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M-LAB

Pack of 4 · 8–15 mm · Engineered in the USA

Camp chair end caps

One part, eight sizes. Pick the inside diameter of your chair tube and we will send four caps that press in and stay in.

Select

Pick your size

8–13 mm fits most camp chairs

Measured outside 8–15 mm? Ask us for that size — we make them to order.

Selected

10 mm

tube inside diameter

Specifications for the 10 mm end cap
Pole inside Ø10 mm
Cap head Ø14 mm
Length27.5 mm
Pack quantity4
SKUMLAB-EC-10MM-4PK
GTIN-12860016549920

Not every tube on a chair is the same size. Measure each one you are replacing.

Not sure of your size? Find your size or print the measuring guide.

Your measurement will not be exact

Tube sizes vary between makes, and a tube that has been in use is usually a little out of round. In our testing a reading almost never matches a size exactly.

Round down to the nearest size we make. A measured 11.70 mm takes the 11 mm cap. A little under is fine — the head is 4 mm wider than the bore, so it still seats on the tube end, and the bungee holds the cap in. Go too far under and the head pulls straight through instead of seating.

The part

What you get

Four black M-LAB camp chair end caps with domed heads, M-LAB embossed on the side of each body
An 11 mm M-LAB pack: a printed topper folded over the top of a clear bag holding four black end caps, the topper showing the size, PACK OF 4 and an actual-size millimetre ruler reading "lay your old cap on the ruler, measure the body, not the head"
The pack as it ships. The caps are visible through the bag, which is why the topper needs no printed circle.
Back of an 11 mm M-LAB pack: the topper reads Engineered in the USA and Fits pole inside dia. 11 mm, with Scan for sizing help above a QR code, mlabedh.com/fit below it, and a barcode to the right, over a clear bag of four caps
The back carries the fit spec, the sizing QR and the retail barcode.

In the pack

  • Four caps, all the same size, in a better performing material
  • Every cap is 27.5 mm long
  • Head diameter is 4 mm over the tube bore, so it seats on the tube end
  • Topper printed with an actual-size ruler, so you can re-check your size against the caps in the bag
  • Engineered in the USA
How to use the M-LAB pack to check your size: the front of the pack prints the size large and carries a 25 mm ruler at true scale, the back has a QR code to the sizing guide and the retail barcode.

How it works

Why it stays in

The body matches the tube bore for a press fit, the head stops against the tube end and takes the cord load, and the cord anchors inside the cap.

How the M-LAB end cap worksCutaway of a chair tube with the end cap pressed in and the shock cord anchored in the cap. Head diameter is size plus 4 mm; the body matches the tube's inside diameter; caps are 27.5 mm long. How the end cap worksCutaway view, 10 mm cap shown.27.5Head Ø = size + 4 mmStops against the tube end and takes the cord load.Body Ø = pole inside ØMatches the bore; the cord holds the cap in.Cord anchorThe shock cord is tied off inside the cap.Tube wallYour chair’s tube. Measure its inside diameter.Schematic. Internal cord path simplified.

Install

Four steps, no tools

How to install M-LAB end capsFour steps: pull out the old cap, thread the shock cord through the new cap, tie a stopper knot, then pull the cord taut and press the cap into the tube. Install in about a minuteNo tools needed. Pliers help if the old cap is stuck.1Pull out the old capKeep hold of the shock cord.2Thread the cord throughFeed it in from the body end.3Tie a stopper knotSeat the knot inside the head.4Press the new cap inPull the cord taut; push until seated.

Step 3 asks for a stopper knot — here is how to tie a figure-8.

Sizes

All 8 sizes

SizePole IDHead Ø088.012099.0131010.0141111.0151212.0161313.0171414.0181515.019

All dimensions in mm · Every cap is 27.5 mm long · Pack of 4 · Between two sizes, choose the smaller — the bungee is what holds the cap in.

Not sure of your size?

Print the free guide and stand your old cap on the actual-size outlines, or measure straight across the inside of the tube.

First page of the printable pole size gauge, showing the scale-check box, circle gauges and ruler

PDF · 2 pages · US Letter · free, no signup

All three measuring methods →

Back in service

Four caps, and the chair is usable again

A person sitting in a low packable camp chair at the edge of a lake at dusk, holding a mug, seen from behind