Certificates, approvals and traceability: what a serious seal buyer asks for

Certificate types (3.1, CoC), batch records, RoHS and REACH statements, quality systems and change control, and how to give buyers the paper trail they expect.

Beginner2 min readArticleUpdated 2026-10-24All elastomersPTFE
Cover image: "Certificates, approvals and traceability: what a serious seal buyer asks for", with a document with a check mark.

Certificates

Document Content
Certificate of conformity (CoC) The supplier states the product meets the order
Material certificate, EN 10204 type 2.1, 2.2 Declaration and non-specific test
Inspection certificate 3.1 Specific test results, signed by an authorised representative independent of production
Inspection certificate 3.2 As 3.1 plus validation by an independent third party
Batch test report Rheometer, hardness, density, tensile, compression set values for the lot
Cure date and lot Needed for shelf life

Statements often requested

  • REACH and SVHC declaration.
  • RoHS compliance.
  • Conflict minerals statements.
  • Food and pharma declarations (see approvals article).
  • TSE/BSE statement for animal-derived ingredients.
  • PFAS declaration.

Quality systems

ISO 9001 as baseline. IATF 16949 for automotive, AS9100 for aerospace, ISO 13485 for medical, ISO 14001 and 45001 for environment and safety. Oil and gas customers audit against NORSOK M-650 or API Q1.

Traceability expectations

  1. Raw material lots to compound batch.
  2. Compound batch to cure lot and part lot.
  3. Part lot to customer shipment.
  4. Retention samples of each batch for several years.
  5. Recall capability within hours.

Change control

Customers do not accept silent changes of formula, supplier, process or site. A formal change notification and, where required, re-approval protects both sides.

How Pascalor shows it

Every lot has a passport on the Track page with batch data and test results. Datasheets show typical values and release limits. Certificates are delivered by email and stored in the portal, so a record exists for each shipment.

About this article. It is original writing prepared from public sources, standards and general industry practice. It is not a copy of any book or standard and it is not engineering advice. Confirm values against the current edition of the standard and test in your own application. Only analyse material you own or are entitled to analyse.

Stuck on a sealing problem?

Send the drawing, fluid, temperature and what failed. We reply by email with the likely cause and the next test.