The Tweco 1450-1125 (45-5\/64-25) MIG Conduit Liner<\/strong> is an essential component for welders operating heavy-duty MIG guns over long distances. Designed specifically for 1\/16″ to 5\/64″ (1.6mm – 2.0mm)<\/strong> welding wires, this liner ensures that your filler metal feeds smoothly from the feeder to the contact tip, minimizing downtime caused by feed issues.<\/p>\n With a generous 25-foot length<\/strong>, this liner is perfect for extended cable assemblies often found in shipyards, structural steel fabrication, and large-scale manufacturing. It is part of the industry-standard Tweco 45 Series<\/strong>, making it a direct replacement for liners in Tweco No. 4, No. 5, and No. 6 MIG guns, as well as Spray Master 450 and 600 series models.<\/p>\n Manufactured from zinc-plated spring steel, the conduit offers excellent flexibility while maintaining the rigidity needed to prevent kinking. A smooth internal surface reduces friction, which is critical when pushing heavy wires over 25 feet. Whether you are running flux-cored or solid steel wire, replacing your liner regularly with genuine Tweco parts helps maintain arc stability and weld quality.<\/p>\n Using authentic Tweco consumables ensures precise fitment and optimal performance. Worn liners are a leading cause of erratic arcs and birdnesting. By installing the 1450-1125 liner, you restore your MIG gun’s performance, ensuring consistent wire delivery for high-quality welds.<\/p>\n","protected":false},"excerpt":{"rendered":"Reliable Wire Feeding for Heavy Fabrication The Tweco 1450-1125 (45-5\/64-25) MIG Conduit Liner is an essential component for welders operating heavy-duty MIG guns over long distances. Designed specifically for 1\/16″ to 5\/64″ (1.6mm – 2.0mm) welding wires, this liner ensures that your filler metal feeds smoothly from the feeder to the contact tip, minimizing downtime… View Article<\/a>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[2042,2044],"product_tag":[],"class_list":{"0":"post-1782733","1":"product","2":"type-product","3":"status-publish","5":"product_cat-mig-accessories","6":"product_cat-mig-consumables","7":"pa_brand-tweco","8":"pa_item-liner","9":"pa_length-25-ft","10":"pa_material-zinc-plated-spring-steel","11":"pa_packaging-description-pack-of-1","12":"pa_wire-size-1-16","13":"pa_wire-size-5-64","15":"first","16":"onbackorder","17":"taxable","18":"shipping-taxable","19":"purchasable","20":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product\/1782733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/media?parent=1782733"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product_brand?post=1782733"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product_cat?post=1782733"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/josefgases.com\/stage\/wp-json\/wp\/v2\/product_tag?post=1782733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Why Choose Genuine Tweco Liners?<\/h3>\n