Your search for "SFP-25G" revealed the following:

Cisco C9600-LC-48YL C9600 Series 48x 25GB SFP28 Switch Line Card

SKU: NSH-9256
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7280SRA-48C6-R 48x 10G SFP+ 6x 100G QSFP B-F Air Switch

SKU: NSN-4308
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Mellanox MMA2L20-AR 25GB BASE-LR 1310nm Duplex LC SMF 10km SFP28 Transceiver

SKU: NSN-8610
Condition: New
Shipping: Overnight Options
Warranty: 365 days

SuperMicro AOC-S25G-b2S 2x 25GB SFP28 PCIe 3.0 x8 Server Add On Card

SKU: NSB-7244
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Nvidia Mellanox MSN2010-CB2FC 18x 25GB SFP28 4x QSFP28 B-F CL Switch

SKU: NSN-4796
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Mellanox MMA2L20-AR 25GB BASE-LR 1310nm Duplex LC SMF 10km SFP28 Transceiver

SKU: NSB-3100
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Extreme 10522 5m 25GB SFP28 Direct Attach Copper Cable

SKU: NSH-9417
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco C9300-48S-E Catalyst 9300 48x 1GB SFP 1x Expansion Module Slot Switch

SKU: NSN-1272
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Extreme Brocade BR-SLX-9140-48V-AC-F 48x 25GB SFP28 6x QSFP28 F-B Air Switch

SKU: NSN-3852
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco C9300-48S-A Catalyst 9300 48x 1GB SFP 1x Expansion Module Slot Switch

SKU: NSB-6998
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days