Silicone Sponge Rubber Strip

Cellular silicone rubber strips in rectangular cross-section for thermal insulation and gasketing in HVAC systems. HTS 4008.19.80.00 covers such vulcanized cellular rubber strips simply cut to length. Excludes textile-covered belting per chapter note.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.3%+35.0%38.3%
🇲🇽Mexico3.3%+10.0%13.3%
🇨🇦Canada3.3%+10.0%13.3%
🇩🇪Germany3.3%+10.0%13.3%
🇯🇵Japan3.3%+10.0%13.3%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3910.00.00Lower: 38% vs 38.3%

If unvulcanized silicone rubber

Unvulcanized silicone in primary forms (plates/sheets) classifies under 3910, not vulcanized rubber.

4016.99.60Lower: 37.5% vs 38.3%

If specifically articles like floor coverings

Finished cellular rubber articles (mats, tiles) move to 4016; raw sheets remain in 4008.

4008Same rate: 38.3%

If floor covering sheets

Cellular rubber specifically for floor coverings has dedicated subheading within 4008.

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Import Tips & Compliance

Certify silicone as synthetic rubber per chapter note 2 definition (vulcanizable, elongation/recovery test compliant)

Ensure strip width/thickness qualifies as 'strip' per chapter note 8 (regular geometric shape, simply cut)

Avoid packaging as sets with metal/hardware, which could trigger 4008.90 or Section XVI classification

Related Products under HTS 4008.19.80.00

Neoprene Foam Sheet

A flexible sheet made from cellular vulcanized neoprene rubber, used for gaskets, seals, and insulation in industrial applications. It falls under HTS 4008.19.80.00 as it is a plate/sheet of cellular rubber, other than hard rubber, not specifically provided for elsewhere. The cellular structure provides compressibility and buoyancy.

EVA Foam Rubber Pad

Ethylene-vinyl acetate (EVA) cellular rubber sheets cut to rectangular pad shapes for flooring, mats, and protective packaging. Classified under 4008.19.80.00 as uncut or simply cut rectangular cellular rubber sheets of vulcanized rubber. Meets chapter notes for plates/sheets as blocks of regular geometric shape.

Nitrile Foam Rubber Sheet

NBR (nitrile butadiene rubber) cellular foam sheets for oil-resistant gaskets and seals in automotive applications. Falls under 4008.19.80.00 as 'other' cellular vulcanized rubber plates not for floor coverings or celling rubber. Rectangular sheets simply surface-worked (e.g., textured).

Polyurethane Foam Rubber Block

Vulcanized cellular polyurethane rubber blocks of regular rectangular shape for cutting into custom gaskets. HTS 4008.19.80.00 as cellular rubber plates/blocks, uncut or simply cut to rectangular shape per chapter note 8 definition.

CR Foam Neoprene Roll Stock

Chloroprene rubber (CR) cellular foam sheets wound into rolls, simply cut to rectangular sheets for weatherstripping. Classifies 4008.19.80.00 as vulcanized cellular rubber plates, permitting surface-working but not complex shaping.

SBR Sponge Rubber Sheet

Styrene-butadiene rubber (SBR) cellular sponge sheets for vibration damping and sound insulation. HTS 4008.19.80.00 covers such 'other' vulcanized cellular rubber plates not specified elsewhere.