“爆破片”常见的英文表达是 “rupture disk” 或 “bursting disc”(英式英语中常用 “disc”,美式英语中常用 “disk” ,二者意思基本相同)。
例如:
The rupture disk is designed to burst at a predetermined pressure. (爆破片被设计成在预定压力下破裂。)
A bursting disc is a safety device that protects pressure vessels from overpressure. (爆破片是一种保护压力容器免受超压危害的安全装置。)