Cures Quickly to Seal Hydraulic and Pneumatic Pipes and Fittings
3M Scotch-Weld General Purpose Pipe Sealant PS65 is a one-component, anaerobic sealant that cures and seals hydraulic and pneumatic pipes and fittings. This general purpose, paste pipe sealant is slow-curing, sealing almost instantly, and withstands high temperatures and pressure. We also designed this sealant for easy disassembly, creating a strong, tough seal that can be later disassembled with ease. This sealant is formulated to resist pressure and vibration as well as lock and seal medium to coarse straight and tapered threads.
Recommended Applications
- Pressure vessels
- Air compressors
- Hydraulic and pneumatic systems
Features of a Rapid Seal
3M Scotch-Weld General Purpose Pipe Sealant PS65 provides an almost instant low-pressure seal. A high-pressure seal results when the bond is fully cured. It seals quickly to stop leaks when applied to threads or compression fittings of most metal and certain plastic pipes, without shredding, evaporation or shrinkage. In addition, this sealant prevents galling as well as helps eliminate the waste and mess of leaking hydraulic fluids, oil, fuel and lubricants.
Formulated for Speed and Strength
Offering a rapid seal that withstands heat, pressure and vibration, 3M Scotch-Weld General Purpose Pipe Sealant PS65 is an excellent solution for fast results. Resilient and durable, this pipe sealant is formulated to produce the strong seal necessary for a wide variety of demanding applications.
Understanding Anaerobic Adhesives
Anaerobic adhesives are uniquely formulated to cure in the absence of oxygen. The term “anaerobic” means “living without air” and when the oxygen is excluded, a chemical chain reaction begins that causes the adhesive to polymerize. Contact with metal speeds the polymerization process and rapidly accelerates the curing process, forming tough cross-linked plastic that provides aggressive adhesion with effective shear strength.
More commonly referred to as threadlockers, pipe sealants, retaining compounds, and gasket makers, these adhesives are often used to enhance the seal, or holding force, in the threads of joined fastener systems such as nut-and-bolt assemblies. A nut-and-bolt assembly may have as little as 15% metal-to-metal contact and even a small amount of anaerobic adhesive readily fills any air voids between the threads and then hardens to a thermoset plastic. These unique adhesives are easy-to-dispense, cure rapidly, and provide effective torque strength while resisting temperature and vibration and sealing out moisture and gasses to protect against corrosion. Anaerobic adhesives can decrease manufacturing costs, enhance equipment reliability, minimize aftermarket breakdown, and reduce warranty claims.

3M 29114, Facepiece Lens 7884, Replacement Part, 7000051872, 5 EA/Case
3M 30024, Shipping-Mate Case Sealing Adhesive, Clear, 24 fl oz Can (Net Wt 17.3 oz), 7000143197, 12/Case
3M 80510, Roloc Disc 777F, P120 YF-weight, TR, 1 in, Die R100N, 7000045622
Dynabrade 90872 2" Dia. Coarse NWN DynaBrite Locking-Type Disc, 25/pack
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
3M 20927, PSA Cloth Disc 348D, P240 X-weight, 1 in x NH, Die 100N, 7000118918
Dynabrade 79448 6" x 9" DynaBrite General Purpose Maroon Hand Pad, 20/box
Dynabrade 90874 2" Dia. Very Fine NWN DynaBrite Locking-Type Disc, 25/pack
Norton 66261014793 - 3" Medium Grade Aluminum Oxide Bear-Tex Speed-Lok High Strength Maroon TR Non-Woven Abrasive Disc, 80 Each
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
Dynabrade 90873 2" Dia. Medium NWN DynaBrite Locking-Type Disc, 25/pack
3M 41531, Scotch-Weld Epoxy Adhesive 420, Black, Part B, 5 Gallon Drum (Pail), 7000000827
3M 37006, Lens Assembly 6898/37006(AAD), Replacement Part, 7000002036, 5 EA/Case
3M 23897, Cloth Belt 777F, 60 YF-weight, 1 in x 18 in, Fabri-lok, Full-flex, 7010307894, 200 per case
3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272 
