Sourcing ceramic metering plungers from China
Ceramic metering-pump plungers from China under heading 6909 normally carry 4% UK duty; the listed 0% suspensions describe other products. Confirm material and hardness before choosing the code. For workplace supply, provide safe-use information and the necessary testing or examination. Cambridge China Bridge sources ceramic metering-pump plungers.
UK duty on ceramic metering-pump plungers
Read from the UK Trade Tariff on 1 October 2026, heading 6909 covers laboratory, chemical and other technical ceramic wares, alongside agricultural receptacles and containers for conveying or packing goods. This guide concerns ceramic metering-pump plungers supplied as technical ceramic parts. Confirm the commodity code against the material, hardness and supplied construction. The table repeats the residual technical-ceramics code for different material families.
The supplied tariff snapshot records 4% base duty for goods from China and no anti-dumping or countervailing measures. Its 0% suspensions describe specified balls, rollers, catalyst supports and other listed articles, rather than metering-pump plungers. The suspension within the residual technical-ceramics line concerns specified ceramic-carbon cartridges. Do not apply it to a plunger merely because the code matches. See the wider technical and laboratory ceramics guide.
The tariff attaches an import waste control. Waste shipment controls apply only if the material is waste. For goods from China, ask your customs broker to confirm the applicable requirement if a shipment contains discarded or scrap parts. The snapshot also lists waste export and cultural-object export controls; confirm their applicability before any re-export.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Porcelain or china technical wares, where applicable to the plunger | 6909 11 00 00 | 4% | None |
| Technical ceramic plungers with Mohs hardness of 9 or more | 6909 12 00 00 | 4% | None |
| Other technical ceramic plungers, including qualifying zirconia parts | 6909 19 00 90 | 4% | None |
Specify the sealing surface and pump interface
Provide a controlled drawing showing sealing diameter, roundness, straightness, surface finish, overall length, end geometry and attachment details. Name the ceramic grade and require batch evidence for composition, density and hardness. Specify whether the supply is a solid ceramic plunger or an assembly with a metal stem, and identify the mating seal and pump model.
Describe the pumped liquid, operating pressure, temperature, stroke and cleaning chemicals. Agree a trial in the intended pump, including leakage, delivered-volume consistency and seal wear. For workplace supply, HSE guidance includes safe-use information and instructions, plus testing or examination necessary to ensure compliance. For food-contact applications, arrange a separate application review through testing and certification.
Worked duty example
Illustrative example, not a quote: Illustrative order of 1,000 ceramic metering-pump plungers meeting this hardness classification under 6909 12 00 00, invoiced at £16,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £17,500. Duty at 4% is £700. Import VAT at 20% is charged on the customs value plus duty, £18,200, so it is £3,640. Import taxes total £4,340; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £700 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Material: match batch identification and composition, density and hardness results to the approved grade.
Geometry: measure sealing diameter, roundness, straightness and attachment features against the drawing; record surface-finish results.
Surface and function: inspect for cracks, chips and grinding damage, then trial sampled plungers with the intended seal and liquid.
Arrival and packing: check individual separation, cushioning and batch labels; quarantine damaged pieces before installation. Use the quality inspection guide to agree inspection records.
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What goes wrong
A plunger can match the nominal diameter yet leak or damage seals because it is out of round, tapered or poorly finished. Chipped edges can cut a seal during installation. Material substitutions can change wear and chemical resistance, while hidden cracks can cause breakage under load.
Keep the approved drawing, material evidence and pump-trial results together. Ask the factory to report changes to ceramic grade, grinding, polishing or stem attachment before production. Separate transit damage from dimensional defects when investigating an arrival complaint.
Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For own-brand ranges, see sourcing for brands.
Frequently asked questions
What is the UK import duty on ceramic metering-pump plungers from China?
The supplied tariff snapshot records 4% base duty under heading 6909, with no anti-dumping or countervailing measures. Its listed suspensions describe other products, so confirm the precise plunger classification.
Which commodity code applies to a ceramic pump plunger?
Check material and hardness. The technical-ceramics lines distinguish porcelain or china, articles with Mohs hardness of 9 or more, and other technical wares. An assembled plunger needs its supplied construction reviewed.
What should I measure on arrival?
Check sealing diameter, roundness, straightness, surface finish and attachment features. Inspect for chips and cracks, match batch evidence, and trial samples with the intended seal.
Can a ceramic plunger replace my existing pump part?
Confirm the complete drawing, ceramic grade, seal pairing, attachment and operating conditions. Approve a pump trial for leakage, delivered-volume consistency and seal wear before accepting the replacement.