---
type: restriction
id: usps-metal-mercury-mercury-thermometers-barometers-blood-pressure-monitors
asset: shipping-restrictions-by-class
title: "Metal mercury (mercury thermometers, barometers, blood pressure monitors) — Postal shipping restrictions by item category"
sources:
  - https://www.ecommercebytes.com/2026/07/05/new-usps-noncompliance-fee-could-take-sellers-by-surprise/
source_quote: "Note the USPS never allows explosives or metal mercury (such as mercury thermometers, mercury barometers, mercury blood pressure monitors) to be mailed."
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Metal mercury (mercury thermometers, barometers, blood pressure monitors)"
carrier: "USPS"
restriction_type: "prohibited"
scope: "all mail"
conditions: "USPS never allows metal mercury to be mailed"
verified: false
unverified_fields: conditions, item_category, scope
---
**Item category:** Metal mercury (mercury thermometers, barometers, blood pressure monitors)

**Carrier:** USPS

**Restriction type:** prohibited

**Scope:** all mail

**Conditions:** USPS never allows metal mercury to be mailed

> Note the USPS never allows explosives or metal mercury (such as mercury thermometers, mercury barometers, mercury blood pressure monitors) to be mailed.

Source: <https://www.ecommercebytes.com/2026/07/05/new-usps-noncompliance-fee-could-take-sellers-by-surprise/>