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Properties of elastomeric toroidal sealing rings ("O" rings) manufactured from fluorosilicone rubber material released to BS F 154. Specification Ingestion-build-111333 Alarm systems – Alarm transmission

$142.00

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Alarm systems – Alarm transmission systems and equipment - Part 2-1: General requirements for alarm transmission equipment

BS 7882 contains:

BS EN 50121-4:2006 supersedes BS EN 50121-4:2000 which has been withdrawn

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Properties of elastomeric toroidal sealing rings ("O" rings) manufactured from fluorosilicone rubber material released to BS F 154. Specification Ingestion-build-111333 Alarm systems – Alarm transmission

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