What Is a Straight-Type Cable Gland? PG Sizes and Selection Criteria
A straight-type cable gland is a simple polyamide gland that holds the cable by compressing a seal and washer with a pressure cap, used at panel and junction box entries.
A straight-type cable gland is a simple polyamide cable gland that holds the cable by compressing the seal and washer inside the body with a pressure cap. It is used at panel, junction box and device entries to protect the cable from the edge of the hole, close the entry and hold the cable in place. The product data of the Ortaç straight-type glands in the catalog gives IP54; they are therefore meant for indoor and sheltered entries, not for entries that need high water tightness.
PG sizes and catalog models
| Size | Thread outer diameter (DIN 40430), mm | Pieces per box | SKU |
|---|---|---|---|
| PG 7 | 12.5 | 400 | `ORL11` |
| PG 9 | 15.2 | 300 | `ORL12` |
| PG 11 | 18.6 | 200 | `ORL13` |
| PG 13.5 | 20.4 | 150 | `ORL14` |
| PG 16 | 22.5 | 125 | `ORL15` |
| PG 21 | 28.3 | 75 | `ORL16` |
| PG 29 | 37.0 | 30 | `ORL17` |
| PG 36 | 47.0 | 20 | `ORL18` |
Pieces per box are taken from the product name. Check the cable outer diameter range the gland clamps on the product page.
Construction
- Connection thread: PG (DIN 40430).
- Cap: According to the product data, PA6 V2 polyamide with 30% glass fibre.
- Seal: TPV.
- Protection rating: IP54; dust-protected and protected against water splashing from any direction, not intended for water jets or immersion.
Selection criteria
- PG size: Must match the threaded hole in the enclosure or the drilled hole.
- Cable outer diameter: The cable must fall within the gland's clamping range; below the range the seal does not grip the cable, above it the cap does not close.
- Environment: A straight-type gland is enough in closed, dry areas. At entries exposed to rain, wash-down water or condensation, sealed-type glands are preferred.
- Fixing: In an unthreaded sheet-metal or plastic wall, the gland is tightened from behind with a lock nut. Check on the product page whether the nut is included; nuts are also available in the polyamide nuts category.
Common mistakes
- Mixing up PG and metric threads: Sizes with similar diameters such as PG 13.5 and M20 do not fit each other; the thread profile and pitch differ. For enclosures with metric holes see the Euro Metric Sealed Type Glands category.
- Passing more than one cable through one gland: A single-hole seal leaves a gap between two cables; the entry is not closed and the cables are not held.
- Overtightening the cap: The polyamide body and seal get damaged; tighten the cap until the cable does not slip when pulled by hand.
- Using a straight type outdoors: IP54 protects against splashing water but is not enough for outdoor entries exposed to water jets, washdown or prolonged wetting.
Brands in the catalog
All 8 active products in the Straight Type Glands category are from Ortaç: PG 7, 9, 11, 13.5, 16, 21, 29 and 36.
Frequently asked questions
What size is a PG 11 gland?
The outer diameter of the PG 11 thread is 18.6 mm according to DIN 40430. The Ortaç PG 11 straight-type gland (ORL13) comes 200 pieces per box; check the cable outer diameter it clamps on the product page.
What is the difference between a straight-type and a sealed-type gland?
Both clamp the cable with a seal. The straight-type glands in the catalog are IP54 and meant for indoor use; sealed-type glands are designed for higher water tightness. Check the IP rating of each product separately.
Does a PG 13.5 gland fit an M20 hole?
No. Although the diameters are close, PG and metric threads differ in profile and pitch; choose the gland to match the thread the hole was made for.