Aluminium Conduit End Cap

OEM / ODM Available Free Sample Available ISO 9001:2015 RoHS REACH

Snap-fit or screw-fixed end caps for aluminium conduit profiles from 40x40 to 80x200 mm, in PA6 or ABS, with blank, single or multi cable entry sized to standard glands.

Wholesale Price $0.12 - $0.95 / pc per pc

Material	PA6 nylon / ABS
Alloy Grade	Not applicable (polymer accessory)
Temper	custom
Section Size	40x40 to 80x200 mm profile sections
Slot	Fits the open end face of conduit profiles
Length	Cap height 8-14 mm depending on section
Tolerance	±0.3 mm on mating dimensions
Surface	Moulded, UV stabilised
MOQ	500
Lead Time	15-25 days after deposit
Loading Port	Shanghai / Ningbo
Supply Ability	300,000 pcs per month
Payment Terms	T/T 30% deposit + 70% before shipment \| L/C at sight
Trade Terms	FOB \| CIF \| EXW
Certifications	ISO 9001:2015 \| RoHS \| REACH

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Profile accessories · Cable management

A conduit end cap closes the open end face of a hollow conduit profile. Its job is not decoration: it stops dust and swarf entering the internal cable channel, it removes the sharp extruded edge from the finished structure, and on the variants with a cable entry it becomes the strain-relief point where a cable leaves the profile and runs to the device.

Caps are supplied for the six conduit sections we hold — 40×40, 40×80, 60×120, 80×80, 80×160 and 80×200 mm — in PA6 nylon or ABS, in black, grey or a colour matched to the profile anodising. Snap-fit is standard; a screw-fixed version is available where the cap has to survive repeated removal or a pull on the cable.

What a conduit end cap actually has to do

Three requirements pull in different directions, and the compromise between them is what separates a cap that lasts from one that falls out in the first week.

The cap has to retain itself against vibration and against the weight of a cable hanging from it. It has to seal well enough to keep out the dust and coolant mist that are normal in a machine shop. And it has to look like part of the structure, because on a workstation or a display frame the profile end is visible at eye level.

A snap-fit cap with two moulded detent ribs satisfies the first two requirements on a clean, dry frame. Where the frame is washed down, or where the cable is pulled, the screw-fixed version is the one to specify.

Profile section	Cap size	Cable entry	Typical use
40 × 40 mm	40 × 40 mm	1 × Ø16 mm or blank	Sensor rails and light-duty cable runs
40 × 80 mm	40 × 80 mm	1–2 × Ø16 mm or blank	Machine frame legs carrying control cable
60 × 120 mm	60 × 120 mm	2 × Ø20 mm or blank	Main uprights with power and signal cable
80 × 80 mm	80 × 80 mm	1 × Ø20 mm or blank	Heavy legs and gantry posts
80 × 160 mm	80 × 160 mm	2–3 × Ø20 mm or blank	Central columns of large machine frames
80 × 200 mm	80 × 200 mm	3 × Ø20 mm or blank	Structural columns with high cable count

The cable entry is the detail that decides the cap

A blank cap is the cheapest and, in many frames, the right answer — the cable exits through a drilled hole in the profile side rather than the end. But where the cable has to leave the frame at the top of a leg, the entry in the cap is what stops the cable chafing on the extruded edge.

We mould the entry with a radiused lip rather than a sharp hole, and the entry can be sized to the cable gland the customer already uses. That matters more than it sounds: a Ø16 mm entry that matches an existing M16 gland removes a separate grommet from the bill of materials.

BlankClosed face. Used where the cable exits through the profile side.

Single entryOne radiused Ø16 or Ø20 mm hole, sized to a standard gland.

Multi entryTwo or three entries for power, signal and earth in one column.

Screw fixedTwo M4 screws through the cap into the profile end taps.

PA6 or ABS: which material belongs on which frame

PA6 nylon is the default. It has enough flexibility for the detent ribs to snap over the extruded edge without cracking, and it resists oils, coolants and most workshop solvents.
ABS is used where a very tight colour match to an anodised profile matters, because it takes pigment more uniformly. It is more brittle than PA6, so the detent is usually a little deeper to compensate.
Both are supplied in a UV-stabilised grade for frames that stand near a window or outdoors, where an unstabilised cap will chalk within a season.

Fitting, and the two mistakes that show up later

Deburr the profile end first A cap pushed onto a burred end sits proud on one side and leaves a visible gap. The cut ends we supply are already deburred, but site-cut members are not.
Seat the cap square Push it in by hand until both detents engage, then check the gap line. A cap seated with a mallet can crack the rib.
Fit the cable before the cap Route and dress the cable with the cap off, then fit the cap over it. Pulling the cable through a fitted cap is the single most common cause of a broken entry lip.
Leave a service loop Where the cap is screw-fixed, leave 50 mm of slack inside the profile so the cap can be removed later without disconnecting the cable.

Practical point: if you are ordering profiles cut to a cut list for an OEM programme, tell us which members are visible and which carry cable. We will bag the caps with the matching members so the kit assembles without sorting.

Frequently asked questions

Will the cap fit a profile from another supplier?

Only if the outside dimensions and the internal wall thickness match. Caps are moulded to the specific section, so a 40×40 cap from one range will not seat on a 40×40 profile with a different wall thickness. Send us the section drawing and we will confirm the fit.

Can the cap be supplied in a colour to match the profile?

Yes. Black and grey are held as standard, and a colour matched to a specific anodising shade is available on moulded parts from around 2,000 pieces.

Is the cap strong enough to take a cable gland?

The screw-fixed version is. A gland tightened into a snap-fit cap can pull the cap off the profile, so where a gland or conduit connector is used we supply the cap with two fixing screws.

Do the caps have to be removed to run cable?

No, but it is much easier. Route and dress the cable with the cap off, then fit the cap over it, rather than pulling the cable through a fitted entry.

What temperature will the caps withstand?

PA6 is rated to about 90 °C continuous and ABS to about 70 °C. Both are well inside the range of a normal machine frame, but a cap next to a heat source should be specified in PA6.

Send the section drawing and we will match the cap

Tell us the conduit section, whether the cable exits through the end, and the gland you use. We will confirm the cap, the entry size and FOB pricing within one working day.

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