The Walraven 37GP8H Pacifyre MKII Fire Collar (M) 186-188mm is engineered for robust fire-resistant sealing of plastic pipes (PVC, PE, PP, ABS, SAN+PVC) and composite pipes. Designed for installation in both walls and floors, this fire collar provides exceptional fire resistance, rated up to EI 240 (240 minutes). Its durable steel housing and advanced intumescent material ensure reliable protection by expanding rapidly in the event of a fire, effectively sealing pipe penetrations. This specific model accommodates pipe diameters ranging from 186mm to 188mm, making it an essential component for maintaining fire compartmentation in building structures.