Permatex 31834 Silicone O-Ring Lubricant, 44 mL Tube
Product description
For assembling or servicing O-rings and seals, the lubricant needs to suit the materials in the joint and help reduce friction at the seating surface. Permatex 31834 is a silicone-based, semi-solid lubricant for O-rings and a range of other sealing connections. Its compatibility with common rubber and plastic materials makes it useful across automotive, plumbing and equipment maintenance tasks.
Technical overview
The silicone grease lubricates, conditions and protects O-rings, helping reduce friction and support longer service life. It also helps prevent leakage by filling imperfections in the seating surface, a practical benefit when a seal needs to sit evenly in its connection. The formula is corrosion- and chemical-resistant and is specified for temperatures from -45°C to 288°C.
Permatex lists compatibility with most types of rubber and plastic, including Nitrile, Viton, Neoprene and EPDM. The product meets MIL-S-8660C specifications. Its moderate-to-high viscosity and semi-solid form suit controlled application to sealing surfaces and components rather than use as a general-purpose fluid lubricant.
Recommended uses extend beyond O-rings to seals, pressure plugs, refrigerant lines, radiator and heater hose connections, air fittings, hydraulic cylinder seals, pump and valve connections, filtration and compressor seals, and plumbing fixtures. That range is useful when maintaining several types of sealed connections with one purpose-made silicone lubricant. For example, during a service where an O-ring or faucet cartridge is being handled, the lubricant can help reduce friction at the seal and support a better-seated connection.
Who it’s for
This lubricant is intended for people maintaining rubber or plastic O-rings and seals in automotive, hydraulic, filtration, compressor and plumbing applications. It’s a good fit if you want a silicone-based product for compatible sealing materials and need to address more than one type of connection, from hose fittings to shower heads, drains and flush valves.
When choosing between a dedicated seal lubricant and a broad-purpose grease, the key distinction is the job: Permatex 31834 is formulated for O-rings, seals and listed connection points. That makes it a focused choice for servicing sealing surfaces where reducing friction and helping prevent leakage are central to the task. Match the lubricant to the seal material and the application before use.
In the box
The package contains one 44 mL tube of Permatex Silicone O-Ring Lubricant. The tube format keeps the product in a compact container for workshop or household maintenance tasks involving O-rings, seals and connections.
Buying verdict
Choose Permatex 31834 when your maintenance job calls for a silicone lubricant designed for O-rings and compatible rubber or plastic seals. Its material compatibility, semi-solid format and broad list of recommended connection types make it a practical choice for keeping sealing work focused, whether you’re servicing a hose connection, valve or plumbing fixture.