Manway Seals by Diameter NZ - Tank Gaskets by Size | HD Process

This page groups hygienic manway seals by diameter to help you quickly identify the correct replacement size for your tank or vessel. Sorting by diameter is often the fastest way to narrow down options before confirming seal profile, material and compatibility with your specific manway design.

HD Process can assist in confirming fitment across common manway types, including inward and outward opening lids and pressure manways. Final selection should consider both diameter and cross-section profile, along with material compatibility for your process conditions.

• Manway seals grouped by measured mid-range diameter
• Available in common food-grade elastomers such as EPDM and silicone
• Supports quick identification of replacement seal size

• Standard diameters to suit common manway sizes
• Material selection based on temperature and chemical exposure
• Cross-section/profile matching to OEM manway design
• Support for confirming size from drawings or photos

Select your required diameter or contact HD Process to confirm the correct seal size and material for your application.