Materials Guide: Caps & Plugs for Hydraulic & Pneumatic Applications
The importance of material selection in hydraulic and pneumatic applications
Selecting the right caps and plugs for hydraulic and pneumatic applications is critical to preventing contamination, protecting threads, and maintaining reliable system performance. Different materials — including LDPE, HDPE, TPE, EPDM and silicone — offer varying levels of chemical resistance, temperature tolerance, pressure capability and durability, making material choice a key factor in overall system integrity.
Applying material performance in real‑world applications
It also outlines the role caps and plugs play across the component lifecycle, supported by a materials matrix and comparative chemical resistance data. Additional guidance on key selection factors and design considerations helps ensure informed, consistent decision‑making across hydraulic and pneumatic systems.
This guide explains how these materials perform in real‑world conditions, helping engineers, manufacturers and maintenance teams choose the most suitable option for specific requirements such as assembly, transport, masking and long‑term protection. It provides practical insight into how performance characteristics align with application demands.
