The Guillemin coupling plug is a sealing accessory for Guillemin hydraulic and pneumatic couplings, used to protect ports during idle periods or maintenance. It fits DN 20‑100 sizes and is offered in aluminium, brass, stainless steel and polypropylene, matching the material of the corresponding coupling. Designed to meet ISO thread standards (TH‑01T series), the plug ensures a leak‑free closure and easy manual handling. Ideal for mobile equipment, industrial plants and OEM assemblies, the plug is stocked for immediate delivery. Contact Cohimar for pricing and technical data.