The Types segment classifies vented caps by structural and functional characteristics, influencing manufacturing complexity and cost structure. Standard vented caps—typically injection‑molded with a fixed vent channel—serve high‑volume markets due to their cost efficiency and adequate performance for most liquid products. Adjustable vent caps incorporate a tunable vent aperture, enabling end‑users to modify release rates in response to varying internal pressures, a feature valued in specialty chemical and biotech applications. Integrated safety vent caps combine venting with tamper‑evident mechanisms, meeting regulatory demands in the pharmaceutical and food sectors where product integrity is paramount. Custom engineered caps are fabricated for extreme environments, such as high‑temperature industrial processes, requiring bespoke materials and vent geometries. Each type contributes proportionally to market revenue based on adoption rates across applications, with standard caps capturing the largest share, while adjustable, safety, and custom variants occupy progressively smaller, yet strategically significant, niches within the overall Vented Cap market.