You may also need Compression Fittings Straight couplers, elbows, tees, olives & more — packs from 1 to 100. Browse Compression Fittings → …or 10mm Copper Oil Line Copper tube in different lengths for oil tanks & boilers. Shop 10mm Oil Line → Overview The 10mm Brass Insert (Copper Pipe Liner) is designed to reinforce 10mm copper tube inside compression joints, helping prevent the pipe from deforming as the nut and olive tighten. Ideal for maintenance, replacements and new installs where you want a secure, consistent joint – without soldering or hot works. Key Features Brass tube liner / pipe insert for standard 10mm copper pipe Supports the pipe wall to reduce distortion during tightening Helps compression fittings achieve a more reliable seal Perfect for repairs when re-making compression joints Quick, heat-free installation – no soldering required Sizes & Pack Options Pack options: x1, x2, x5, x10, x25, x50, x100 Applications Kitchen, bathroom and utility pipework in 10mm copper Repairs and retrofits where hot works aren’t permitted Installation Tips Cut pipe square and deburr inside/outside; ensure the tube is round Push the insert fully into the pipe end so it sits snug and straight Fit the nut and olive, seat the pipe fully into the fitting body Tighten by hand, then nip up with spanners—avoid overtightening On sealed heating systems, re-check and re-nip after the first heat cycle Note Listing is for the brass insert/liner only — tools, pipe and fittings shown in context are not included.
