1/4 Pt. Pipe Dope Pipe Thread Sealant

25631 RectorSeal® No. 5 Multi-Purpose Pipe Thread Sealant – 1/4 Pint

RectorSeal® No. 5 is a professional, soft-set, slow-drying pipe thread sealant designed to seal, lubricate, and protect threaded connections across a wide range of mechanical and plumbing systems. The oleoresinous-based compound ensures a dependable seal on both metal and compatible plastic threads under variable pressure and temperature conditions. It remains flexible for system maintenance and disassembly while providing long-term protection against leaks and thread corrosion in demanding environments.

Technical Specifications

• Model: 25631
• Manufacturer: RectorSeal®
• Product Name: No. 5 Multi-Purpose Pipe Thread Sealant
• Form: Soft-Set Paste
• Base Material: Oleoresinous Compound
• Composition: Diacetone Alcohol and Oleoresinous Additives
• Color: Yellow
• Container Type: Can
• Container Size: 1/4 Pint
• Coverage: Approximately 0.37 cu-ft
• Specific Gravity: 1.38
• VOC Content: 317 g/L
• Flash Point: 150°F (65°C)
• Flammability Rating: 2 (per NFPA classification)
• Temperature Range: -40°F to 125°F (-40°C to 52°C)
• Drying Characteristics: Slow-Drying, Non-Hardening
• Pressure Rating: Suitable for immediate pressurization up to 100 PSI on pipe sizes up to 2" (for natural gas, air, and water)
• Applicable Materials: Steel, Iron, Brass, Copper, Aluminum, Stainless Steel, Polyethylene, Fiberglass Reinforced, and PVC Pipe
• Not Recommended For: ABS, CPVC, Oxygen, Chlorine, or Oxidizing Agents
• Odor: Mild
• Classification: Consumer Commodity ORM-D
• Applications: General mechanical, HVAC, gas, and plumbing threaded joints

Professional Notes

RectorSeal® No. 5 provides a non-hardening, pressure-tight seal ideal for both assembly and maintenance of threaded systems. The compound’s lubricating characteristics reduce friction during assembly, preventing galling and facilitating joint integrity under varying temperature cycles. The formulation supports reliable sealing of natural gas, potable water, air, steam, and hydraulic systems within its rated parameters. Its soft-set nature allows for joint repositioning after assembly and simplifies disassembly for future servicing without thread degradation.

Summary

The RectorSeal® No. 5 Multi-Purpose Pipe Thread Sealant (25631) delivers a professional sealing solution for threaded metal and compatible plastic pipe systems. Its oleoresinous, non-hardening composition ensures dependable joint sealing, corrosion resistance, and ease of maintenance under field conditions. Engineered for consistent performance across gas, air, and water systems, No. 5 remains a standard for professional contractors seeking proven reliability in sealing applications.