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Updated September 17, 2026

What is the HTS code for a plastic washer?

HTS code

3926.90.4590

CBP classified a PTFE plastic washer used in making aviation headsets under HTS 3926.90.4590 in ruling N356063. That line, within the heading for other articles of plastics, covers gaskets, washers and other seals.

  • Made in Philippines
  • CBP ruling N356063
  • December 5, 2025
  • Current
Today's duty from Philippines

The Product

  • A washer made of polytetrafluoroethylene (PTFE) plastic.
  • Used in the production of aviation headsets.
  • Oval in shape with one flat edge, 34.8 millimeters high, 26.29 millimeters long and 1.27 millimeters wide.

CBP's Ruling

ItemHTS codeCBP's description of the line
Washer, Boom (PTFE plastic washer)HTS 3926.90.4590[o]ther articles of plastics and articles of other materials of headings 3901 to 3914: [o]ther: [g]askets, washers and other seals: [o]ther

Explanation

Heading 3926 names other articles of plastics. CBP placed the goods on that heading's line for gaskets, washers and other seals. The article is a washer made of PTFE plastic.

Does this apply to your product?

It likely does if you can answer yes to each of these:

  • Is it a washer?
  • Is it made of plastic, such as PTFE?

A no to any of them can mean a different code. A licensed broker can classify your product.

The code today

HTS codeIn today's scheduleWhere it sitsToday's duty
3926.90.4590✓ Still in the scheduleHeading 3926 › Gaskets, washers and other sealsToday's duty from Philippines 

Checked against today's tariff schedule. The duty calculator opens with the code and country filled in.

Related rulings

N325322 classified a plastic washer on the same line, and N325536 a plastic gasket. The rest cover other plastic articles: a plastic hinge (N356790), plastic heat shrink (N356779), a plastic zip tie (N359069), a plastic bushing (N345770), a plastic pipette (N328944) and a plastic wheel (N332780).

  • N325322April 29, 2022Plastic washer from Taiwan3926.90.4590
  • N356790December 17, 2025Plastic hinge from the Philippines3926.90.9989
  • N356779December 17, 2025Plastic heat shrink from the Philippines3926.90.9989
  • N359069March 17, 2026Plastic zip tie from the Philippines3926.90.9989
  • N328944November 8, 2022Plastic pipette from China3926.90.9985
  • N332780May 19, 2023Plastic wheel from China3926.90.9985
  • N345770February 20, 2025Plastic bushing from Vietnam3926.90.9989
  • N325536May 5, 2022Plastic gasket from China3926.90.4590
Read CBP's full ruling N356063 The letter as CBP published it, on rulings.cbp.gov

Borderless, a licensed U.S. customs brokerage, summarized CBP ruling N356063 in plain English and checked its codes against the letter and today's tariff schedule. A ruling applies only to goods that match its facts; our terms explain the rest. Terms