The Wayland Industries 3" John Perry End Cap is a specialized professional-grade component for high-purity fluid distribution systems. Constructed from T316L Stainless Steel, it offers superior corrosion resistance compared to T304, making it ideal for high-acid beverages and harsh caustic cleaning cycles. The John Perry style fitting provides a secure, flat-faced sanitary connection. This end cap is used to seal off unused ports in manifolds, ensuring a glass-smooth internal path that prevents bacterial harbor points.