A contact tip matches its wire exactly: the tip bore equals the wire size, 0.8mm wire through a 0.8mm tip, and the torch pattern names the family, with MB15 tips here in 0.8 and 1.0mm packs of five among 122 lines from the Sealey, SIP and Draper ranges, and the thread, M6 on the light torch families, stated on each listing. A worn tip announces itself in spatter and a wandering arc, which is why tips sell in packs.
Around the tip sits the gas hardware: ceramic shrouds, the No.6 pack of five among them, direct the shield onto the weld, and a damaged shroud shows up as porous, dirty welds long before it looks broken. Diffusers spread the gas behind the shroud, and the nozzle cleaner sits on the same shelf, the small tool that keeps the whole gas end alive between replacements.
The flame side picks by number. Swaged heavy duty oxy acetylene welding nozzles run No.2 through No.10, the number rising with the thickness of the metal being welded, and cutting nozzles split by gas: acetylene types in 1/32, 3/64 and 1/16 inch seats, propane types in the same seats for propane rigs, so the gas in the hose chooses the nozzle family before the size does.
Plasma cutters take machine matched consumables: nozzles and ceramic shrouds are listed against their cutter, the 03357, 03358, 70058 and 70066 among the machines served, in packs of three and five, with the matching electrodes one shelf over so a cutter can be reconsumabled in one pass. A photo of the old part over WhatsApp on 07754288583 settles anything unmarked.
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