a quote.
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4
Compare total cost, not a unit cell
Packing, Incoterms and the document set sit next to the money figure. There is no published “below market” percentage.
5
Reviewed inquiry forms in this family
4
Axes a factory must confirm before a price holds
0
Warehouse SKUs claimed by this desk
900
Measured US Volume for silicone sponge (Ahrefs row, 2026-07-17)
Where a silicone sponge brief usually starts
These cards are purchase contexts, not promised installations. Click through to turn a site condition into axes.
Enclosure gaskets
Thermal pads
Sink holders
Dish pads
File-driven lots
Procurement situations used to write a silicone sponge brief
These cards are checklists, not customer testimonials. No named reviewer, shipment or saving is claimed.
“If two plants hear ‘silicone sponge’ and one quotes open-cell dishwashing pad while the other quotes closed-cell gasket sheet, the unit prices are not the same goods.”
“A kitchen-sink holder brief still has to say whether the sponge is the insert, the holder body, or only a retail search string sitting next to the industrial family.”
“Thickness without a method and density without a unit lets the factory pick a catalogue default. That default may not match the drawing.”
Send the silicone sponge brief you already have
Share form, quantity, destination and the axes you can fill. Missing fields stay visible. We will issue the same list to more than one factory so the replies can be laid side by side.