Liquid Tight Threaded Plugs
Liquid tight threaded plugs are essential sealing components designed to provide watertight and oil-resistant protection in threaded applications. These hexagonal headed plugs feature an integral sealing ring and wrench adjustable slot, manufactured from electrically non-conductive Nylon 6/6 with UL94V-2 flammability rating. Widely used across hydraulic, pneumatic, and electrical industries throughout the UK, these IP68 rated plugs offer superior sealing performance up to 70 PSI or 5 BAR pressure. The main benefit for users is their non-corrosive, chemically resistant design that provides a reliable alternative to brass or steel plugs whilst maintaining excellent temperature resistance from -40°C to 105°C. Available in multiple thread configurations including Metric (M12-M40), PG (PG7-PG36), and NPT (1/4 to 1-1/4) thread sizes to suit diverse industrial applications.
Available Materials and Style Options:
- Nylon 6/6 construction with UL94V-2 flammability rating
- Integral TPE sealing ring for liquid tight performance
- Black and grey colour options available
- Hexagonal head design with wrench/screwdriver adjustment slot
- Metric thread sizes from M12 to M40
- PG thread sizes from PG7 to PG36
- NPT thread sizes from 1/4 inch to 1-1/4 inch
- Approximate head thickness of 5.3mm across all sizes
Key Features and Benefits:
- IP68 rated liquid tight sealing protection up to 70 PSI or 5 BAR
- UL rated for NEMA 3R, 4 and 4X applications ensuring compliance
- Electrically non-conductive design prevents electrical conductivity issues
- Chemical and oil resistant properties suitable for harsh environments
- Temperature resistance from -40°C (-40°F) to 105°C (221°F)
- Corrosion resistant alternative to metallic brass or steel plugs
- Easy installation with standard hex wrench or screwdriver tools
- Integral sealing ring eliminates need for additional gaskets or sealants
Common UK Use Cases:
- Hydraulic and pneumatic system installations for sealing unused threaded ports and preventing contamination
- Electrical enclosures and control panels to seal unused conduit entries in outdoor or industrial environments
- Manufacturing and processing equipment where liquid tight sealing is required in threaded connections
- Automotive and transport applications for sealing threaded openings in engine compartments and chassis components
- Marine and offshore equipment protection where saltwater and corrosive environment resistance is essential
Related Vital Parts Products:
- Liquid Tight Threaded Vent Plugs - for applications requiring ventilation with liquid protection
- Liquid Tight Hole Plugs - comprehensive range of non-threaded sealing solutions
- Liquid Tight Blanking Plugs - TPE rubber plugs for panel hole sealing
- Liquid Tight Break Through Plugs - versatile plugs that can accommodate cable pass-through
Technical Specifications:
These plugs meet stringent quality standards with IP68 rating certification up to 70 PSI or 5 BAR pressure tolerance, UL certification for NEMA 3R, 4 and 4X applications, and comprehensive temperature resistance testing from -40°C to 105°C operating range.
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