... Optic Adapter Manufacturer Carefiber offers Fiber Optic Adapters, in PC, UPC, APC, SM and MM Types, Low Insertion Loss, Zirconia Sleeve. 1 ... sleeve. High Reliability and Stability. FC, LC, SC, ST, MU, MTRJ, E2000, DIN, D4, MPO, bare optical fiber adapter, hybrid optical fiber adapter ...