Sink-side holder insert
Representative part: replaceable sponge in a caddy.
Key axes: open-cell vs skin, thickness, food-contact file.
Buyer decision: whether the search meant the holder body or the insert.
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Translate a project into a silicone sponge holder for kitchen sink requirement, not into a promised result. The holder geometry, the insert compound and the industrial gasket family are different goods even when they share a search string. The buyer still chooses cell structure and Shore A if hardness is used.
Site condition changes the requirement, not only the price. A constantly wet drainboard, a detergent soak, and a heated dishwasher-adjacent surface are different asks.
Representative part: replaceable sponge in a caddy.
Key axes: open-cell vs skin, thickness, food-contact file.
Buyer decision: whether the search meant the holder body or the insert.
Representative part: molded or die-cut caddy.
Key axes: outline, Shore A if used, drain slots.
Buyer decision: molded solid silicone versus cellular sponge.
Representative part: closed-cell sheet later cut to a lid.
Key axes: thickness, density in g/cc, compression set method.
Buyer decision: do not use a dish-pad quote for this line.
Representative part: gap-filler sponge.
Key axes: thickness, density, temperature method.
Buyer decision: whether thermal conductivity is even on the brief.
Representative part: holder plus pad kit.
Key axes: kit contents, packing, barcode if asked.
Buyer decision: which items sit inside the unit price.
Representative part: die-cut insert.
Key axes: outline tolerance, adhesive, lot file.
Buyer decision: sample lot before production.
A silicone sponge holder for kitchen sink callout without cell structure and without the wet/dry site lets the factory pick a default pad. That default may not match the drawing.
| Thermal | Chemical | Mechanical | Compliance |
|---|---|---|---|
| Service temperature in °F or °C at the sink or adjacent heat | Detergent, bleach or food soil named | Cell structure; Shore A if the buyer uses hardness | FDA 21 CFR 177 only when food-contact is requested |
| Continuous wet versus occasional splash | Adhesive on a holder foot if used | Thickness and outline of the insert | Lot document versus a company certificate |
| Dishwasher cycle if the buyer claims it | Oil or fragrance residue if relevant | Whether the part is sponge, solid silicone, or plastic | REACH / RoHS only if the receiving plant files them |
Process engineers sometimes ask whether a silicone sponge gasket should move to FKM. This desk does not pick the polymer. The trade-off is written here so the request can name the medium.
Published silicone windows often run near −60 to +230 °C, with USP Class VI / FDA 21 CFR 177 routes used for food and medical files. Oil swell remains a buyer question; silicone is not assumed oil-tight.
FKM holds sealing force in many oils and fuels where silicone swells. Material cost is typically several times higher. If the sink-adjacent brief is only detergent and water, FKM is usually the wrong family to quote against a dish-pad search.
“A plant that writes silicone sponge holder for kitchen sink on a purchase order still has to say whether the line is the holder, the insert, the cell structure, and which wet-site condition the receiving engineer will accept.”
Checklist language only. Not a named review or a completed shipment.
Missing cell structure or site condition stays visible. We will not invent them to complete the form.
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