Shebag hardware features a core set of craftsmanship characteristics. Its base material is predominantly H62 brass compounded with high‑strength steel in partial sections. After polishing, the back side of the hardware base reveals a bright, distinct natural brass finish. Main structural components adopt H62 brass for its good wear resistance and ductility, making it suitable for hammering and riveting. Stress‑bearing parts such as lock cylinder spindles and stud inner cores are reinforced with high‑hardness steel to address the inherent drawback of plain brass, which tends to deform under prolonged pressure.

Most ordinary replica products on the market adopt zinc alloy. These pieces are lightweight and feature dark, dull back surfaces. By contrast, the back of Shebag’s brass base displays a bright metallic brass luster.

For plating, heavy‑build electroplating with genuine 24K gold is applied to achieve substantial coating thickness. Original Hermès gold hardware uses 18K gold plating, and 24K gold is rarely adopted across the luxury industry. While 24K gold delivers rich, full golden tones, it is inherently soft, more susceptible to scratches from hard objects, and imposes extremely strict requirements on polishing and substrate cleanliness.

It employs a composite stud structure with a steel inner core encased in a brass shell instead of simple hand‑hammered brass nails. Original Birkin bags use solid brass rivets hand‑formed through the Perlage bead‑riveting technique. Their backs show hammered mushroom‑shaped heads with visible indentations from manual striking. Under Shebag’s composite design, the outer brass shell preserves visual appearance, and the embedded steel core boosts compression resistance, so studs resist flattening and denting when the bag bears repeated pressure on the ground.

FFKM perfluoroelastomer gaskets are fitted at hardware spindles and riveting joints, marking the most distinctive feature of this craftsmanship. Originally developed as high‑end sealing material for semiconductors and chemical valves, FFKM resists aging, corrosion from sweat, grease and cosmetics, and maintains its elasticity for decades.

These gaskets serve as buffer isolators between contacting metal surfaces. They eliminate noise generated by direct metal‑to‑metal friction, block human sweat and sebum from penetrating into the brass substrate to mitigate internal hardware oxidation, and absorb vibration during opening and closing to lower the risk of loose rivets.

Genuine Hermès hardware contains no rubber gaskets and relies entirely on precise metal tolerances. Over time, verdigris and metallic squeaking may occur around spindle joints.

This craftsmanship brings multiple practical strengths. The brass substrate secures reliable adhesion for precious‑metal plating, and steel reinforcement compensates for brass’s softness. FFKM gaskets block sweat‑induced corrosion from within, granting theoretically higher hardware durability than the all‑metal original construction. Composite studs further resolve the common failure mode where solid brass studs collapse under long‑term compression.