Certificate of Conformance, Cure Date & Lot Traceability

When an O-Ring goes into regulated work, the part is only half the deliverable. The other half is the paperwork that proves what you received. The O-Ring Store provides this documentation on request with an order, under its ISO 9001:2015 quality management system.

Certificate of Conformance (CoC)

A Certificate of Conformance is a document certifying that the supplied O-Rings conform to the purchase order and the applicable specification. It is the paperwork an auditor or a QA department needs on file. When your process requires evidence that a part matches what was ordered, the CoC is the record that closes the loop.

Cure date

Elastomer age is tracked from the date the rubber was cured, or vulcanized. Per SAE ARP5316, which superseded MIL-STD-1523, the cure date is expressed as a quarter and year, for example 2Q26 meaning the second quarter of 2026. The cure date is used to manage shelf life, not to mark an expiration of usefulness on the shelf. It tells you how the material has been aged and stored so you can apply your own shelf-life rules.

Lot traceability

Each lot is traceable back to its compound, cure lot, and production batch, so any delivered part can be traced to its origin. This is essential in aerospace, medical, and other regulated work, where a single lot number has to connect a finished part to the material and batch it came from.

Backed by ISO 9001:2015

The O-Ring Store operates an ISO 9001:2015 certified quality management system. That system is what makes consistent Certificate of Conformance, cure-date, and lot-traceability documentation possible, order after order, rather than something assembled by hand each time.

Need a Certificate of Conformance, cure date, or lot traceability with your O-Rings? Contact us with your order and we will supply the documentation your process requires.