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.

Call Vital Parts:

For quick quotes, same-day dispatch, custom sizes, or bulk discounts, call our sales line on 01233 713 581. Businesses can register for a Vital Parts Business Account to benefit from priority shipping, trade pricing, free product samples, credit accounts, and a dedicated account manager.