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PrimeLock® Nut Locking Safety Device

Innovative safety device mechanically prevents nut from rotating in high-vibration applications

Easily attaches to all PrimeLock® fittings – sizes ½" to 1 ½"
Mechanically locks the nut from rotating more than 11° from setpoint
Made from durable Polypropylene
Over-the-nut, external installation easily installs onto PrimeLock® fittings, preventing process interruptions and downtime
No special tools required, saving time and money
Single-piece, zip tie design is easy to assemble
Rings are available in natural, blue, red, green or yellow colors, providing chemical line differentiation at a glance, increasing operator safety.


Transport of sensitive equipment
High-vibration and high-temperature applications
Thermal cycle applications
High-purity, corrosive chemical handling
Semiconductor applications
- Photolithography
- Bulk chemical delivery
- Wet etch and clean
- High-temperature cleaning processes
Solar, LED, flat panel display
Low surface tension chemistries

Ordering Information

Build your own part number by selecting from the following options.

PSS - 16 - Y




Part NumberFitting SizeDimensions
PSS-81/2"41.7 mm9.9 mm
PSS-123/4"52.6 mm10.4 mm
PSS-161"62.2 mm11.7 mm
PSS-201 1/4"75.9 mm12.7 mm
PSS-241 1/2"87.6 mm13.7 mm



Material of Construction:Polypropylene
Available Sizes:1/2", 3/4", 1", 1 1/4", 1 1/2"
Available Colors:Natural, blue, green, red, yellow
Temperature:Ambientup to 49°C (120°F)
 Media (¼” –1¼” sizes)up to 200°C (392°F)
 Media (1½” size)up to 150°C (302°F)


Data Sheet

Download and view the PrimeLock® Nut Locking Safety Device Data Sheet in Adobe PDF format. You will first need to have the Adobe Acrobat Reader ActiveX control or plug-in installed on your computer.


YouTube Videos

Watch PrimeLock® videos on YouTube. Web-based version supported on most mobile phones and devices.

How to Install a PrimeLock® Nut Locking Safety Device