Verified status · reviewed 7 October 2026
BIS publishes IS 14643:1999 for unsintered PTFE tape used in thread sealing applications. The official BIS standard record currently classifies certification as voluntary. Buyers should still recheck the current QCO list, importer requirements and customs treatment for the actual shipment.
IS 14643:1999 for PTFE tape used in thread sealing applications.
Voluntary certification in the official standard record reviewed here.
Importer confirms current QCO, customs classification and documents.
Factory quotes the buyer-confirmed product, packing and evidence scope.
What the Official BIS Record Says
The Bureau of Indian Standards lists a product specification specifically for this category. The record should be read precisely: the existence of an Indian Standard is not the same as a current Quality Control Order making certification compulsory.
| Indian Standard | IS 14643:1999 |
|---|---|
| Official title | Unsintered polytetrafluoroethylene (PTFE) tape for thread sealing applications — Specification |
| Review shown by BIS | Reviewed in 2025 |
| Certification classification | Voluntary Certification |
| Product manual | BIS product manual PM/IS 14643/1, April 2025 |
These details come from the official BIS standard record for IS 14643:1999 and the official BIS product manual.
Voluntary Certification Is Not the Same as a QCO
BIS product certification is generally voluntary unless the Central Government makes compliance compulsory for a product through a Quality Control Order or another applicable measure. The current BIS record for IS 14643:1999 says “Voluntary Certification.”
That classification does not prevent a buyer, tender, project owner, marketplace or regulated sales channel from requesting IS 14643 compliance, an ISI-marked product, test evidence or specific label wording. It also should not be treated as a permanent exemption from future QCO changes.
- Check the current BIS record for IS 14643.
- Search the latest BIS compulsory-certification and QCO pages.
- Confirm tender, project and end-customer requirements separately.
- If a supplier claims a BIS licence or ISI mark, verify the licence through official BIS channels.
Checks to Complete Before Ordering
The Indian importer should establish the compliance and customs route before approving packaging or shipping documents. The factory can then prepare the quotation and sample against the buyer-confirmed requirement.
Confirm whether the item is unsintered PTFE thread seal tape and record the finished specification.
Identify wholesale, retail, tender, project or other destination-specific requirements.
Check BIS status, current QCOs and buyer-required standards before artwork approval.
Importer or broker fixes classification, duties and required documents before invoicing.
A supplier should not promise that one document package will clear every transaction. The importer of record and its customs or compliance adviser should confirm the requirement for the exact product, origin, sales channel and shipment date.
Customs Classification, Import Policy and Duties
This page does not assign one universal Indian tariff code or duty rate to every PTFE tape shipment. Classification may depend on the exact product description, construction, presentation and the customs interpretation applied to the transaction.
Before the commercial invoice is finalized, the Indian importer or customs broker should confirm the Customs Tariff Head or ITC (HS) code, import policy, effective duties, country-of-origin treatment and any compulsory compliance requirement. ICEGATE provides an official Trade Guide on Imports for searches by tariff heading or description.
Prepare the Product and Document Brief
Regulatory review and product selection should be kept in the same purchase file. A buyer asking for IS 14643-related evidence should also define the exact finished roll and packing being evaluated.
| Area | Buyer information to confirm |
|---|---|
| Finished tape | Width, stated length, thickness, density or net tape weight, and tape color |
| Product identity | Spool color, SKU name, sample reference and any standard requested by the buyer |
| Finished pack | Individual pack, label, barcode, inner quantity, export carton and carton mark |
| Compliance file | Buyer-required product data, test report, declaration, licence evidence or tender wording |
| Shipping file | Invoice and packing details, consignee data, origin document if required, and broker-confirmed classification |
The importer should provide the final document list. The supplier can prepare agreed commercial and product information, but should not invent certification language or place an ISI mark on artwork without a valid, verifiable basis.
Sample and Quotation Workflow
- Importer confirms the target channel, BIS/QCO position and customs route.
- Buyer sends the finished tape and packing specification.
- Supplier identifies missing fields and prepares a comparable sample or quotation.
- Buyer approves the sample, artwork and required evidence before bulk production.
- Importer or broker reconfirms shipment documents and current import requirements.
For the specification fields, use our PTFE tape quotation checklist. For India-specific market positioning, see the India market page.
Official Sources to Recheck
- BIS standard details: IS 14643:1999
- BIS product manual PM/IS 14643/1
- BIS products under compulsory certification
- BIS Care and licence-verification resources
- ICEGATE Trade Guide on Imports
This page is a buyer-preparation guide, not legal, customs or certification advice. The Indian importer should obtain transaction-specific confirmation from BIS, ICEGATE, its customs broker or an appropriate compliance adviser.
Frequently Asked Questions
Is there an Indian Standard for PTFE thread seal tape?
Yes. BIS lists IS 14643:1999, “Unsintered polytetrafluoroethylene (PTFE) tape for thread sealing applications — Specification.” The BIS record shows the standard was reviewed in 2025.
Is BIS certification compulsory for PTFE thread seal tape in India?
The BIS standard record reviewed on 7 October 2026 classifies certification for IS 14643:1999 as voluntary. Because QCOs and import requirements can change, the Indian importer should recheck the current BIS compulsory-certification pages and transaction requirements before shipment.
Does voluntary certification mean no checks are needed?
No. A buyer, tender, project or regulated sales channel may require a particular standard, test report, licence or label even where BIS certification is not generally compulsory. Confirm the requirement for the actual transaction.
Which HS code and import duty apply to PTFE tape in India?
This page does not assign a universal tariff code or duty rate. The Indian importer or customs broker should classify the exact product and verify current duties, import policy and compulsory compliance requirements through ICEGATE before the invoice is finalized.
What should an Indian buyer send for quotation?
Send the target tape dimensions, density or net tape weight if known, tape and spool colors, packing method, quantity, destination, sample reference and any buyer-required standard or document.
Related Pages
- PTFE tape supply for the India market
- What is PTFE thread seal tape?
- PTFE tape specifications and quotation fields
- PTFE tape temperature range verification guide
- Standard white PTFE thread seal tape
Request an India-Market Quotation
Send the buyer-confirmed specification, packing, quantity, destination and any required standard or document. Unknown compliance fields should be confirmed by the Indian importer before artwork or shipment approval.
Email: fujianteflontape@gmail.com · WhatsApp: +852 6895 4159