What Is an SR-Type Sealed Cable Gland? Types and Selection Criteria
An SR-type sealed cable gland is a plastic gland with a slit seal that brings a pre-assembled cable with a plug such as RJ-45 into a panel or device housing without removing the plug.
An SR-type sealed cable gland is a plastic cable gland made with a special seal for bringing pre-assembled cables with a plug such as RJ-45 on the end into a panel or device housing with a seal. The inner opening of the gland body is large enough for the plug to pass through; the seal is slit and is fitted onto the cable from the side after the plug has passed through the body. This way, network and data cables can be brought into a panel, field box or machine without removing the plug or re-crimping the cable end.
How it differs from other solutions
| Solution | How it works | When to choose it |
|---|---|---|
| SR-type sealed gland | The plugged cable passes through the body, the slit seal wraps the cable | Where a pre-assembled plugged cable must enter a housing |
| Standard sealed gland | The seal hole matches the cable diameter, the plug does not pass | Cables whose end is terminated after mounting |
| Panel-mount RJ45 connector | A female-to-female RJ45 connector is fitted to the panel wall | When the cable should not pass through the panel and separate patch cables connect inside and outside |
Selection criteria
- Thread type: The catalogue models have PG 21 and M 25 threads; PG and metric threads do not fit each other. The mounting diameter in the product data is 25.5 mm for M 25 and 29 mm for PG 21.
- Number of cable entries: The product data give the clamping diameter as 5 mm (one entry) and 2x5 mm (two entries); SR05 and 2SR05 in the stock code show this distinction. Check the clamping diameter line on the product page before ordering.
- Cable outer diameter: The seal hole must match the cable's outer diameter. A thick cable does not seat in the hole and a thin cable leaves a gap around it; in both cases the seal fails.
- Plug size: Before installation, check that plugs with protective boots or large bodies pass through the gland body.
- Colour: Grey and black options are chosen to match the panel or device.
Common mistakes
- Passing two cables through a single-entry seal: The gap between the cables lets water and dust in; choose a two-entry model for two cables.
- Forcing a thick cable into the 5 mm hole: The seal tears or does not close fully.
- Leaving an unused entry open: On a two-entry seal, an empty hole breaks the seal.
- Connecting the cable to the housing before passing the plug through the gland: The slit seal is fitted onto the cable after the plug has passed through the body; plan the order in advance.
Related standards
- EN 62444: General and safety requirements for cable glands for electrical installations.
- DIN 40430: Dimensions of PG threads (the outer thread diameter of PG 21 is 28.3 mm).
SR-type sealed glands in the catalogue
The SR Type Sealed Type Glands category has 8 active products, all from Ortaç:
| Thread | One entry (SR05) | Two entries (2SR05) |
|---|---|---|
| PG 21 | ORG06-SR05 grey, ORB06-SR05 black | ORG06-2SR05 grey, ORB06-2SR05 black |
| M 25 | OMRG06-SR05 grey, OMRB06-SR05 black | OMRG06-2SR05 grey, OMRB06-2SR05 black |
The product name states the quantity per box (75). Pre-assembled RJ45 cables are in the Ready-Made Ethernet and Patch Cables category, and RJ45 connectors for the panel wall are in the Panel-Mount USB and RJ45 Connectors category.
Frequently asked questions
What does an SR-type gland do?
It lets a pre-assembled cable with a plug enter a panel or device housing with a seal, without cutting off and re-crimping the plug.
What is the difference between SR05 and 2SR05?
According to the product data, SR05 is a seal with one cable entry and 2SR05 a seal with two (clamping diameter 5 mm and 2x5 mm). Choose by the number of cables to pass through.
Does every network cable fit an SR-type gland?
No. The seal hole is for a specific cable diameter; measure the cable's outer diameter and compare it with the clamping diameter on the product page. Also check that the plug passes through the gland body.
Can a standard sealed gland be used instead of an SR-type gland?
Yes, if the cable end is terminated after mounting. On a pre-assembled plugged cable, the plug does not pass through the seal hole of a standard gland.