A straight heat shrink boot seals a connector backshell with the harness exiting inline with the connector axis — the most common transition in a motorsport loom. The moulded body recovers down over the backshell to form an environmental seal and strain relief at the most vulnerable point in the harness.
XTRA Motorsport stocks straight moulded boots from Raychem (TE Connectivity) across the 202A, 204W and 202K series and the HellermannTyton equivalents, in both lipped (retained against the backshell groove) and non-lipped forms, covering Souriau 8STA and Deutsch AS/ASL/ASU shells 03–24. Each is moulded from fluid-resistant elastomer rated −75 °C to +150 °C and recovers with a calibrated heat gun. As an official Bosch Motorsport dealer with 25+ years of harness experience, we list every boot’s Big End (H) and Small End (J) diameters as supplied and after recovery.
A lipped straight boot has a retention lip that locks against the connector backshell groove; a non-lipped boot has a plain open large end for mid-run transitions. Match the boot by Big End (H) diameter to the backshell, and by Small End (J) diameter after recovery to the cable. If the harness must bend sharply right behind the connector, use a 90 degree heat shrink boot instead. For the full range, see all heat shrink boots.
FAQ
What is the difference between the Raychem 202A and 204W straight boots?
Both are straight lipped boots. The 202A series covers a wider range of sizes including larger H diameters; the 204W series is for micro-connector applications with a smaller H (11 mm as-supplied vs 17 mm for 202A111) and a shorter body. For Deutsch ASL, ASU and Souriau 8STA shell 6, the 204W221-25-0 is the correct fit.
How do I size a straight boot?
Measure the connector backshell outer diameter — it must be ≤ the boot’s H as-supplied — and the cable outer diameter at the exit, which must be ≤ the boot’s J after recovery. Both H and J (as supplied and after recovery) are listed on every product page.
