Sealed conduit T-piece — polyamide 66, IP67 rated, removable inspection hatch for cable routing

Elevate Automotive

Conduit T-Piece — IP67 Sealed Branch Fitting

CTP10

Sealed conduit T-piece for branching wiring looms. Polyamide 66 body, IP67 sealed with a removable inspection hatch, compatible with reducing kits for smaller conduit sizes.

IP ratingIP67

Temp range−40°C to +150°C

MaterialPA66 nylon

$35.00

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Universal fitmentSealed T-branch for wiring looms in automotive, marine, RV, trailer and industrial installs.

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A sealed T-piece that branches a wiring loom off the main run without cutting into the conduit. Anti-vibration rings clamp both legs and the branch, and the removable inspection hatch lets cables route through, then seals down to IP67. Fits engine-bay looms, chassis rails, wheel-well runs, trailer wiring and marine harness branches.

Moulded from polyamide 66 (nylon 66). Chemical-resistant against fuels, oils and coolants, service temperature −40°C to +150°C, and won't chalk under UV. Fits both slit and unslit conduit, keeps the full conduit bore through the fitting, and takes a reducing kit when the branch leg is smaller than the main run.

Match the T-piece bore to the outside diameter of the main-run conduit. For a fully sealed junction, use non-split conduit; split loom fits physically but leaves the slit un-sealed. It replaces the split-loom-and-tape T-off that fails the moment water or vibration touches it.

Sealed T-piece size guide

Pick the size that matches the outside diameter of your main-run conduit. If the branch leg needs to step down, add a reducing kit to that leg.

Bore	SKU	Typical use
10mm	CTP10	Trigger wires, sensor loops, small signal runs
12mm	CTP12	General accessory looms, driving-light wiring
16mm	CTP16	Main body looms, multi-strand branch runs
20mm	CTPB20	Heavy battery-side runs, thick multi-cable branches

Split vs non-split conduit

This T-piece fits both. Non-split conduit (solid tube) is the sealed option. Cables thread through end-to-end before joining, and once fitted the assembly stays IP67. Split conduit (loom tube) has a slit down its length so it wraps around cables mid-run without disconnecting anything, but the slit means it never truly seals. For a T-branch, non-split is the cleaner match. Split loom works on repairs where the harness can't be dismantled, but expect some ingress at the split.

Main-run conduit this T-piece joins to

Match the bore size to your run:

Conduit Black - Non-Split

$3.00

Split Loom Tube

$3.00

IP67 sealed — dust-tight, submersion-rated seal
PA66 body — chemical, heat and UV resistant
Anti-vibration rings — grip the conduit under movement
Removable hatch — service the branch without cutting
Reducing-kit ready — step the branch leg down a size
Loom-safe — fits both slit and unslit conduit

Material & rating

Body: Polyamide 66 (nylon)

Ingress protection: IP67

Compliance: RoHS 2011/65/EU

Temperature

Service range: −40°C to +150°C

UV resistance: Very high

Fitment

Bore sizes: 10 / 12 / 16 / 20mm

Conduit type: Slit or unslit

Reducing kits: Compatible

Sealed T-branch for wiring looms in automotive, marine, RV, trailer and industrial installs.

Branching a main-run conduit into a secondary leg with a full IP67 seal

Works with both slit and unslit conduit (best seal on unslit)

Stepping conduit sizes down at the branch with a reducing kit

Not for non-corrugated smooth-wall conduit or rigid pipe fittings

Not a substitute for a proper junction box on mains AC wiring

Q: What is a sealed T-piece actually for?
Branching a wiring loom off the main run without cutting into the conduit. Feed the main run into two legs, feed the branch cables through the removable inspection hatch, close the hatch, and the result is a sealed IP67 junction instead of an exposed splice point. Replaces the old split-the-loom-and-tape-it-up approach that fails as soon as water or vibration finds it.

Q: What size do I need?
Match the T-piece bore to the outside diameter of your main-run conduit. 12mm main run picks CTP12. Sizes are 10mm, 12mm, 16mm and 20mm. If the branch leg steps down to smaller conduit, add a reducing kit to that leg. The T-piece body stays the main-run size.

Q: Split loom or non-split conduit, which does this fit?
Both. Non-split conduit gives the sealed IP67 result the fitting is designed for. Clamps around solid conduit and the branch seals to the hatch. Split loom will physically fit too, but the slit down its length means the joint is not fully sealed. Use non-split where sealing matters (engine bay, chassis rail, wheel-well); split loom where an existing loom needs to be patched without dismantling.

Q: What is polyamide 66 and why does it matter?
Polyamide 66 is a nylon plastic OEMs use across underhood connector housings and conduit fittings. Handles −40°C to +150°C, resists fuels, oils, coolants and most solvents, holds up under UV without chalking or going brittle. Cheaper plastics soften with heat or crack in cold. When a fitting spec sheet says PA66, that is what the material rating is paying for.

Q: What does IP67 mean here?
Dust-tight (the 6) and rated to survive temporary submersion up to 1 metre for 30 minutes (the 7). Practical read: dust from a corrugation, rain, a puddle strike, an engine wash are all fine. Not rated for continuous submersion or high-pressure water blast (that is IP68 or IP69K).

Q: What are the anti-vibration rings?
Internal rings that grip the conduit outer wall when the T-piece is clamped down. They stop the conduit walking out of the fitting under vibration, which is the failure mode of unclamped fittings on 4WD engine bays and trailer looms. Moulded into the fitting body, not fitted separately.

Q: What is a reducing kit and when do I need one?
A stepped insert that lets one leg of the T-piece accept a smaller conduit than the fitting is designed for. For example, a 12mm main line into a T-piece with a 10mm branch leg. Use one when the branch cable is much thinner than the main loom and the conduit size should step down at the junction instead of running oversized conduit on the branch. Reducing kits are sold separately.

Q: Can I open the inspection hatch later?
Yes, that is what the removable hatch is for. Pop it, add or replace a branch cable, refit and re-seal. Refitting properly (hatch flush, retention lugs engaged) is what keeps the IP67 rating. Leave the hatch open or half-clipped and the seal is lost.

Q: Why pick a sealed T-piece over just splitting the loom and taping it?
Tape and split-loom T-offs fail. Tape backs off in heat, split-loom flexes open under vibration, any water in the join wicks along the cables. The sealed T-piece gives a fixed physical junction with a proper seal, and the removable hatch means the branch can be serviced without dismantling the loom. On engine bay, chassis rail, wheel-well and trailer runs, anywhere it gets wet, hot or moves, a sealed fitting is the difference between a five-year loom and a two-year one.

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