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.

Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Insize 7341-3S, PIN GAGE HANDLE (with 1pc handle and 7 pairs of collecting bushes), .131-.180", 6928640370588
3M 05207, Hookit Sanding Block D/F, 70MM x 127MM, 7100007814
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
3M 95307, Lead Foil Tape 421, Dark Silver, 3/4 in x 36 yd, 6.3 mil, 7000049079
Air Turbine Tools 310RSV - 1/4" Router Hand Tool Series with Brake, 25,000RPM, 33424
Dynabrade 51708 .1 hp Straight-Line Pencil Grinder, 35,000 RPM, 3/32" Collet
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
Dynabrade 95544 Gear Grease, 2.5oz. Tube
3M™ 94275, Versaflo™ Gold Coated Tinted Over-Visor with UV/IR Protection M-967N, 70071696879, 1 EA/Case
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
3M 47838, EMI Copper Foil Shielding Tape 1181, 23 in x 18 yd (58.42 cm x 16.5 m), 7000058121
3M 08017, Marine Grade Silicone Sealant, White, 3 oz Tube, 7000120479, 6/Case
3M 62605, Scotch-Weld Threadlocker TL42, Blue, 10 mL Bottle, 7100039190, 10/case
Dynabrade 95848 Dynabrade Gear Oil
3M 21762, Stikit Cloth Disc Roll 341D, 60 X-weight, 6 in x NH, Die 600Z, 7000118780
3M 76630, Roloc Disc 777F, 50 YF-weight, TR, 2 in, Die R200P, 7000045627
Dynabrade 51703 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 50,000 RPM, 1/8" Collet
3M™ 17379, Versaflo™ Length Adjusting Breathing Tube BT-30, 7100009685, 1 EA/Case
3M 82618, Rubber and Vinyl Spray Adhesive 80, Yellow, 24 fl oz Can (Net Wt 19 oz), 7000028604, 6/Case
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
3M 20227, Scotch-Seal Metal Sealant 2084, Silver, 5 oz Tube, 7000046343, 36/Case 
