Secure Meters Ltd. Manufactures Quickseal Tamper Evident Security Seal. Secure Meters Ltd. Is an ISO: 27001 and ISO: 14000 certified company. Quickseal Tamper Evident Security Seal are manufactured from Dow Calibre polycarbonate and stainless steel wire. These can endure extreme weather conditions, including long-term exposure to direct sunlight. These are available in two models as XLP and LP. It is applicable for metering installations and fits virtually all sealing applications in a vast range of industries and utilities.