with lock nut (sealing with PEFLEX profile seal ring), adjustable elbow couplings with lock nut ISO 6149 (sealing with O-ring), adjustable 45° elbow couplings with lock nut ISO 6149 (sealing with O- ring) [...] blanking plugs, tube blanking screws, hexagonal nuts, reinforcing sleeves, sealing rings. Sealing for DKO made of FPM/FKM; sealing for PEFLEX, UN/UNF made of NBR.Nuts, clamping ring, elbows, adjustable elbows [...] ring), adjustable L couplings with lock nut ISO 6149 (sealing with O-ring), adjustable T couplings with lock nut ISO 6149 (sealing with O-ring), straight welding couplings, welding bulkhead couplings, welding