Hollow Multi-Cavity Silicone Foam Strip
Food

Hollow Multi-Cavity Silicone Foam Strip

Lightweight silicone foam strip with multi-cavity hollow design, offering excellent elasticity and shock absorption for food industry sealing.

Technical Specifications

Material Silicone Foam
Hardness 20~50 Shore A
Operating Temperature -50°C to 200°C
Specific Gravity 0.35-0.55 g/cm3
Hardness Range 10-35 Shore A
Cell Structure Closed cell
Colour Natural, translucent or Pantone matched
Packing 50 M/roll, or to your requirement
MOQ On request - depends on profile and quantity

Key Features

  • Multi-cavity profile design
  • Lightweight
  • Good elasticity
  • Shock and noise absorbing
  • UL94 V-0 / RoHS compliant

Typical Applications

  • Food machinery seals
  • Packaging equipment gaskets
  • Brewery seals

Selection & Fitting Notes

  • Pick the cell structure first: closed cell for keeping air and water out, open cell for cushioning or venting. They are not interchangeable.
  • Sponge seals work at partial compression. Compressing one down to solid kills the rebound and it will not recover - leave headroom in the design.
  • Sponge is not a pressure seal. Where there is a real pressure differential across the joint, use a solid profile instead.
  • When replacing an existing seal, match density as well as size - density drives both closing force and how it springs back.

Frequently Asked Questions

What is the lead time for Hollow Multi-Cavity Silicone Foam Strip?

Stock profiles of this type are held in inventory and can ship immediately. Custom extrusions of Hollow Multi-Cavity Silicone Foam Strip take 2-4 weeks, including tooling and production. Expedited service is available if you need the parts sooner.

Can I get samples of Hollow Multi-Cavity Silicone Foam Strip before placing a full order?

Yes. We can send prototype samples or run a small trial batch of Hollow Multi-Cavity Silicone Foam Strip so you can test fit, compression set and performance before committing to a production order. Sample policy and freight terms are confirmed together with your quotation.

Do you make the tooling for Hollow Multi-Cavity Silicone Foam Strip in-house?

Yes. We build our own extrusion dies and tooling in-house, which shortens lead times for custom hollow multi-cavity silicone foam strip and keeps dimensional accuracy and batch-to-batch repeatability under tighter control.

Should I choose closed cell or open cell Hollow Multi-Cavity Silicone Foam Strip?

Closed cell if the job is keeping air, dust or water out - the cells are sealed from each other. Open cell if you need cushioning, ventilation or drainage. They are not substitutes for one another, so decide on the function before the size.

Can Hollow Multi-Cavity Silicone Foam Strip replace a solid strip in my existing joint?

Only where there is no real pressure differential. Sponge is a gap filler and a buffer, not a pressure seal - across a pressurised joint a solid profile is the right choice. Send us what the joint has to hold back and we will tell you which one it needs.

Will Hollow Multi-Cavity Silicone Foam Strip take a permanent set over time?

Any sponge will lose some rebound if it is held compressed, and heat and compression both accelerate it. The practical fix is in the design: leave headroom so the seal is not compressed down to solid. Temperature and compression together drive how long it springs back.

Interested in this product?

We typically respond within 24 hours.

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