A clip closes around the outside of the hose once the hose is already on its fitting. That outside diameter is the clip size — the bore the hose runs on is not.
2
Or work it out from the hose's own figures
If the hose is not to hand, take its internal diameter and add twice the wall thickness — both are listed in that hose's own Size Guide. A 19 mm bore silicone hose has a 4.5 mm wall, so it measures 28 mm across the outside.
3
Use vernier calipers, keep the largest reading
Set the outer jaws across the widest point of the assembled joint and rotate 60° between readings. Hose is soft and rarely perfectly round, so size to the biggest figure.
4
Pick the range that spans your figure
Aim for the middle of a clip's range rather than either end. Wound out near its limit a clip has little thread left to bite on; at the bottom of its range it may not open far enough to pass over the hose in the first place.
Size the clip to the hose OD, not the bore. A 19 mm hose does not take a 19 mm clip — with a 4.5 mm wall it measures about 28 mm across the outside. Every figure on this page is the outside diameter the clip closes on.
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Auto Silicone Hoses
Assorted Mini Hose Clips
11 Sizes9mm Band Width2, 5 or 10 Of Each
Product gallery
Frequently Asked Questions.
Answers to the questions we’re asked most about sizing, fitment and performance.
A spread of sizes across a single clip type in one box, so the right clip is on the shelf rather than being a trip to the merchant. Available in 2 of each - 22 clips, 5 of each - 55 clips and 10 of each - 110 clips.
Why buy assorted rather than single sizes?
Because you rarely know in advance which size the next job needs. For a workshop, farm or van, having the range on hand is worth considerably more than the price difference.
Are they good value?
Per clip, substantially cheaper than buying the same clips as singles, and the larger boxes are better value again. Singles only make more sense when you know exactly which size you need and will never need the others.
W1 or W4?
Available in W1 Zinc Plated and W4 Stainless Steel. W1 is zinc-plated steel - cheaper, fine for dry indoor use. W4 is stainless throughout, band, housing and screw, which is what you want for weather, coolant, road salt or a marine environment.
What sizes does the box cover?
The full stocked size range for this clip type is included in the box.
How do I choose the right clip from the box?
Size to the outside diameter of the hose once fitted over the pipe, not the bore, and aim for the middle of the clip's adjustment range rather than either extreme. A clip at the end of its travel has almost no thread engaged.
Choosing a selection results in a full page refresh.
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David from Northallerton
A great product
Not only for the reducer but for all the different Items I bought.
If you are looking for any form of hose, I would certainly suggest giving Auto Silicone Hoses a call or even better go to their warehouse. I was looking for 2 flexible hoses, a reducer and clips in order to replace the exhaust on my boat which uses raw water to cool the engine and exits via the exhaust. The staff member was very helpful measuring the pipes I took with me. Best of all was I got everything I needed and was pleasantly surprised with the price. Would certainly recommend.
Straight Reducing Silicone Hose
Richard Rose
Absolutely perfect
Absolutely perfect. I bought it to attach to my cyclone dust extractor so that I can ‘plug and play’ my workshop vacuum. Works a treat.
90 Degree Reducing Silicone Elbow Hose
D P S
Very good fit
Fitted these a couple of weeks ago and they were a good fit. Quality looks good. Purchased the stainless hose clip kit at the same time and was glad I did as some of my original ones were a bit seized. The new hoses went on well with no leaks right from the start
Very pleased