---
title: "Crimp cap: research glossary | Sable Peptides"
description: "A crimp cap is an aluminium seal crimped over a vial's rubber stopper to hold it securely and provide an airtight closure. Crimp-sealed vials protect lyoph"
canonical: https://www.sablepeptides.co.uk/glossary/crimp-cap
publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Crimp cap

A crimp cap is an aluminium seal crimped over a vial's rubber stopper to hold it securely and provide an airtight closure. Crimp-sealed vials protect lyophilised peptides from moisture and air ingress during storage and shipping. A flip-off plastic top often covers the stopper until first use.

Source: [en.wikipedia.org](https://en.wikipedia.org/wiki/Vial)

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All Sable Peptides products are supplied for laboratory research use only. Not for consumption.