GB/T 12385-2025 Active National standards

GB/T 12385-2025 Standard test methods for sealability of gaskets for pipe flanges

Publish Date: 2025-03-28 Implement Date: 2025-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 12385-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Piping accessories

ICS Name: Flanges, pipe joints, and connectors

Publish Date: 2025-03-28

Implement Date: 2025-10-01

Pages: 10 pages

Scope

This document describes three methods for determining the sealing performance of gasket seals used in pipe flanges: the leak detection cavity pressurization method (Method A), the pressure drop method (Method B), and the helium mass spectrometry vacuum leak detection method (Method C).
This document is applicable to the sealing performance determination of non-metallic flat gaskets, wrapped gaskets, PTFE-coated gaskets, metal-coated gaskets, flexible graphite composite reinforced gaskets, metal toothed composite gaskets, and metal wave-toothed composite gaskets. For other types of gaskets, please refer to the relevant standards for implementation.